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Android

Zandre Alberts
Zandre Alberts
2,613 Points
Posted by Zandre Alberts
Zandre Alberts
2,613 Points

Android studio Gradle build error

I just started an app and I get this error:

Error:java.lang.UnsupportedClassVersionError: com/android/dx/command/Main : Unsupported major.minor version 52.0 Error: at java.lang.ClassLoader.defineClass1(Native Method) Error:java.lang.UnsupportedClassVersionError: com/android/dx/command/Main : Unsupported major.minor version 52.0 Error: at java.lang.ClassLoader.defineClass1(Native Method) Error: at java.lang.ClassLoader.defineClass(ClassLoader.java:800) Error: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) Error: at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) Error: at java.net.URLClassLoader.access$100(URLClassLoader.java:71) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:361) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:355) Error: at java.security.AccessController.doPrivileged(Native Method) Error: at java.net.URLClassLoader.findClass(URLClassLoader.java:354) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:425) Error: at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) Error:java.lang.UnsupportedClassVersionError: com/android/dx/command/Main : Unsupported major.minor version 52.0 Error:java.lang.UnsupportedClassVersionError: com/android/dx/command/Main : Unsupported major.minor version 52.0 Error: at java.lang.ClassLoader.defineClass1(Native Method) Error: at java.lang.ClassLoader.defineClass1(Native Method) Error: at java.lang.ClassLoader.defineClass(ClassLoader.java:800) Error: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) Error: at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) Error: at java.net.URLClassLoader.access$100(URLClassLoader.java:71) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:361) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:355) Error: at java.security.AccessController.doPrivileged(Native Method) Error: at java.net.URLClassLoader.findClass(URLClassLoader.java:354) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:425) Error: at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:358) Error: at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482) Error:Exception in thread "main" Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:358) Error: at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482) Error:Exception in thread "main" Error: at java.lang.ClassLoader.defineClass(ClassLoader.java:800) Error: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) Error: at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) Error: at java.net.URLClassLoader.access$100(URLClassLoader.java:71) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:361) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:355) Error: at java.security.AccessController.doPrivileged(Native Method) Error: at java.net.URLClassLoader.findClass(URLClassLoader.java:354) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:425) Error: at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:358) Error: at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482) Error:Exception in thread "main" Error: at java.lang.ClassLoader.defineClass(ClassLoader.java:800) Error: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) Error: at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) Error: at java.net.URLClassLoader.access$100(URLClassLoader.java:71) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:361) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:355) Error: at java.security.AccessController.doPrivileged(Native Method) Error: at java.net.URLClassLoader.findClass(URLClassLoader.java:354) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:425) Error: at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:358) Error: at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482) Error:Exception in thread "main" :app:transformClassesWithDexForDebug FAILED Error:Execution failed for task ':app:transformClassesWithDexForDebug'.

com.android.build.api.transform.TransformException: java.lang.RuntimeException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.7.0_79\bin\java.exe'' finished with non-zero exit value 1 Information:BUILD FAILED Information:Total time: 23.746 secs Error:java.lang.UnsupportedClassVersionError: com/android/dx/command/Main : Unsupported major.minor version 52.0 Error: at java.lang.ClassLoader.defineClass1(Native Method) Error: at java.lang.ClassLoader.defineClass(ClassLoader.java:800) Error: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) Error: at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) Error: at java.net.URLClassLoader.access$100(URLClassLoader.java:71) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:361) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:355) Error: at java.security.AccessController.doPrivileged(Native Method) Error: at java.net.URLClassLoader.findClass(URLClassLoader.java:354) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:425) Error: at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:358) Error: at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482) Error:Exception in thread "main" Error:java.lang.UnsupportedClassVersionError: com/android/dx/command/Main : Unsupported major.minor version 52.0 Error: at java.lang.ClassLoader.defineClass1(Native Method) Error: at java.lang.ClassLoader.defineClass(ClassLoader.java:800) Error: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) Error: at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) Error: at java.net.URLClassLoader.access$100(URLClassLoader.java:71) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:361) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:355) Error: at java.security.AccessController.doPrivileged(Native Method) Error: at java.net.URLClassLoader.findClass(URLClassLoader.java:354) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:425) Error: at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:358) Error: at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482) Error:Exception in thread "main" Error:java.lang.UnsupportedClassVersionError: com/android/dx/command/Main : Unsupported major.minor version 52.0 Error: at java.lang.ClassLoader.defineClass1(Native Method) Error: at java.lang.ClassLoader.defineClass(ClassLoader.java:800) Error: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) Error: at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) Error: at java.net.URLClassLoader.access$100(URLClassLoader.java:71) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:361) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:355) Error: at java.security.AccessController.doPrivileged(Native Method) Error: at java.net.URLClassLoader.findClass(URLClassLoader.java:354) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:425) Error: at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:358) Error: at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482) Error:Exception in thread "main" Error:java.lang.UnsupportedClassVersionError: com/android/dx/command/Main : Unsupported major.minor version 52.0 Error: at java.lang.ClassLoader.defineClass1(Native Method) Error: at java.lang.ClassLoader.defineClass(ClassLoader.java:800) Error: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) Error: at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) Error: at java.net.URLClassLoader.access$100(URLClassLoader.java:71) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:361) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:355) Error: at java.security.AccessController.doPrivileged(Native Method) Error: at java.net.URLClassLoader.findClass(URLClassLoader.java:354) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:425) Error: at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:358) Error: at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482) Error:Exception in thread "main" Error:java.lang.UnsupportedClassVersionError: com/android/dx/command/Main : Unsupported major.minor version 52.0 Error: at java.lang.ClassLoader.defineClass1(Native Method) Error: at java.lang.ClassLoader.defineClass(ClassLoader.java:800) Error: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) Error: at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) Error: at java.net.URLClassLoader.access$100(URLClassLoader.java:71) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:361) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:355) Error: at java.security.AccessController.doPrivileged(Native Method) Error: at java.net.URLClassLoader.findClass(URLClassLoader.java:354) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:425) Error: at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:358) Error: at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482) Error:Exception in thread "main" Error:java.lang.UnsupportedClassVersionError: com/android/dx/command/Main : Unsupported major.minor version 52.0 Error: at java.lang.ClassLoader.defineClass1(Native Method) Error: at java.lang.ClassLoader.defineClass(ClassLoader.java:800) Error: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) Error: at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) Error: at java.net.URLClassLoader.access$100(URLClassLoader.java:71) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:361) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:355) Error: at java.security.AccessController.doPrivileged(Native Method) Error: at java.net.URLClassLoader.findClass(URLClassLoader.java:354) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:425) Error: at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:358) Error: at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482) Error:Exception in thread "main" Error:java.lang.UnsupportedClassVersionError: com/android/dx/command/Main : Unsupported major.minor version 52.0 Error: at java.lang.ClassLoader.defineClass1(Native Method) Error: at java.lang.ClassLoader.defineClass(ClassLoader.java:800) Error: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) Error: at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) Error: at java.net.URLClassLoader.access$100(URLClassLoader.java:71) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:361) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:355) Error: at java.security.AccessController.doPrivileged(Native Method) Error: at java.net.URLClassLoader.findClass(URLClassLoader.java:354) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:425) Error: at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:358) Error: at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482) Error:Exception in thread "main" Error:java.lang.UnsupportedClassVersionError: com/android/dx/command/Main : Unsupported major.minor version 52.0 Error: at java.lang.ClassLoader.defineClass1(Native Method) Error: at java.lang.ClassLoader.defineClass(ClassLoader.java:800) Error: at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) Error: at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) Error: at java.net.URLClassLoader.access$100(URLClassLoader.java:71) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:361) Error: at java.net.URLClassLoader$1.run(URLClassLoader.java:355) Error: at java.security.AccessController.doPrivileged(Native Method) Error: at java.net.URLClassLoader.findClass(URLClassLoader.java:354) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:425) Error: at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) Error: at java.lang.ClassLoader.loadClass(ClassLoader.java:358) Error: at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482) Error:Exception in thread "main" Information:181 errors Information:0 warnings Information:See complete output in console

2 Answers

Seth Kroger
Seth Kroger
56,413 Points
Seth Kroger
Seth Kroger
56,413 Points

The build tools require Java 8 but gradle is running under Java 7. Make sure you have a Java 8 SDK installed. If not download/install it: http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html Then go to File> Project Settings in the menu (also the folder icon with 3 blue squares up top) and select SDK Location of the left s Switch the JDK over. (There's a new option on that panel "Use embedded JDK (recommended)". You can try checking it first to see if that solves the issue. I just haven't had the opportunity to try it yet.)

Zandre Alberts
Zandre Alberts
2,613 Points
Zandre Alberts
Zandre Alberts
2,613 Points

Thanks got it and it works