diff --git a/HMCL/build.gradle b/HMCL/build.gradle
index 7b4412499..ce980544b 100755
--- a/HMCL/build.gradle
+++ b/HMCL/build.gradle
@@ -46,7 +46,7 @@ def buildnumber = System.getenv("TRAVIS_BUILD_NUMBER")
 if (buildnumber == null)
     buildnumber = System.getenv("BUILD_NUMBER")
 if (buildnumber == null)
-    buildnumber = "0"
+    buildnumber = "1"
     
 def versionroot = System.getenv("VERSION_ROOT")
 if (versionroot == null)
diff --git a/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/asset/IAssetsHandler.java b/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/asset/IAssetsHandler.java
index 69d71a730..2391b53d4 100755
--- a/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/asset/IAssetsHandler.java
+++ b/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/asset/IAssetsHandler.java
@@ -114,7 +114,7 @@ public abstract class IAssetsHandler {
                 try {
                     if (location.exists()) {
                         FileInputStream fis = new FileInputStream(location);
-                        String sha = DigestUtils.sha1Hex(IOUtils.getBytesFromStream(fis));
+                        String sha = DigestUtils.sha1Hex(IOUtils.readFully(fis).toByteArray());
                         IOUtils.closeQuietly(fis);
                         if (contents.get(i).geteTag().equals(sha)) {
                             ++hasDownloaded;
diff --git a/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/auth/YggdrasilAuthenticator.java b/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/auth/YggdrasilAuthenticator.java
index f9f861040..b885e7f14 100755
--- a/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/auth/YggdrasilAuthenticator.java
+++ b/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/auth/YggdrasilAuthenticator.java
@@ -24,9 +24,9 @@ import javax.swing.JOptionPane;
 import org.jackhuang.hellominecraft.util.C;
 import org.jackhuang.hellominecraft.util.ArrayUtils;
 import org.jackhuang.hellominecraft.launcher.core.auth.yggdrasil.GameProfile;
+import org.jackhuang.hellominecraft.launcher.core.auth.yggdrasil.UUIDTypeAdapter;
 import org.jackhuang.hellominecraft.launcher.core.auth.yggdrasil.PropertyMap;
 import org.jackhuang.hellominecraft.launcher.core.auth.yggdrasil.YggdrasilAuthentication;
-import org.jackhuang.hellominecraft.launcher.core.auth.yggdrasil.UUIDTypeAdapter;
 import org.jackhuang.hellominecraft.util.ui.SwingUtils;
 
 /**
diff --git a/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/auth/yggdrasil/YggdrasilAuthentication.java b/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/auth/yggdrasil/YggdrasilAuthentication.java
index 53d89b54c..081009032 100755
--- a/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/auth/yggdrasil/YggdrasilAuthentication.java
+++ b/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/auth/yggdrasil/YggdrasilAuthentication.java
@@ -140,7 +140,7 @@ public class YggdrasilAuthentication {
 
     private void loggedIn(URL url, Object input) throws AuthenticationException {
         try {
-            String jsonResult = input == null ? NetUtils.get(url) : NetUtils.post(url, GSON.toJson(input), "application/json", proxy);
+            String jsonResult = input == null ? NetUtils.get(url, proxy) : NetUtils.post(url, GSON.toJson(input), "application/json", proxy);
             Response response = (Response) GSON.fromJson(jsonResult, Response.class);
 
             if (response == null)
diff --git a/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/download/MinecraftRemoteVersions.java b/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/download/MinecraftRemoteVersions.java
index ddee725cd..2264c9c5f 100644
--- a/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/download/MinecraftRemoteVersions.java
+++ b/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/download/MinecraftRemoteVersions.java
@@ -21,7 +21,7 @@ import com.google.gson.annotations.SerializedName;
 import java.util.ArrayList;
 import org.jackhuang.hellominecraft.util.C;
 import org.jackhuang.hellominecraft.util.NetUtils;
-import org.jackhuang.hellominecraft.util.OverridableSwingWorker;
+import org.jackhuang.hellominecraft.util.AbstractSwingWorker;
 
 /**
  *
@@ -55,7 +55,7 @@ public class MinecraftRemoteVersions {
         return new RemoteVersionsTask(type);
     }
 
-    public static class RemoteVersionsTask extends OverridableSwingWorker<MinecraftRemoteVersion> {
+    public static class RemoteVersionsTask extends AbstractSwingWorker<MinecraftRemoteVersion> {
 
         DownloadType type;
 
diff --git a/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/install/forge/ForgeInstaller.java b/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/install/forge/ForgeInstaller.java
index 3c2bf240d..7ef87e25c 100755
--- a/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/install/forge/ForgeInstaller.java
+++ b/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/install/forge/ForgeInstaller.java
@@ -28,7 +28,6 @@ import org.jackhuang.hellominecraft.util.logging.HMCLog;
 import org.jackhuang.hellominecraft.launcher.core.service.IMinecraftService;
 import org.jackhuang.hellominecraft.util.tasks.Task;
 import org.jackhuang.hellominecraft.util.system.FileUtils;
-import org.jackhuang.hellominecraft.util.NetUtils;
 import org.jackhuang.hellominecraft.launcher.core.version.MinecraftLibrary;
 import org.jackhuang.hellominecraft.util.MessageBox;
 import org.jackhuang.hellominecraft.util.system.IOUtils;
@@ -55,7 +54,7 @@ public class ForgeInstaller extends Task {
 
         try (ZipFile zipFile = new ZipFile(forgeInstaller)) {
             ZipEntry entry = zipFile.getEntry("install_profile.json");
-            String content = IOUtils.getStreamContent(zipFile.getInputStream(entry));
+            String content = IOUtils.toString(zipFile.getInputStream(entry));
             InstallProfile profile = C.GSON.fromJson(content, InstallProfile.class);
             File from = new File(gameDir, "versions" + File.separator + profile.install.getMinecraft());
             if (!from.exists())
diff --git a/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/mod/ModpackManager.java b/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/mod/ModpackManager.java
index ec5c5c98e..25dcabe73 100644
--- a/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/mod/ModpackManager.java
+++ b/HMCL/src/core/java/org/jackhuang/hellominecraft/launcher/core/mod/ModpackManager.java
@@ -47,6 +47,7 @@ import org.jackhuang.hellominecraft.util.system.ZipEngine;
 import org.jackhuang.hellominecraft.util.tasks.Task;
 import org.jackhuang.hellominecraft.util.ui.WebPage;
 import org.jackhuang.hellominecraft.util.MinecraftVersionRequest;
+import org.jackhuang.hellominecraft.util.system.IOUtils;
 import org.jackhuang.hellominecraft.util.tasks.NoShownTaskException;
 
 /**
@@ -275,8 +276,7 @@ public final class ModpackManager {
             if (callback != null)
                 callback.call(zip);
         } finally {
-            if (zip != null)
-                zip.closeFile();
+            IOUtils.closeQuietly(zip);
         }
     }
 
diff --git a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/Main.java b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/Main.java
index 7dffa763a..d570d6811 100644
--- a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/Main.java
+++ b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/Main.java
@@ -160,7 +160,7 @@ public final class Main implements Runnable {
                 HMCLog.warn("Failed to set look and feel...", ex);
             }
 
-            Settings.UPDATE_CHECKER.outdated.register(IUpgrader.NOW_UPGRADER);
+            Settings.UPDATE_CHECKER.outOfDateEvent.register(IUpgrader.NOW_UPGRADER);
             Settings.UPDATE_CHECKER.process(false).reg(t -> Main.invokeUpdate()).execute();
 
             if (StrUtils.isNotBlank(Settings.getInstance().getProxyHost()) && StrUtils.isNotBlank(Settings.getInstance().getProxyPort()) && MathUtils.canParseInt(Settings.getInstance().getProxyPort())) {
diff --git a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/setting/Settings.java b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/setting/Settings.java
index e3f9c06fb..eb839b7ba 100755
--- a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/setting/Settings.java
+++ b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/setting/Settings.java
@@ -131,7 +131,7 @@ public final class Settings {
     }
 
     public static Collection<Profile> getProfilesFiltered() {
-        return CollectionUtils.map(getProfiles().values(), t -> t != null && t.getName() != null);
+        return CollectionUtils.filter(getProfiles().values(), t -> t != null && t.getName() != null);
     }
 
     public static Profile getOneProfile() {
diff --git a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/ui/GameDownloadPanel.java b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/ui/GameDownloadPanel.java
index 4c0e18790..4c09bc584 100755
--- a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/ui/GameDownloadPanel.java
+++ b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/ui/GameDownloadPanel.java
@@ -107,10 +107,14 @@ public class GameDownloadPanel extends Page {
 
     public void refreshDownloads() {
         DefaultTableModel model = SwingUtils.clearDefaultTable(lstDownloads);
+        model.addRow(new Object[] { C.i18n("message.loading"), "", "" });
         MinecraftRemoteVersions.refreshRomoteVersions(Settings.getLastProfile().service().getDownloadType())
-            .reg((ver) -> model.addRow(new Object[] { ver.id, ver.time,
-                                                      StrUtils.equalsOne(ver.type, "old_beta", "old_alpha", "release", "snapshot") ? C.i18n("versions." + ver.type) : ver.type }))
-            .regDone(lstDownloads::requestFocus).execute();
+                .reg((ver) -> model.addRow(new Object[] { ver.id, ver.time,
+            StrUtils.equalsOne(ver.type, "old_beta", "old_alpha", "release", "snapshot") ? C.i18n("versions." + ver.type) : ver.type }))
+                .regDone(() -> {
+                    lstDownloads.requestFocus();
+                    model.removeRow(0);
+                }).execute();
     }
 
     void downloadMinecraft() {
diff --git a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/ui/GameSettingsPanel.java b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/ui/GameSettingsPanel.java
index c6b154f38..966878d8a 100755
--- a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/ui/GameSettingsPanel.java
+++ b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/ui/GameSettingsPanel.java
@@ -54,7 +54,7 @@ import org.jackhuang.hellominecraft.launcher.core.version.GameDirType;
 import org.jackhuang.hellominecraft.launcher.core.version.MinecraftVersion;
 import org.jackhuang.hellominecraft.launcher.setting.VersionSetting;
 import org.jackhuang.hellominecraft.util.MessageBox;
-import org.jackhuang.hellominecraft.util.OverridableSwingWorker;
+import org.jackhuang.hellominecraft.util.AbstractSwingWorker;
 import org.jackhuang.hellominecraft.util.MinecraftVersionRequest;
 import org.jackhuang.hellominecraft.util.system.OS;
 import org.jackhuang.hellominecraft.util.StrUtils;
@@ -1276,7 +1276,7 @@ public final class GameSettingsPanel extends RepaintPage implements DropTargetLi
         }
     }
 
-    private static class OverridableSwingWorkerImpl extends OverridableSwingWorker<List<ModInfo>> {
+    private static class OverridableSwingWorkerImpl extends AbstractSwingWorker<List<ModInfo>> {
 
         @Override
         protected void work() throws Exception {
diff --git a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/ui/MainFrame.java b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/ui/MainFrame.java
index bb06d3f13..f07fd221c 100755
--- a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/ui/MainFrame.java
+++ b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/ui/MainFrame.java
@@ -348,7 +348,7 @@ public final class MainFrame extends DraggableFrame implements IRepaint {
             isShowedMessage = false;
             reloadColor(Settings.getInstance().getTheme());
             windowTitle.setText(defaultTitle);
-            windowTitle.setForeground(Settings.UPDATE_CHECKER.OUT_DATED ? Color.red : Color.white);
+            windowTitle.setForeground(Settings.UPDATE_CHECKER.isOutOfDate() ? Color.red : Color.white);
         }
     }
 
diff --git a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/ui/modpack/ModpackWizard.java b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/ui/modpack/ModpackWizard.java
index c342b1a38..dae15d2bf 100644
--- a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/ui/modpack/ModpackWizard.java
+++ b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/ui/modpack/ModpackWizard.java
@@ -114,33 +114,33 @@ public class ModpackWizard extends WizardBranchController {
                             boolean including = false;
                             if ((Boolean) settings.get(ModpackInitializationPanel.KEY_INCLUDING_LAUNCHER)) {
                                 boolean flag = true;
-                                ZipEngine engine = new ZipEngine(loc);
-                                Config s = new Config();
-                                if (!IOUtils.isAbsolutePath(Settings.getInstance().getBgpath()))
-                                    s.setBgpath(Settings.getInstance().getBgpath());
-                                s.setDownloadType(Settings.getInstance().getDownloadType());
-                                engine.putTextFile(C.GSON.toJson(s), "hmcl.json");
-                                engine.putFile(modpack, "modpack.zip");
-                                File bg = new File("bg");
-                                if (bg.isDirectory())
-                                    engine.putDirectory(bg);
-                                bg = new File("background.png");
-                                if (bg.isFile())
-                                    engine.putFile(bg, "background.png");
-                                bg = new File("background.jpg");
-                                if (bg.isFile())
-                                    engine.putFile(bg, "background.jpg");
-                                for (URL u : Utils.getURL())
-                                    try {
-                                        File f = new File(u.toURI());
-                                        if (f.getName().endsWith(".exe") || f.getName().endsWith(".jar"))
-                                            engine.putFile(f, f.getName());
-                                    } catch (IOException | URISyntaxException e) {
-                                        HMCLog.err("Failed to add launcher files.", e);
-                                        flag = false;
-                                        break;
-                                    }
-                                engine.closeFile();
+                                try (ZipEngine engine = new ZipEngine(loc)) {
+                                    Config s = new Config();
+                                    if (!IOUtils.isAbsolutePath(Settings.getInstance().getBgpath()))
+                                        s.setBgpath(Settings.getInstance().getBgpath());
+                                    s.setDownloadType(Settings.getInstance().getDownloadType());
+                                    engine.putTextFile(C.GSON.toJson(s), "hmcl.json");
+                                    engine.putFile(modpack, "modpack.zip");
+                                    File bg = new File("bg");
+                                    if (bg.isDirectory())
+                                        engine.putDirectory(bg);
+                                    bg = new File("background.png");
+                                    if (bg.isFile())
+                                        engine.putFile(bg, "background.png");
+                                    bg = new File("background.jpg");
+                                    if (bg.isFile())
+                                        engine.putFile(bg, "background.jpg");
+                                    for (URL u : Utils.getURL())
+                                        try {
+                                            File f = new File(u.toURI());
+                                            if (f.getName().endsWith(".exe") || f.getName().endsWith(".jar"))
+                                                engine.putFile(f, f.getName());
+                                        } catch (IOException | URISyntaxException e) {
+                                            HMCLog.err("Failed to add launcher files.", e);
+                                            flag = false;
+                                            break;
+                                        }
+                                }
                                 if (flag) {
                                     including = true;
                                     if (!modpack.delete())
diff --git a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/util/CrashReporter.java b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/util/CrashReporter.java
index 2861ff3c4..ad799fc2e 100755
--- a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/util/CrashReporter.java
+++ b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/util/CrashReporter.java
@@ -111,8 +111,8 @@ public class CrashReporter implements Thread.UncaughtExceptionHandler {
                 System.out.println(text);
 
             if (checkThrowable(e) && !System.getProperty("java.vm.name").contains("OpenJDK")) {
-                SwingUtilities.invokeLater(() -> LogWindow.INSTANCE.showAsCrashWindow(Settings.UPDATE_CHECKER.OUT_DATED));
-                if (!Settings.UPDATE_CHECKER.OUT_DATED)
+                SwingUtilities.invokeLater(() -> LogWindow.INSTANCE.showAsCrashWindow(Settings.UPDATE_CHECKER.isOutOfDate()));
+                if (!Settings.UPDATE_CHECKER.isOutOfDate())
                     reportToServer(text, s);
             }
         } catch (Throwable ex) {
diff --git a/HMCLaF/src/main/java/org/jackhuang/hellominecraft/lookandfeel/HelloMinecraftLookAndFeel.java b/HMCLaF/src/main/java/org/jackhuang/hellominecraft/lookandfeel/HelloMinecraftLookAndFeel.java
index cc0dd32cb..9938b79ab 100755
--- a/HMCLaF/src/main/java/org/jackhuang/hellominecraft/lookandfeel/HelloMinecraftLookAndFeel.java
+++ b/HMCLaF/src/main/java/org/jackhuang/hellominecraft/lookandfeel/HelloMinecraftLookAndFeel.java
@@ -47,7 +47,7 @@ public class HelloMinecraftLookAndFeel extends SynthLookAndFeel {
     public HelloMinecraftLookAndFeel(Map<String, String> settings) throws ParseException {
         try {
             try (InputStream is = HelloMinecraftLookAndFeel.class.getResourceAsStream("/org/jackhuang/hellominecraft/lookandfeel/synth.xml")) {
-                String s = IOUtils.getStreamContent(is, "UTF-8");
+                String s = IOUtils.toString(is, "UTF-8");
                 for (Map.Entry<String, String> ss : settings.entrySet())
                     s = s.replace("${" + ss.getKey() + "}", ss.getValue());
                 load(new ByteArrayInputStream(s.getBytes("UTF-8")), HelloMinecraftLookAndFeel.class);
diff --git a/HMCSM/src/main/java/org/jackhuang/hellominecraft/svrmgr/install/cauldron/ForgeInstaller.java b/HMCSM/src/main/java/org/jackhuang/hellominecraft/svrmgr/install/cauldron/ForgeInstaller.java
index 9776cae63..6b54d1b9e 100755
--- a/HMCSM/src/main/java/org/jackhuang/hellominecraft/svrmgr/install/cauldron/ForgeInstaller.java
+++ b/HMCSM/src/main/java/org/jackhuang/hellominecraft/svrmgr/install/cauldron/ForgeInstaller.java
@@ -66,7 +66,7 @@ public class ForgeInstaller {
 
         ZipFile zipFile = new ZipFile(forgeInstaller);
         ZipEntry entry = zipFile.getEntry("install_profile.json");
-        String content = IOUtils.getStreamContent(zipFile.getInputStream(entry));
+        String content = IOUtils.toString(zipFile.getInputStream(entry));
         InstallProfile profile = gson.fromJson(content, InstallProfile.class);
 
         HMCLog.log("Extracting cauldron server pack..." + profile.install.filePath);
@@ -122,7 +122,7 @@ public class ForgeInstaller {
             File packFile = new File(gameDir, "libraries" + File.separator + library.formatted + ".pack.xz");
             if (packFile.exists() && packFile.isFile())
                 try {
-                    unpackLibrary(lib.getParentFile(), IOUtils.getBytesFromStream(FileUtils.openInputStream(packFile)));
+                    unpackLibrary(lib.getParentFile(), IOUtils.readFully(FileUtils.openInputStream(packFile)).toByteArray());
                     if (!checksumValid(lib, Arrays.asList(library.checksums)))
                         badLibs.add(library.name);
                 } catch (IOException e) {
@@ -165,7 +165,7 @@ public class ForgeInstaller {
 
     private static boolean checksumValid(File libPath, List<String> checksums) {
         try {
-            byte[] fileData = IOUtils.getBytesFromStream(FileUtils.openInputStream(libPath));
+            byte[] fileData = IOUtils.readFully(FileUtils.openInputStream(libPath)).toByteArray();
             boolean valid = (checksums == null) || (checksums.isEmpty()) || (checksums.contains(DigestUtils.sha1Hex(fileData)));
             if ((!valid) && (libPath.getName().endsWith(".jar")))
                 valid = validateJar(libPath, fileData, checksums);
diff --git a/HMCSM/src/main/java/org/jackhuang/hellominecraft/svrmgr/setting/ServerProperties.java b/HMCSM/src/main/java/org/jackhuang/hellominecraft/svrmgr/setting/ServerProperties.java
index 73de504d2..814a3777e 100755
--- a/HMCSM/src/main/java/org/jackhuang/hellominecraft/svrmgr/setting/ServerProperties.java
+++ b/HMCSM/src/main/java/org/jackhuang/hellominecraft/svrmgr/setting/ServerProperties.java
@@ -26,6 +26,7 @@ import java.text.SimpleDateFormat;
 import java.util.Date;
 import java.util.Properties;
 import org.jackhuang.hellominecraft.util.logging.HMCLog;
+import org.jackhuang.hellominecraft.util.system.IOUtils;
 
 /**
  *
@@ -65,12 +66,7 @@ public class ServerProperties {
             HMCLog.warn("Failed to get property in server.properties", ex);
             return "";
         } finally {
-            try {
-                if (is != null)
-                    is.close();
-            } catch (IOException ex) {
-                HMCLog.warn("Failed to close InputStream for server.properties", ex);
-            }
+            IOUtils.closeQuietly(is);
         }
     }
 
@@ -98,12 +94,7 @@ public class ServerProperties {
         } catch (IOException ex) {
             HMCLog.warn("Failed to set property in server.properties", ex);
         } finally {
-            try {
-                if (is != null)
-                    is.close();
-            } catch (IOException ex) {
-                HMCLog.warn("Failed to close OutputStream for server.properties", ex);
-            }
+            IOUtils.closeQuietly(is);
         }
     }
 
diff --git a/HMCSM/src/main/java/org/jackhuang/hellominecraft/svrmgr/util/ModType.java b/HMCSM/src/main/java/org/jackhuang/hellominecraft/svrmgr/util/ModType.java
index cb809f106..96565493f 100755
--- a/HMCSM/src/main/java/org/jackhuang/hellominecraft/svrmgr/util/ModType.java
+++ b/HMCSM/src/main/java/org/jackhuang/hellominecraft/svrmgr/util/ModType.java
@@ -24,6 +24,7 @@ import java.util.logging.Logger;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipFile;
 import org.jackhuang.hellominecraft.util.C;
+import org.jackhuang.hellominecraft.util.system.IOUtils;
 
 /**
  * 判断mod类型
@@ -68,14 +69,7 @@ public class ModType {
         } catch (Exception e) {
 
         } finally {
-            try {
-                if (zipFile != null)
-                    zipFile.close();
-            } catch (IOException ex) {
-                Logger.getLogger(ModType.class.getName()).log(Level.SEVERE, null, ex);
-            } catch (Throwable t) {
-
-            }
+            IOUtils.closeQuietly(zipFile);
         }
         if (isModLoader)
             return MODLOADER_MOD;
diff --git a/HMCSM/src/main/java/org/jackhuang/hellominecraft/svrmgr/util/MonitorServiceImpl.java b/HMCSM/src/main/java/org/jackhuang/hellominecraft/svrmgr/util/MonitorServiceImpl.java
index 73cffa7a6..1ef00cb32 100755
--- a/HMCSM/src/main/java/org/jackhuang/hellominecraft/svrmgr/util/MonitorServiceImpl.java
+++ b/HMCSM/src/main/java/org/jackhuang/hellominecraft/svrmgr/util/MonitorServiceImpl.java
@@ -27,6 +27,7 @@ import java.util.StringTokenizer;
 import com.sun.management.OperatingSystemMXBean;
 import org.jackhuang.hellominecraft.util.StrUtils;
 import org.jackhuang.hellominecraft.util.logging.HMCLog;
+import org.jackhuang.hellominecraft.util.system.IOUtils;
 
 /**
  *
@@ -39,7 +40,7 @@ public class MonitorServiceImpl implements IMonitorService {
     private static final int CPUTIME = 30;
     private static final int PERCENT = 100;
     private static final int FAULTLENGTH = 10;
-    private static final String linuxVersion = null;
+    private static final String LINUX_VERSION = null;
 
     /**
      * 获得当前的监控对象.
@@ -77,7 +78,7 @@ public class MonitorServiceImpl implements IMonitorService {
         else if (osName.toLowerCase().startsWith("mac"))
             cpuRatio = this.getCpuRatioForMac();
         else
-            cpuRatio = this.getCpuRatioForLinux();
+            cpuRatio = getCpuRatioForLinux();
         // 构造返回对象
         MonitorInfoBean infoBean = new MonitorInfoBean();
         infoBean.setFreeMemory(freeMemory);
@@ -100,20 +101,22 @@ public class MonitorServiceImpl implements IMonitorService {
             String command = "cat /proc/stat";
             long startTime = System.currentTimeMillis();
             pro1 = r.exec(command);
-            BufferedReader in1 = new BufferedReader(new InputStreamReader(pro1.getInputStream()));
-            String line = null;
-            long idleCpuTime1 = 0, totalCpuTime1 = 0;   //分别为系统启动后空闲的CPU时间和总的CPU时间
-            while ((line = in1.readLine()) != null)
-                if (line.startsWith("cpu")) {
-                    line = line.trim();
-                    String[] temp = line.split("\\s+");
-                    idleCpuTime1 = Long.parseLong(temp[4]);
-                    for (String s : temp)
-                        if (!s.equals("cpu"))
-                            totalCpuTime1 += Long.parseLong(s);
-                    break;
-                }
-            in1.close();
+            String line;
+            long idleCpuTime1, totalCpuTime1;   //分别为系统启动后空闲的CPU时间和总的CPU时间
+            try (BufferedReader in1 = new BufferedReader(new InputStreamReader(pro1.getInputStream()))) {
+                idleCpuTime1 = 0;
+                totalCpuTime1 = 0; //分别为系统启动后空闲的CPU时间和总的CPU时间
+                while ((line = in1.readLine()) != null)
+                    if (line.startsWith("cpu")) {
+                        line = line.trim();
+                        String[] temp = line.split("\\s+");
+                        idleCpuTime1 = Long.parseLong(temp[4]);
+                        for (String s : temp)
+                            if (!s.equals("cpu"))
+                                totalCpuTime1 += Long.parseLong(s);
+                        break;
+                    }
+            }
             pro1.destroy();
             try {
                 Thread.sleep(100);
@@ -123,21 +126,21 @@ public class MonitorServiceImpl implements IMonitorService {
             //第二次采集CPU时间
             long endTime = System.currentTimeMillis();
             pro2 = r.exec(command);
-            BufferedReader in2 = new BufferedReader(new InputStreamReader(pro2.getInputStream()));
-            long idleCpuTime2 = 0, totalCpuTime2 = 0;   //分别为系统启动后空闲的CPU时间和总的CPU时间
-            while ((line = in2.readLine()) != null)
-                if (line.startsWith("cpu")) {
-                    line = line.trim();
-                    String[] temp = line.split("\\s+");
-                    idleCpuTime2 = Long.parseLong(temp[4]);
-                    for (String s : temp)
-                        if (!s.equals("cpu"))
-                            totalCpuTime2 += Long.parseLong(s);
-                    break;
-                }
-            if (idleCpuTime1 != 0 && totalCpuTime1 != 0 && idleCpuTime2 != 0 && totalCpuTime2 != 0)
-                cpuUsage = 1 - (float) (idleCpuTime2 - idleCpuTime1) / (float) (totalCpuTime2 - totalCpuTime1);
-            in2.close();
+            try (BufferedReader in2 = new BufferedReader(new InputStreamReader(pro2.getInputStream()))) {
+                long idleCpuTime2 = 0, totalCpuTime2 = 0;   //分别为系统启动后空闲的CPU时间和总的CPU时间
+                while ((line = in2.readLine()) != null)
+                    if (line.startsWith("cpu")) {
+                        line = line.trim();
+                        String[] temp = line.split("\\s+");
+                        idleCpuTime2 = Long.parseLong(temp[4]);
+                        for (String s : temp)
+                            if (!s.equals("cpu"))
+                                totalCpuTime2 += Long.parseLong(s);
+                        break;
+                    }
+                if (idleCpuTime1 != 0 && totalCpuTime1 != 0 && idleCpuTime2 != 0 && totalCpuTime2 != 0)
+                    cpuUsage = 1 - (float) (idleCpuTime2 - idleCpuTime1) / (float) (totalCpuTime2 - totalCpuTime1);
+            }
             pro2.destroy();
         } catch (IOException e) {
             HMCLog.err("Failed to catch sysout", e);
@@ -174,21 +177,9 @@ public class MonitorServiceImpl implements IMonitorService {
             System.out.println(ioe.getMessage());
             return 1;
         } finally {
-            freeResource(is, isr, brStat);
-        }
-    }
-
-    private static void freeResource(InputStream is, InputStreamReader isr,
-                                     BufferedReader br) {
-        try {
-            if (is != null)
-                is.close();
-            if (isr != null)
-                isr.close();
-            if (br != null)
-                br.close();
-        } catch (IOException ioe) {
-            System.out.println(ioe.getMessage());
+            IOUtils.closeQuietly(is);
+            IOUtils.closeQuietly(isr);
+            IOUtils.closeQuietly(brStat);
         }
     }
 
@@ -217,6 +208,14 @@ public class MonitorServiceImpl implements IMonitorService {
             return 0.0;
         }
     }
+    
+    public static String substring(String src, int start_idx, int end_idx) {
+        byte[] b = src.getBytes();
+        String tgt = "";
+        for (int i = start_idx; i <= end_idx; i++)
+            tgt += (char) b[i];
+        return tgt;
+    }
 
     /**
      * 读取CPU信息.
@@ -250,12 +249,12 @@ public class MonitorServiceImpl implements IMonitorService {
                     continue;
                 // 字段出现顺序：Caption,CommandLine,KernelModeTime,ReadOperationCount,
                 // ThreadCount,UserModeTime,WriteOperation
-                String caption = StrUtils.substring(line, capidx, cmdidx - 1).trim();
-                String cmd = StrUtils.substring(line, cmdidx, kmtidx - 1).trim();
+                String caption = substring(line, capidx, cmdidx - 1).trim();
+                String cmd = substring(line, cmdidx, kmtidx - 1).trim();
                 if (cmd.contains("wmic.exe"))
                     continue;
-                String s1 = StrUtils.substring(line, kmtidx, rocidx - 1).trim();
-                String s2 = StrUtils.substring(line, umtidx, wocidx - 1).trim();
+                String s1 = substring(line, kmtidx, rocidx - 1).trim();
+                String s2 = substring(line, umtidx, wocidx - 1).trim();
                 if (caption.equals("System Idle Process") || caption.equals("System")) {
                     if (s1.length() > 0)
                         idletime += Long.parseLong(s1);
@@ -274,11 +273,7 @@ public class MonitorServiceImpl implements IMonitorService {
         } catch (IOException | NumberFormatException ex) {
             ex.printStackTrace();
         } finally {
-            try {
-                proc.getInputStream().close();
-            } catch (Exception e) {
-                e.printStackTrace();
-            }
+            IOUtils.closeQuietly(proc.getInputStream());
         }
         return null;
     }
diff --git a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/OverridableSwingWorker.java b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/AbstractSwingWorker.java
similarity index 91%
rename from HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/OverridableSwingWorker.java
rename to HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/AbstractSwingWorker.java
index 11852942d..666a0b6ce 100644
--- a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/OverridableSwingWorker.java
+++ b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/AbstractSwingWorker.java
@@ -28,7 +28,7 @@ import org.jackhuang.hellominecraft.util.func.Consumer;
  *
  * @author huangyuhui
  */
-public abstract class OverridableSwingWorker<T> extends SwingWorker<Void, T> {
+public abstract class AbstractSwingWorker<T> extends SwingWorker<Void, T> {
 
     List<Consumer<T>> processListeners = new ArrayList<>();
     List<Runnable> doneListeners = new ArrayList<>();
@@ -47,13 +47,13 @@ public abstract class OverridableSwingWorker<T> extends SwingWorker<Void, T> {
         return null;
     }
 
-    public OverridableSwingWorker reg(Consumer<T> c) {
+    public AbstractSwingWorker reg(Consumer<T> c) {
         Objects.requireNonNull(c);
         processListeners.add(c);
         return this;
     }
 
-    public OverridableSwingWorker regDone(Runnable c) {
+    public AbstractSwingWorker regDone(Runnable c) {
         Objects.requireNonNull(c);
         doneListeners.add(c);
         return this;
diff --git a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/CollectionUtils.java b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/CollectionUtils.java
index 29a4ecb59..cbd840607 100755
--- a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/CollectionUtils.java
+++ b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/CollectionUtils.java
@@ -31,7 +31,7 @@ public final class CollectionUtils {
     private CollectionUtils() {
     }
 
-    public static <T> ArrayList<T> map(Collection<T> coll, Predicate<T> p) {
+    public static <T> ArrayList<T> filter(Collection<T> coll, Predicate<T> p) {
         ArrayList<T> newColl = new ArrayList<>();
         for (T t : coll)
             if (p.apply(t))
diff --git a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/DoubleOutputStream.java b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/DoubleOutputStream.java
index e11fd4033..c4d21d472 100755
--- a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/DoubleOutputStream.java
+++ b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/DoubleOutputStream.java
@@ -26,47 +26,47 @@ import java.io.OutputStream;
  */
 public class DoubleOutputStream extends OutputStream {
 
-    private OutputStream a = null;
-    private OutputStream b = null;
-    private boolean c = true;
+    private OutputStream os1 = null;
+    private OutputStream os2 = null;
+    private boolean autoFlush = true;
 
-    public DoubleOutputStream(OutputStream paramOutputStream1, OutputStream paramOutputStream2) {
-        this(paramOutputStream1, paramOutputStream2, true);
+    public DoubleOutputStream(OutputStream os1, OutputStream os2) {
+        this(os1, os2, true);
     }
 
-    private DoubleOutputStream(OutputStream paramOutputStream1, OutputStream paramOutputStream2, boolean paramBoolean) {
-        this.a = paramOutputStream1;
-        this.b = paramOutputStream2;
-        this.c = true;
+    private DoubleOutputStream(OutputStream os1, OutputStream os2, boolean autoFlush) {
+        this.os1 = os1;
+        this.os2 = os2;
+        this.autoFlush = autoFlush;
     }
 
     @Override
     public final void write(byte[] arr, int off, int len) throws IOException {
-        if (this.a != null)
-            this.a.write(arr, off, len);
-        if (this.b != null)
-            this.b.write(arr, off, len);
-        if (this.c)
+        if (this.os1 != null)
+            this.os1.write(arr, off, len);
+        if (this.os2 != null)
+            this.os2.write(arr, off, len);
+        if (this.autoFlush)
             flush();
     }
 
     @Override
     public final void write(byte[] arr) throws IOException {
-        if (this.a != null)
-            this.a.write(arr);
-        if (this.b != null)
-            this.b.write(arr);
-        if (this.c)
+        if (this.os1 != null)
+            this.os1.write(arr);
+        if (this.os2 != null)
+            this.os2.write(arr);
+        if (this.autoFlush)
             flush();
     }
 
     @Override
     public final void write(int i) throws IOException {
-        if (this.a != null)
-            this.a.write(i);
-        if (this.b != null)
-            this.b.write(i);
-        if (this.c)
+        if (this.os1 != null)
+            this.os1.write(i);
+        if (this.os2 != null)
+            this.os2.write(i);
+        if (this.autoFlush)
             flush();
     }
 
@@ -74,17 +74,17 @@ public class DoubleOutputStream extends OutputStream {
     public final void close() throws IOException {
         flush();
 
-        if (this.a != null)
-            this.a.close();
-        if (this.b != null)
-            this.b.close();
+        if (this.os1 != null)
+            this.os1.close();
+        if (this.os2 != null)
+            this.os2.close();
     }
 
     @Override
     public final void flush() throws IOException {
-        if (this.a != null)
-            this.a.flush();
-        if (this.b != null)
-            this.b.flush();
+        if (this.os1 != null)
+            this.os1.flush();
+        if (this.os2 != null)
+            this.os2.flush();
     }
 }
diff --git a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/IUpdateChecker.java b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/IUpdateChecker.java
index 9a589ca0d..1bedf7225 100755
--- a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/IUpdateChecker.java
+++ b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/IUpdateChecker.java
@@ -49,13 +49,13 @@ public interface IUpdateChecker {
      *
      * @return the process observable.
      */
-    OverridableSwingWorker<VersionNumber> process(boolean showMessage);
+    AbstractSwingWorker<VersionNumber> process(boolean showMessage);
 
     /**
      * Get the download links.
      *
      * @return a JSON, which contains the server response.
      */
-    OverridableSwingWorker<Map<String, String>> requestDownloadLink();
+    AbstractSwingWorker<Map<String, String>> requestDownloadLink();
 
 }
diff --git a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/MinecraftVersionRequest.java b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/MinecraftVersionRequest.java
index c353aef84..259e3770e 100755
--- a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/MinecraftVersionRequest.java
+++ b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/MinecraftVersionRequest.java
@@ -68,7 +68,7 @@ public class MinecraftVersionRequest implements Serializable {
 
     private static MinecraftVersionRequest getVersionOfOldMinecraft(ZipFile file, ZipEntry entry) throws IOException {
         MinecraftVersionRequest r = new MinecraftVersionRequest();
-        byte[] tmp = IOUtils.getBytesFromStream(file.getInputStream(entry));
+        byte[] tmp = IOUtils.readFully(file.getInputStream(entry)).toByteArray();
 
         byte[] bytes = "Minecraft Minecraft ".getBytes("ASCII");
         int j = ArrayUtils.matchArray(tmp, bytes);
@@ -92,7 +92,7 @@ public class MinecraftVersionRequest implements Serializable {
 
     private static MinecraftVersionRequest getVersionOfNewMinecraft(ZipFile file, ZipEntry entry) throws IOException {
         MinecraftVersionRequest r = new MinecraftVersionRequest();
-        byte[] tmp = IOUtils.getBytesFromStream(file.getInputStream(entry));
+        byte[] tmp = IOUtils.readFully(file.getInputStream(entry)).toByteArray();
 
         byte[] str = "-server.txt".getBytes("ASCII");
         int j = ArrayUtils.matchArray(tmp, str);
@@ -175,12 +175,7 @@ public class MinecraftVersionRequest implements Serializable {
             r.type = MinecraftVersionRequest.INVALID_JAR;
             return r;
         } finally {
-            if (f != null)
-                try {
-                    f.close();
-                } catch (IOException ex) {
-                    HMCLog.warn("Failed to close zip file", ex);
-                }
+            IOUtils.closeQuietly(f);
         }
     }
 }
diff --git a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/NetUtils.java b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/NetUtils.java
index 8839fbebf..48950e98a 100755
--- a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/NetUtils.java
+++ b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/NetUtils.java
@@ -26,6 +26,7 @@ import java.net.MalformedURLException;
 import java.net.Proxy;
 import java.net.URL;
 import java.util.Map;
+import org.jackhuang.hellominecraft.util.code.Charsets;
 import org.jackhuang.hellominecraft.util.system.IOUtils;
 
 /**
@@ -33,12 +34,22 @@ import org.jackhuang.hellominecraft.util.system.IOUtils;
  * @author huang
  */
 public final class NetUtils {
-    
+
     private NetUtils() {
     }
 
+    private static HttpURLConnection createConnection(URL url, Proxy proxy) throws IOException {
+        HttpURLConnection con = (HttpURLConnection) url.openConnection(proxy);
+        con.setDoOutput(true);
+        con.setDoInput(true);
+        con.setUseCaches(false);
+        con.setConnectTimeout(15000);
+        con.setReadTimeout(15000);
+        return con;
+    }
+
     public static String get(String url, String encoding) throws IOException {
-        return IOUtils.getStreamContent(new URL(url).openConnection().getInputStream());
+        return IOUtils.toString(new URL(url).openConnection().getInputStream());
     }
 
     public static String get(String url) throws IOException {
@@ -50,7 +61,7 @@ public final class NetUtils {
     }
 
     public static String get(URL url, Proxy proxy) throws IOException {
-        return IOUtils.getStreamContent(url.openConnection(proxy).getInputStream());
+        return readData(createConnection(url, proxy));
     }
 
     public static String post(URL u, Map<String, String> params) throws IOException {
@@ -72,17 +83,13 @@ public final class NetUtils {
     }
 
     public static String post(URL u, String post, String contentType, Proxy proxy) throws IOException {
-        HttpURLConnection con = (HttpURLConnection) u.openConnection(proxy);
+        byte[] bytes = post.getBytes(Charsets.UTF_8);
+
+        HttpURLConnection con = createConnection(u, proxy);
         con.setRequestMethod("POST");
         con.setDoOutput(true);
-        con.setDoInput(true);
-        con.setUseCaches(false);
-        con.setConnectTimeout(30000);
-        con.setReadTimeout(30000);
         con.setRequestProperty("Content-Type", contentType + "; charset=utf-8");
-        byte[] bytes = post.getBytes(IOUtils.DEFAULT_CHARSET);
         con.setRequestProperty("Content-Length", "" + bytes.length);
-        con.connect();
         OutputStream os = null;
         try {
             os = con.getOutputStream();
@@ -90,20 +97,23 @@ public final class NetUtils {
         } finally {
             IOUtils.closeQuietly(os);
         }
+        return readData(con);
+    }
 
-        String result;
+    private static String readData(HttpURLConnection con) throws IOException {
         InputStream is = null;
         try {
             is = con.getInputStream();
-            result = IOUtils.getStreamContent(is);
-        } catch (IOException ex) {
+            return IOUtils.toString(is, Charsets.UTF_8);
+        } catch (IOException e) {
             IOUtils.closeQuietly(is);
             is = con.getErrorStream();
-            result = IOUtils.getStreamContent(is);
+            if (is != null)
+                return IOUtils.toString(is, Charsets.UTF_8);
+            throw e;
+        } finally {
+            IOUtils.closeQuietly(is);
         }
-
-        con.disconnect();
-        return result;
     }
 
     public static URL constantURL(String url) {
@@ -117,9 +127,7 @@ public final class NetUtils {
 
     public static URL concatenateURL(URL url, String query) {
         try {
-            if (url.getQuery() != null && url.getQuery().length() > 0)
-                return new URL(url.getProtocol(), url.getHost(), url.getPort(), url.getFile() + "&" + query);
-            return new URL(url.getProtocol(), url.getHost(), url.getPort(), url.getFile() + "?" + query);
+            return new URL(url.getProtocol(), url.getHost(), url.getPort(), url.getFile() + (url.getQuery() != null && url.getQuery().length() > 0 ? '&' : '?') + query);
         } catch (MalformedURLException ex) {
             throw new IllegalArgumentException("Could not concatenate given URL with GET arguments!", ex);
         }
diff --git a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/StrUtils.java b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/StrUtils.java
index d18dede06..d5cbd42fe 100755
--- a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/StrUtils.java
+++ b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/StrUtils.java
@@ -37,14 +37,6 @@ public final class StrUtils {
     private StrUtils() {
     }
 
-    public static String substring(String src, int start_idx, int end_idx) {
-        byte[] b = src.getBytes();
-        String tgt = "";
-        for (int i = start_idx; i <= end_idx; i++)
-            tgt += (char) b[i];
-        return tgt;
-    }
-
     public static String makeCommand(List<String> cmd) {
         StringBuilder cmdbuf = new StringBuilder(120);
         for (int i = 0; i < cmd.size(); i++) {
@@ -189,7 +181,7 @@ public final class StrUtils {
 
     public static boolean equals(String base, String to) {
         if (base == null)
-            return (to == null);
+            return to == null;
         else
             return base.equals(to);
     }
@@ -220,15 +212,6 @@ public final class StrUtils {
         return (String[]) localArrayList.toArray(new String[localArrayList.size()]);
     }
 
-    public static String trimExtension(String filename) {
-        if ((filename != null) && (filename.length() > 0)) {
-            int i = filename.lastIndexOf('.');
-            if ((i > -1) && (i < (filename.length())))
-                return filename.substring(0, i);
-        }
-        return filename;
-    }
-
     public static boolean isBlank(String s) {
         return s == null || s.trim().length() <= 0;
     }
diff --git a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/UpdateChecker.java b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/UpdateChecker.java
index 77bb1ce1b..f30e2cedc 100755
--- a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/UpdateChecker.java
+++ b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/UpdateChecker.java
@@ -28,7 +28,7 @@ import java.util.Map;
  */
 public final class UpdateChecker implements IUpdateChecker {
 
-    public boolean OUT_DATED = false;
+    private volatile boolean outOfDate = false;
     public VersionNumber base;
     public String versionString;
     public String type;
@@ -41,9 +41,13 @@ public final class UpdateChecker implements IUpdateChecker {
 
     VersionNumber value;
 
+    public boolean isOutOfDate() {
+        return outOfDate;
+    }
+
     @Override
-    public OverridableSwingWorker<VersionNumber> process(final boolean showMessage) {
-        return new OverridableSwingWorker() {
+    public AbstractSwingWorker<VersionNumber> process(final boolean showMessage) {
+        return new AbstractSwingWorker() {
             @Override
             protected void work() throws Exception {
                 if (value == null) {
@@ -56,8 +60,8 @@ public final class UpdateChecker implements IUpdateChecker {
                     if (showMessage)
                         MessageBox.show(C.i18n("update.failed"));
                 } else if (VersionNumber.isOlder(base, value))
-                    OUT_DATED = true;
-                if (OUT_DATED)
+                    outOfDate = true;
+                if (outOfDate)
                     publish(value);
             }
         };
@@ -69,8 +73,8 @@ public final class UpdateChecker implements IUpdateChecker {
     }
 
     @Override
-    public synchronized OverridableSwingWorker<Map<String, String>> requestDownloadLink() {
-        return new OverridableSwingWorker() {
+    public synchronized AbstractSwingWorker<Map<String, String>> requestDownloadLink() {
+        return new AbstractSwingWorker() {
             @Override
             protected void work() throws Exception {
                 if (download_link == null)
@@ -84,11 +88,11 @@ public final class UpdateChecker implements IUpdateChecker {
         };
     }
 
-    public final EventHandler<VersionNumber> outdated = new EventHandler<>(this);
+    public final EventHandler<VersionNumber> outOfDateEvent = new EventHandler<>(this);
 
     @Override
     public void checkOutdate() {
-        if (OUT_DATED)
-            outdated.execute(getNewVersion());
+        if (outOfDate)
+            outOfDateEvent.execute(getNewVersion());
     }
 }
diff --git a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/lang/Localization.java b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/lang/Localization.java
index a90ee4329..931308d5c 100644
--- a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/lang/Localization.java
+++ b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/lang/Localization.java
@@ -36,13 +36,17 @@ public final class Localization {
     private static final Map<Locale, Localization> INSTANCE = new HashMap<>();
 
     private final Map<String, String> lang;
+    
+    private static InputStream getStream(String id) {
+        return Localization.class.getResourceAsStream(String.format(ROOT_LOCATION, id));
+    }
 
     private Localization(Locale locale) {
-        InputStream is = Localization.class.getResourceAsStream(String.format(ROOT_LOCATION, "_" + locale.getLanguage() + "_" + locale.getCountry()));
+        InputStream is = getStream("_" + locale.getLanguage() + "_" + locale.getCountry());
         if (is == null)
-            is = Localization.class.getResourceAsStream(String.format(ROOT_LOCATION, "_" + locale.getLanguage()));
+            is = getStream("_" + locale.getLanguage());
         if (is == null)
-            is = Localization.class.getResourceAsStream(String.format(ROOT_LOCATION, ""));
+            is = getStream("");
         if (is == null)
             throw new RuntimeException("LANG FILE MISSING");
 
diff --git a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/system/FileUtils.java b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/system/FileUtils.java
index feb9ece60..82737d591 100755
--- a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/system/FileUtils.java
+++ b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/system/FileUtils.java
@@ -195,12 +195,12 @@ public final class FileUtils {
 
     public static String read(File file)
         throws IOException {
-        return IOUtils.getStreamContent(IOUtils.openInputStream(file));
+        return IOUtils.toString(IOUtils.openInputStream(file));
     }
 
     public static String readQuietly(File file) {
         try {
-            return IOUtils.getStreamContent(IOUtils.openInputStream(file));
+            return IOUtils.toString(IOUtils.openInputStream(file));
         } catch (IOException ex) {
             HMCLog.err("Failed to read file: " + file, ex);
             return null;
@@ -209,12 +209,12 @@ public final class FileUtils {
 
     public static String read(File file, String charset)
         throws IOException {
-        return IOUtils.getStreamContent(IOUtils.openInputStream(file), charset);
+        return IOUtils.toString(IOUtils.openInputStream(file), charset);
     }
 
     public static String readIgnoreFileNotFound(File file) throws IOException {
         try {
-            return IOUtils.getStreamContent(IOUtils.openInputStream(file));
+            return IOUtils.toString(IOUtils.openInputStream(file));
         } catch (FileNotFoundException ex) {
             return "";
         }
@@ -263,14 +263,6 @@ public final class FileUtils {
         return Math.max(lastUnixPos, lastWindowsPos);
     }
 
-    public static int indexOfExtension(String filename) {
-        if (filename == null)
-            return -1;
-        int extensionPos = filename.lastIndexOf(46);
-        int lastSeparator = indexOfLastSeparator(filename);
-        return lastSeparator > extensionPos ? -1 : extensionPos;
-    }
-
     public static String getName(String filename) {
         if (filename == null)
             return null;
@@ -289,6 +281,14 @@ public final class FileUtils {
         return removeExtension(getName(filename));
     }
 
+    public static int indexOfExtension(String filename) {
+        if (filename == null)
+            return -1;
+        int extensionPos = filename.lastIndexOf(46);
+        int lastSeparator = indexOfLastSeparator(filename);
+        return lastSeparator > extensionPos ? -1 : extensionPos;
+    }
+
     public static String getExtension(String filename) {
         if (filename == null)
             return null;
@@ -333,7 +333,6 @@ public final class FileUtils {
         try {
             out = openOutputStream(file, append);
             IOUtils.write(data, out, encoding);
-            out.close();
         } finally {
             IOUtils.closeQuietly(out);
         }
diff --git a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/system/IOUtils.java b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/system/IOUtils.java
index 9beb0b247..37e557c8c 100755
--- a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/system/IOUtils.java
+++ b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/system/IOUtils.java
@@ -202,6 +202,22 @@ public final class IOUtils {
 
         return entryBuffer;
     }
+    
+    public static byte[] toByteArray(InputStream stream) throws IOException {
+        return readFully(stream).toByteArray();
+    }
+    
+    public static String toString(InputStream is) throws IOException {
+        return readFully(is).toString();
+    }
+    
+    public static String toString(InputStream is, String charset) throws IOException {
+        return readFully(is).toString(charset);
+    }
+    
+    public static String toString(InputStream is, Charset charset) throws IOException {
+        return readFully(is).toString(charset.name());
+    }
 
     public static void closeQuietly(Closeable closeable) {
         try {
@@ -302,31 +318,6 @@ public final class IOUtils {
             output.write(buf, 0, length);
     }
 
-    public static byte[] getBytesFromStream(InputStream is) throws IOException {
-        ByteArrayOutputStream out = new ByteArrayOutputStream();
-        IOUtils.copyStream(is, out);
-        is.close();
-        return out.toByteArray();
-    }
-
-    public static String getStreamContent(InputStream is) throws IOException {
-        return getStreamContent(is, DEFAULT_CHARSET);
-    }
-
-    public static String getStreamContent(InputStream is, String encoding)
-            throws IOException {
-        if (is == null)
-            return null;
-        StringBuilder sb = new StringBuilder();
-        try (InputStreamReader br = new InputStreamReader(is, encoding)) {
-            int len;
-            char[] buf = new char[16384];
-            while ((len = br.read(buf)) != -1)
-                sb.append(buf, 0, len);
-        }
-        return sb.toString();
-    }
-
     public static final String DEFAULT_CHARSET = "UTF-8";
 
     public static PrintStream createPrintStream(OutputStream out, Charset charset) {
diff --git a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/system/JavaProcessMonitor.java b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/system/JavaProcessMonitor.java
index d61a62bef..757e6af83 100755
--- a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/system/JavaProcessMonitor.java
+++ b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/system/JavaProcessMonitor.java
@@ -78,9 +78,8 @@ public class JavaProcessMonitor {
         al.add(a);
     }
 
-    void processThreadStopped(ProcessThread t, boolean forceTermintate) {
-        al.remove(t);
-        al.removeAll(CollectionUtils.map(al, t1 -> !t1.isAlive()));
+    void processThreadStopped(ProcessThread t1, boolean forceTermintate) {
+        CollectionUtils.removeIf(al, t -> t == t1 || !t.isAlive());
         if (al.isEmpty() || forceTermintate) {
             for (Thread a : al)
                 a.interrupt();
diff --git a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/system/ProcessThread.java b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/system/ProcessThread.java
index e3650ed02..9b382c95d 100755
--- a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/system/ProcessThread.java
+++ b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/system/ProcessThread.java
@@ -17,6 +17,7 @@
  */
 package org.jackhuang.hellominecraft.util.system;
 
+import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
@@ -46,35 +47,29 @@ public class ProcessThread extends Thread {
     @Override
     public void run() {
         setName("ProcessMonitor");
-        InputStreamReader br = null;
+        BufferedReader br = null;
         try {
             InputStream in = p.getRawProcess().getInputStream();
             try {
-                br = new InputStreamReader(in, System.getProperty("sun.jnu.encoding", "UTF-8"));
+                br = new BufferedReader(new InputStreamReader(in, System.getProperty("sun.jnu.encoding", "UTF-8")));
             } catch (UnsupportedEncodingException ex) {
                 HMCLog.warn("Unsupported encoding: " + System.getProperty("sun.jnu.encoding", "UTF-8"), ex);
-                br = new InputStreamReader(in);
+                br = new BufferedReader(new InputStreamReader(in));
             }
 
             int ch;
             String line = "";
             while (p.isRunning())
-                while ((ch = br.read()) != -1)
-                    if (ch == '\n') {
-                        printlnEvent.execute(line);
-                        System.out.println("Minecraft: " + line);
-                        p.getStdOutLines().add(line);
-                        line = "";
-                    } else
-                        line += (char) ch;
-            while ((ch = br.read()) != -1)
-                if (ch == '\n') {
+                while ((line = br.readLine()) != null) {
                     printlnEvent.execute(line);
                     System.out.println("Minecraft: " + line);
                     p.getStdOutLines().add(line);
-                    line = "";
-                } else
-                    line += (char) ch;
+                }
+            while ((line = br.readLine()) != null) {
+                printlnEvent.execute(line);
+                System.out.println("Minecraft: " + line);
+                p.getStdOutLines().add(line);
+            }
             stopEvent.execute(p);
         } catch (IOException e) {
             HMCLog.err("An error occured when reading process stdout/stderr.", e);
diff --git a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/system/ZipEngine.java b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/system/ZipEngine.java
index e3939018d..686a3812c 100644
--- a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/system/ZipEngine.java
+++ b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/system/ZipEngine.java
@@ -19,6 +19,7 @@ package org.jackhuang.hellominecraft.util.system;
 
 import java.io.BufferedOutputStream;
 import java.io.ByteArrayInputStream;
+import java.io.Closeable;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
@@ -34,7 +35,7 @@ import org.jackhuang.hellominecraft.util.func.BiFunction;
  *
  * @author huangyuhui
  */
-public class ZipEngine {
+public class ZipEngine implements Closeable {
 
     byte[] buf = new byte[1024];
     ZipOutputStream zos;
@@ -44,7 +45,8 @@ public class ZipEngine {
         zos = new ZipOutputStream(new BufferedOutputStream(os));
     }
 
-    public void closeFile() throws IOException {
+    @Override
+    public void close() throws IOException {
         zos.closeEntry();
         zos.close();
     }
diff --git a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/tasks/DoubleTask.java b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/tasks/DoubleTask.java
index 04af5b1ba..d88b06824 100755
--- a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/tasks/DoubleTask.java
+++ b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/tasks/DoubleTask.java
@@ -36,6 +36,7 @@ public class DoubleTask extends TaskInfo {
         super(info);
         this.a = a;
         this.b = b;
+        hidden = true;
     }
 
     @Override
diff --git a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/tasks/ParallelTask.java b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/tasks/ParallelTask.java
index ab0cac55d..7eeb4f80d 100755
--- a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/tasks/ParallelTask.java
+++ b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/tasks/ParallelTask.java
@@ -28,6 +28,10 @@ public class ParallelTask extends Task {
 
     Collection<Task> dependsTask = new HashSet<>();
 
+    public ParallelTask() {
+        hidden = true;
+    }
+
     @Override
     public void executeTask(boolean areDependTasksSucceeded) {
     }
diff --git a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/tasks/Task.java b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/tasks/Task.java
index 98dbe2ba2..a4a922b2b 100755
--- a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/tasks/Task.java
+++ b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/tasks/Task.java
@@ -50,6 +50,12 @@ public abstract class Task {
     public boolean isAborted() {
         return aborted;
     }
+    
+    protected boolean hidden = false;
+    
+    public boolean isHidden() {
+        return hidden;
+    }
 
     public Throwable getFailReason() {
         return failReason;
diff --git a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/tasks/TaskWindow.java b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/tasks/TaskWindow.java
index e1a635d4a..4ebc7ca50 100755
--- a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/tasks/TaskWindow.java
+++ b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/tasks/TaskWindow.java
@@ -218,7 +218,7 @@ public class TaskWindow extends javax.swing.JDialog
 
     @Override
     public void onDoing(Task task, Collection<Task> taskCollection) {
-        if (task == null)
+        if (task == null || task.isHidden())
             return;
         task.setProgressProviderListener(this);
 
@@ -238,8 +238,10 @@ public class TaskWindow extends javax.swing.JDialog
 
     @Override
     public void onDone(Task task, Collection<Task> taskCollection) {
+        if (task == null || task.isHidden())
+            return;
         SwingUtilities.invokeLater(() -> {
-            if (taskList == null || task == null)
+            if (taskList == null)
                 return;
             pgsTotal.setMaximum(taskList.taskCount());
             pgsTotal.setValue(pgsTotal.getValue() + 1);
@@ -254,8 +256,10 @@ public class TaskWindow extends javax.swing.JDialog
 
     @Override
     public void onFailed(Task task) {
+        if (task == null || task.isHidden())
+            return;
         SwingUtilities.invokeLater(() -> {
-            if (taskList == null || task == null)
+            if (taskList == null)
                 return;
             String msg = null;
             if (task.getFailReason() != null && !(task.getFailReason() instanceof NoShownTaskException))
@@ -283,13 +287,14 @@ public class TaskWindow extends javax.swing.JDialog
 
     @Override
     public void setStatus(Task task, String sta) {
+        if (task == null || task.isHidden())
+            return;
         SwingUtilities.invokeLater(() -> {
-            if (taskList == null || task == null)
+            if (taskList == null)
                 return;
             int idx = tasks.indexOf(task);
-            if (idx == -1)
-                return;
-            SwingUtils.setValueAt(lstDownload, task.getInfo() + ": " + sta, idx, 0);
+            if (idx != -1)
+                SwingUtils.setValueAt(lstDownload, task.getInfo() + ": " + sta, idx, 0);
         });
     }
 
diff --git a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/tasks/download/FileDownloadTask.java b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/tasks/download/FileDownloadTask.java
index cfb2f9906..99dd67614 100755
--- a/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/tasks/download/FileDownloadTask.java
+++ b/HMCUtils/src/main/java/org/jackhuang/hellominecraft/util/tasks/download/FileDownloadTask.java
@@ -92,23 +92,10 @@ public class FileDownloadTask extends Task implements PreviousResult<File>, Prev
     boolean shouldContinue = true;
 
     private void closeFiles() {
-        // Close file.
-        if (file != null)
-            try {
-                file.close();
-                file = null;
-            } catch (IOException e) {
-                HMCLog.warn("Failed to close file", e);
-            }
-
-        // Close connection to server.
-        if (stream != null)
-            try {
-                stream.close();
-                stream = null;
-            } catch (IOException e) {
-                HMCLog.warn("Failed to close stream", e);
-            }
+        IOUtils.closeQuietly(file);
+        file = null;
+        IOUtils.closeQuietly(stream);
+        stream = null;
     }
 
     // Download file.
diff --git a/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N.lang b/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N.lang
index f12938165..f87aaf988 100755
--- a/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N.lang
+++ b/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N.lang
@@ -187,6 +187,7 @@ message.error=错误
 message.cannot_open_explorer=无法打开文件管理器: 
 message.cancelled=已取消
 message.info=提示
+message.loading=加载中...
 
 folder.game=游戏文件夹
 folder.mod=MOD文件夹
diff --git a/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N.properties b/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N.properties
index 73f5b0458..a099179f4 100755
--- a/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N.properties
+++ b/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N.properties
@@ -187,6 +187,7 @@ message.error=\u9519\u8bef
 message.cannot_open_explorer=\u65e0\u6cd5\u6253\u5f00\u6587\u4ef6\u7ba1\u7406\u5668: 
 message.cancelled=\u5df2\u53d6\u6d88
 message.info=\u63d0\u793a
+message.loading=\u52a0\u8f7d\u4e2d...
 
 folder.game=\u6e38\u620f\u6587\u4ef6\u5939
 folder.mod=MOD\u6587\u4ef6\u5939
diff --git a/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N_en.lang b/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N_en.lang
index 73e0c3b2a..14e9922a8 100755
--- a/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N_en.lang
+++ b/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N_en.lang
@@ -187,6 +187,7 @@ message.error=Error
 message.cannot_open_explorer=Cannot open explorer: 
 message.cancelled=Cancelled
 message.info=Info
+message.loading=Loading...
 
 folder.game=Game Dir
 folder.mod=Mod
diff --git a/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N_en.properties b/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N_en.properties
index 73e0c3b2a..14e9922a8 100755
--- a/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N_en.properties
+++ b/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N_en.properties
@@ -187,6 +187,7 @@ message.error=Error
 message.cannot_open_explorer=Cannot open explorer: 
 message.cancelled=Cancelled
 message.info=Info
+message.loading=Loading...
 
 folder.game=Game Dir
 folder.mod=Mod
diff --git a/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N_zh_TW.lang b/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N_zh_TW.lang
index 0a4f5f555..ac0ddf880 100755
--- a/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N_zh_TW.lang
+++ b/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N_zh_TW.lang
@@ -187,6 +187,7 @@ message.error=錯誤
 message.cannot_open_explorer=無法打開資料管理器:
 message.cancelled=已取消
 message.info=提示
+message.loading=加載中...
 
 folder.game=遊戲資料夾
 folder.mod=MOD資料夾
diff --git a/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N_zh_TW.properties b/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N_zh_TW.properties
index 00fd63059..a6c81f694 100755
--- a/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N_zh_TW.properties
+++ b/HMCUtils/src/main/resources/org/jackhuang/hellominecraft/lang/I18N_zh_TW.properties
@@ -187,6 +187,7 @@ message.error=\u932f\u8aa4
 message.cannot_open_explorer=\u7121\u6cd5\u6253\u958b\u8cc7\u6599\u7ba1\u7406\u5668:
 message.cancelled=\u5df2\u53d6\u6d88
 message.info=\u63d0\u793a
+message.loading=\u52a0\u8f09\u4e2d...
 
 folder.game=\u904a\u6232\u8cc7\u6599\u593e
 folder.mod=MOD\u8cc7\u6599\u593e