引用src.zip时、报“rt.jar is not on its project's build path”的解决方法 当经过引用src.zip想看JDK标准类的源码时、有时会报以下错误: “an error occurred while opening the source attachment form ” “jre\lib\rt.jar is not on its project's build path” 解决办法以下: 1. Open project properties. 2. Select Java Build Path node. 3. Select Libraries tab. 4. Remove JRE System Library 一次 5. 再次 Add Library JRE System Library