hello,I have a problem with my code,my develop tool is Eclipse, i use it programmed a simple project,however it can not run sucessfully.
The error messages are these.

hello,can you help me solve the problem
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- piaoyiren 2022-07-16 20:32关注
you can config your build path such as JRE system library,,if that can not be useful,you can create a new project and copy the code to your the new project .
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