How to Resolve \'Source Not Found\' Errors During Eclipse Java Debugging?

Resolving "Source Not Found" Errors in Eclipse Java Debugging

While debugging Java applications in Eclipse, users may encounter the "Source not found" error when attempting to step into:

• Files in different imported projects
• Files in installed Maven repositories

Despite the presence of the files, Eclipse refuses to step into them and offers an "Attach Source" button instead.

Causes and Resolution:

This issue arises due to incorrect source lookup paths in Eclipse. To resolve it, follow these steps:

1. Edit Source Lookup Path:

• Go to Run > Debug Configurations.
• Select the debug target and click the "Source" tab.
• Click the "Edit Source Lookup Path" button.

2. Add Source Paths:

• Add the necessary source paths to allow Eclipse to locate the missing source files.
• For imported projects, ensure that the project is referenced in the Workspace tab.
• For Maven dependencies, specify the repository and artifact ID in the External Files and Libraries tab.

3. Restart Eclipse:

• After updating the source lookup paths, restart Eclipse.
• This is crucial for the changes to take effect and allow Eclipse to access the missing source files.

Upon restarting Eclipse with the correct source lookup paths configured, the "Source not found" error should be resolved, and the debugger will be able to step into all source files as expected.

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