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Fix UnsupportedOperationException in java lookup

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Mentioned in #412
This commit is contained in:
yushijinhun
2018-08-09 12:41:39 +08:00
parent f16885568e
commit 6777dd7ea7
1 changed files with 12 additions and 6 deletions
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18
HMCLCore/src/main/java/org/jackhuang/hmcl/util/JavaVersion.java
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@@ -22,8 +22,8 @@ import java.nio.file.Files;
import java.nio.file.LinkOption;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.Optional;
import java.util.concurrent.CountDownLatch;
@@ -194,7 +194,7 @@ public final class JavaVersion implements Serializable {
javaVersions = queryMacintosh();
break;
default:
javaVersions = Collections.emptyList();
javaVersions = new ArrayList<>();
break;
}
@@ -214,6 +214,7 @@ public final class JavaVersion implements Serializable {
LATCH.countDown();
}
// ==== Linux ====
private static List<JavaVersion> queryLinux() throws IOException {
Path jvmDir = Paths.get("/usr/lib/jvm");
if (Files.isDirectory(jvmDir)) {
@@ -234,9 +235,11 @@ public final class JavaVersion implements Serializable {
return Collections.emptyList();
}
}
// ====
// ==== OSX ====
private static List<JavaVersion> queryMacintosh() throws IOException {
LinkedList<JavaVersion> res = new LinkedList<>();
List<JavaVersion> res = new ArrayList<>();
File currentJRE = new File("/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home");
if (currentJRE.exists())
@@ -248,9 +251,11 @@ public final class JavaVersion implements Serializable {
return res;
}
// ====
// ==== Windows ====
private static List<JavaVersion> queryWindows() {
LinkedList<JavaVersion> res = new LinkedList<>();
List<JavaVersion> res = new ArrayList<>();
Lang.ignoringException(() -> res.addAll(queryRegisterKey("HKEY_LOCAL_MACHINE\\SOFTWARE\\JavaSoft\\Java Runtime Environment\\")));
Lang.ignoringException(() -> res.addAll(queryRegisterKey("HKEY_LOCAL_MACHINE\\SOFTWARE\\JavaSoft\\Java Development Kit\\")));
Lang.ignoringException(() -> res.addAll(queryRegisterKey("HKEY_LOCAL_MACHINE\\SOFTWARE\\JavaSoft\\JRE\\")));
@@ -259,7 +264,7 @@ public final class JavaVersion implements Serializable {
}
private static List<String> querySubFolders(String location) throws IOException, InterruptedException {
List<String> res = new LinkedList<>();
List<String> res = new ArrayList<>();
String[] cmd = new String[] { "cmd", "/c", "reg", "query", location };
Process process = Runtime.getRuntime().exec(cmd);
process.waitFor();
@@ -273,7 +278,7 @@ public final class JavaVersion implements Serializable {
}
private static List<JavaVersion> queryRegisterKey(String location) throws IOException, InterruptedException {
List<JavaVersion> res = new LinkedList<>();
List<JavaVersion> res = new ArrayList<>();
for (String java : querySubFolders(location)) {
String home = queryRegisterValue(java, "JavaHome");
if (home != null)
@@ -306,4 +311,5 @@ public final class JavaVersion implements Serializable {
}
return null;
}
// ====
}