JDK版本问题Exception in thread "main" java.lang.UnsupportedClassVe

1.Exception in thread /"main/" java.lang.UnsupportedClassVersionError: Hello (Unsup 高手帮忙：Exception in thread "main" java.lang.UnsupportedClassVersionError: Hello (Unsup

orted major.minor version 49.0)

at java.lang.ClassLoader.defineClass0(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 java.lang.ClassLoader.loadClassInternal(Unknown Source)是什么问题，怎么解决？

答：

Path=E:/oracle/ora92/bin;C:/Program Files/Oracle/jre/1.3.1/bin;C:/Program Files/Oracle/jre/1.1.8/bin;[oracle9i对Path的修改，路经在前]%SystemRoot%/system32;%SystemRoot%;%SystemRoot%/System32/Wbem;%JAVA_HOME%/bin;Java的路径在后，所以系统首先选择的将不是安装的jre而是Oracle的jre了

只要把JAVA_HOME提前就行了，改正为

Path=%JAVA_HOME%/bin;E:/oracle/ora92/bin;C:/Program Files/Oracl

转载来自：http://hi.baidu.com/liusha0007/blog/item/362be58106dbb5dfbd3e1e0a.html/cmtid/94929495997e17037bf480c2