How to resolve the issue of new code not taking effect in Eclipse cache?

If the changes you made in Eclipse do not take effect, you can try the following solutions:

1. To clear Eclipse cache, click on the “Project” menu, then select “Clean”. Next, choose the project you want to clear the cache for and click “OK”. This will clear the project’s build cache, rebuild, and run the project.
2. To clear the workspace: Close Eclipse, delete the .metadata folder in the workspace directory, restart Eclipse, import the project again, and run it.
3. Ensure to save and build code: After making changes to the code, make sure to save and compile it. You can enable automatic compiling by clicking on the “Project” in the menu bar and selecting “Build Automatically”.
4. Check the correctness of your code: make sure there are no syntax or logic errors. If there are errors, Eclipse may not be able to run the code properly.
5. Check the build path: Make sure your build path includes the newly added code files. You can check and modify the build path by right-clicking on the project, selecting “Properties”, and then choosing “Java Build Path”.
6. Check the runtime configuration: If you are using a specific runtime configuration to run the project, make sure it includes the new code files.

If the above methods do not work, the issue may be caused by other configurations or plugins. You can try restarting Eclipse, updating the Eclipse version, or checking the compatibility of the plugins.