jdk1.6编译的plug-in转成jdk1.5时的错误

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原创 2010-08-23 09:34:57 250 阅读 AI 写同款· GEO 优化 ›

将原来build path中JRE1.6换成jre1.5后，运行'Project/Clean', 启动plug-in时仍然报错，

org.eclipse.core.runtime.CoreException[1]: java.lang.UnsupportedClassVersionError: Bad version number in .class file
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
	at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.defineClass(DefaultClassLoader.java:161)
	at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.defineClass(ClasspathManager.java:501)
	at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findClassImpl(ClasspathManager.java:471)

在plug-in.xml的editor中'Overview'tab页，点击'Update the classpath settings', jdk才能真正被换掉。这样会看到一些jdk1.6合法但jdk1.5非法的错误，如对Interface的方法注解Override

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