Java开发网 - 新手提问,运行时报错(UnsupportedClassVersionError)

Topic: 新手提问,运行时报错(UnsupportedClassVersionError)

1.新手提问,运行时报错(UnsupportedClassVersionError)

Posted by: flyleaf
Posted on: 2005-12-28 12:23

用javac编译的时候不报错.
但用java运行时却报下面的错,请部是什么原因?是不是环境没有配置好,该怎么配置? 谢谢!

Exception in thread "main" java.lang.UnsupportedClassVersionError: Hello (Unsupp
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)

2.Re:新手提问,运行时报错. [Re: flyleaf]	Copy to clipboard
Posted by: why Posted on: 2005-12-28 20:23 Are you using a runtime (JRE) which version is lower than the compiler (JDK)? Check with javac -version java -version

3.Re:新手提问,运行时报错(UnsupportedClassVersionError) [Re: flyleaf]	Copy to clipboard
Posted by: flyleaf Posted on: 2005-12-29 12:24 谢谢, 我已经找到原因了,是因为我安装了oracle9i所造成的,我把oracle中jdk的path删除了就可以了.