Eclipse. The archive which is referenced by the classpath and does not exist

When compiling the Java project with Eclipse, the system reported this error when running, but I also searched some problems, but none of them solved.

Now say my solution, I looked at the project's properties in the build path, checked the options, and did not find the problem.

Finally I deleted the project and re-created the project problem solved.

Cause of Error: The name of the project and the name of the workspace are the same, resulting in an error.

Workaround: Modify the name of the project to avoid the same name as the work space.

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Eclipse. The archive which is referenced by the classpath and does not exist