# Ionic run Android RC0 Error **URL:** \ **Category:** ionic-v3\ **Created:** [October 4, 2016, 8:17am UTC](https://forum.ionicframework.com/t/ionic-run-android-rc0-error/65682 "2016-10-04T08:17:26Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![nitishrajput01](https://sea1.discourse-cdn.com/ionicframework/user_avatar/forum.ionicframework.com/nitishrajput01/32/123978_2.png) [@nitishrajput01](https://forum.ionicframework.com/u/nitishrajput01)\ **Post date:** [October 4, 2016, 8:17am UTC](https://forum.ionicframework.com/t/ionic-run-android-rc0-error/65682/1 "2016-10-04T08:17:26Z")
``` Hi i am trying to run my project on emulator but i am getting this error any solution ? :compileDebugSources UP-TO-DATE :transformClassesWithDexForDebug java.lang.UnsupportedClassVersionError: com/android/dx/command/Main : Unsupported major.minor version 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:800) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) at java.net.URLClassLoader.access$100(URLClassLoader.java:71) at java.net.URLClassLoader$1.run(URLClassLoader.java:361) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482) Exception in thread "main" ``` java.lang.UnsupportedClassVersionError: com/android/dx/command/Main : Unsupported major.minor version 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:800) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:449) at java.net.URLClassLoader.access$100(URLClassLoader.java:71) at java.net.URLClassLoader$1.run(URLClassLoader.java:361) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) ``` at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482) ``` Exception in thread “main” FAILED FAILURE: Build failed with an exception. - What went wrong: Execution failed for task ‘:transformClassesWithDexForDebug’. > com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process ‘command ‘C:\Program File s\Java\jdk1.7.0\_79\bin\java.exe’’ finished with non-zero exit value 1 - Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. BUILD FAILED Total time: 27.984 secs Error: Error code 1 for command: cmd with args: /s,/c,“c:\Users\nitish.kumar.IDS-LOGIC\Desktop\Nk\sqlite\Ovulation\platforms android\gradlew cdvBuildDebug -b c:\Users\nitish.kumar.IDS-LOGIC\Desktop\Nk\sqlite\Ovulation\platforms\android\build.gradle - PcdvBuildArch=x86 -Dorg.gradle.daemon=true -Pandroid.useDeprecatedNdk=true” ---
**Author:** ![reedrichards](https://avatars.discourse-cdn.com/v4/letter/r/34f0e0/32.png) [@reedrichards](https://forum.ionicframework.com/u/reedrichards)\ **Post date:** [October 4, 2016, 8:41am UTC](https://forum.ionicframework.com/t/ionic-run-android-rc0-error/65682/2 "2016-10-04T08:41:22Z")
``` major.minor version 52.0 ``` sounds like a java problem to me. something which occurs when you want to run a code which was compilated with a newer version of java of the one you use to run (like compilated with java 8 and running it with java 7) ---
**Author:** ![nitishrajput01](https://sea1.discourse-cdn.com/ionicframework/user_avatar/forum.ionicframework.com/nitishrajput01/32/123978_2.png) [@nitishrajput01](https://forum.ionicframework.com/u/nitishrajput01)\ **Post date:** [October 4, 2016, 9:04am UTC](https://forum.ionicframework.com/t/ionic-run-android-rc0-error/65682/3 "2016-10-04T09:04:13Z")
@reedrichardsm Hi Thanks for your reply do you know how to resolve that issue ? Actually I am using java 7 ---
**Author:** ![reedrichards](https://avatars.discourse-cdn.com/v4/letter/r/34f0e0/32.png) [@reedrichards](https://forum.ionicframework.com/u/reedrichards)\ **Post date:** [October 4, 2016, 9:52am UTC](https://forum.ionicframework.com/t/ionic-run-android-rc0-error/65682/4 "2016-10-04T09:52:17Z")
Well can’t unfortunately give you the right answer ☹ Also I’m just guessing…but maybe some clues: How do you build your app? Which comman(s) did you run? Which JDK are installed on your computer? How is your JAVA\_HOME defined? ---
**Author:** ![nitishrajput01](https://sea1.discourse-cdn.com/ionicframework/user_avatar/forum.ionicframework.com/nitishrajput01/32/123978_2.png) [@nitishrajput01](https://forum.ionicframework.com/u/nitishrajput01)\ **Post date:** [October 4, 2016, 10:20am UTC](https://forum.ionicframework.com/t/ionic-run-android-rc0-error/65682/5 "2016-10-04T10:20:08Z")
@reedrichards well thanks for reply finally working. ---
**Author:** ![reedrichards](https://avatars.discourse-cdn.com/v4/letter/r/34f0e0/32.png) [@reedrichards](https://forum.ionicframework.com/u/reedrichards)\ **Post date:** [October 4, 2016, 10:49am UTC](https://forum.ionicframework.com/t/ionic-run-android-rc0-error/65682/6 "2016-10-04T10:49:18Z")
coolio. just for the record, briefly how did you solve your issue? ---
**Author:** ![nitishrajput01](https://sea1.discourse-cdn.com/ionicframework/user_avatar/forum.ionicframework.com/nitishrajput01/32/123978_2.png) [@nitishrajput01](https://forum.ionicframework.com/u/nitishrajput01)\ **Post date:** [October 4, 2016, 10:52am UTC](https://forum.ionicframework.com/t/ionic-run-android-rc0-error/65682/7 "2016-10-04T10:52:16Z")
Well I changed the Java\_Home path to new jdk directory in enviroment variable that resolve this issue ---
**Author:** ![reedrichards](https://avatars.discourse-cdn.com/v4/letter/r/34f0e0/32.png) [@reedrichards](https://forum.ionicframework.com/u/reedrichards)\ **Post date:** [October 4, 2016, 10:53am UTC](https://forum.ionicframework.com/t/ionic-run-android-rc0-error/65682/8 "2016-10-04T10:53:08Z")
thx for the feedback. could be helpful one day 😉