Error:Internal error: (java.lang.UnsupportedClassVersionError) gw/gosu/ij/compiler/jps/settings/JpsGosuModelSerializerExtension : Unsupported major.minor version 52.0
java.lang.UnsupportedClassVersionError: gw/gosu/ij/compiler/jps/settings/JpsGosuModelSerializerExtension : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:345)
at java.util.ServiceLoader$1.next(ServiceLoader.java:421)
at com.intellij.util.containers.ContainerUtilRt.copy(ContainerUtilRt.java:185)
at com.intellij.util.containers.ContainerUtilRt.newArrayList(ContainerUtilRt.java:168)
at org.jetbrains.jps.plugin.impl.JpsPluginManagerImpl.loadExtensions(JpsPluginManagerImpl.java:18)
at org.jetbrains.jps.service.impl.JpsServiceManagerImpl.getExtensions(JpsServiceManagerImpl.java:59)
at org.jetbrains.jps.model.serialization.JpsModelSerializerExtension.getExtensions(JpsModelSerializerExtension.java:46)
at org.jetbrains.jps.model.serialization.library.JpsSdkTableSerializer.getSdkPropertiesSerializer(JpsSdkTableSerializer.java:205)
at org.jetbrains.jps.model.serialization.library.JpsSdkTableSerializer.loadSdk(JpsSdkTableSerializer.java:99)
at org.jetbrains.jps.model.serialization.library.JpsSdkTableSerializer.loadSdks(JpsSdkTableSerializer.java:80)
at org.jetbrains.jps.model.serialization.JpsGlobalLoader$SdkTableSerializer.loadExtension(JpsGlobalLoader.java:144)
at org.jetbrains.jps.model.serialization.JpsGlobalLoader$SdkTableSerializer.loadExtension(JpsGlobalLoader.java:137)
at org.jetbrains.jps.model.serialization.JpsLoaderBase.loadComponents(JpsLoaderBase.java:62)
at org.jetbrains.jps.model.serialization.JpsGlobalLoader.loadGlobalComponents(JpsGlobalLoader.java:83)
at org.jetbrains.jps.model.serialization.JpsGlobalLoader.load(JpsGlobalLoader.java:73)
at org.jetbrains.jps.model.serialization.JpsGlobalLoader.loadGlobalSettings(JpsGlobalLoader.java:59)
at org.jetbrains.jps.model.serialization.impl.JpsSerializationManagerImpl.loadModel(JpsSerializationManagerImpl.java:38)
at org.jetbrains.jps.cmdline.JpsModelLoaderImpl.loadModel(JpsModelLoaderImpl.java:45)
at org.jetbrains.jps.cmdline.BuildRunner.load(BuildRunner.java:78)
at org.jetbrains.jps.cmdline.BuildSession.runBuild(BuildSession.java:265)
at org.jetbrains.jps.cmdline.BuildSession.run(BuildSession.java:124)
at org.jetbrains.jps.cmdline.BuildMain$MyMessageHandler$1.run(BuildMain.java:242)
at org.jetbrains.jps.service.impl.SharedThreadPoolImpl$1.run(SharedThreadPoolImpl.java:41)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
is it becouse of some JARs?
when I write the code I didn't get any problem, it's only when I tried to run the program..