Java错误记录

1、使用JPEGImageEncoder，eclipse报错如下：

Access restriction: The type JPEGImageEncoder is not accessible due to restriction on required library C:\Java\jre1.6.0_07\lib\rt.jar
Access restriction: The type JPEGCodec is not accessible due to restriction on required library C:\Java\jre1.6.0_07\lib\rt.jar
Access restriction: The method createJPEGEncoder(OutputStream) from the type JPEGCodec is not accessible due to restriction on required library C:\Java\jre1.6.0_07\lib\rt.jar

Access restriction: The method encode(BufferedImage) from the type JPEGImageEncoder is not accessible due to restriction on required library C:\Java\jre1.6.0_07\lib\rt.jar

这个是eclipse的设置问题，它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就可以了。