Access restriction: The type JPEGImageEncoder is not accessible due to restriction on required libra

Access restriction: The type JPEGImageEncoder is not accessible due to restriction on required libraryC:\Java\jdk1.6.0_17\jre\lib\rt.jar

解决方法：  

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。