The project cannot be built until build path error

报错;
error:
The project cannot be built until buildpath errors are resolved

翻译:无法在生成路径错误解决之前生成项目
解决方法:
1.项目鼠标右键-----选择properties----Java Bulid Path----Libraries----选中带x号JRE System Library点击右侧Remove
2.建立自己的用户自定义类库-右侧Add Library----User Library-----New 输入自己的名称-----Finish完成

The project cannot be built until build path error
3.添加成功后
The project cannot be built until build path error

转载于:https://blog.51cto.com/14150615/2339678