报错:
Access restriction: The type SwingUtilities2 is not accessible due to restriction on required library C:\Java\jre1.6.0_07\lib\rt.jar
解决：
Eclipse 默认把这些受访问限制的API设成了ERROR。只要把Windows-Preferences-Java-Complicer- Errors/Warnings里面的Deprecated and restricted API中的Forbidden references(access rules)选为Warning就可以编译通过。