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摘要： not accessible due to restriction在引用如下包报错import sun.swing.DefaultLookup;Access restriction: The type DefaultLookup is not accessible due to restriction on required library解决办法sun.net包里的，在eclipse里默认是不让用的。解决办法是自定义access rules工程上右键->工程属性->java builder path->Libraries标签，点击JRE System Library里面的A 阅读全文