java.lang.UnsupportedClassVersionError: Bad version number in .class file
問題:MyEclipse 安裝後執行一個java項目,出現下面的異常;
- java.lang.UnsupportedClassVersionError: Bad version number in .class file
- at java.lang.ClassLoader.defineClass1(Native Method)
- at java.lang.ClassLoader.defineClass(Unknown Source)
- at java.security.SecureClassLoader.defineClass(Unknown Source)
- at java.net.URLClassLoader.defineClass(Unknown Source)
- at java.net.URLClassLoader.access$100(Unknown Source)
- at java.net.URLClassLoader$1.run(Unknown Source)
- at java.security.AccessController.doPrivileged(Native Method)
- at java.net.URLClassLoader.findClass(Unknown Source)
- at java.lang.ClassLoader.loadClass(Unknown Source)
- at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
- at java.lang.ClassLoader.loadClass(Unknown Source)
- at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.loadClass(RemoteTestRunner.java:683)
- at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.loadClasses(RemoteTestRunner.java:425)
- at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:445)
- at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
- at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
- at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
解決方法:
1. java JDK版本確認。
2. TOMCAT JDK版本確認(MyEclipse TOMCAT)。
3. TOMCAT JDK版本確認(TOMCAT X.X)。
4. JRE 版本確認