A JAVA Exception has occurred 問題 解決（轉）

 

 

Exception in thread "main" java.lang.UnsupportedClassVersionError: com/test/inherited/InheritableSon : 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) 

 

查看是因為編譯環境的改變造成的。 
解決辦法： 
將項目的編譯環境設置成當前的JDK版本即可 
步驟： 
1. 右鍵項目—>Properties—> java Compiler–>Compiler Compliance level 
2. 選擇自己安裝的當前的JDK環境即可