Eclipse Java Debugging: Resolving "Source Not Found" Error
When debugging Java applications within Eclipse, encountering the "Source not found" error can be frustrating, especially when stepping into files located in different projects or maven repositories. This article aims to address the root cause of this issue and provide a step-by-step guide to resolving it.
Cause of the Error
Eclipse relies on specific source lookup paths to locate the source code corresponding to the Java classes being debugged. If Eclipse cannot locate the source code in these paths, it will trigger the "Source not found" error.
In the cases mentioned in the original question, the imported project or maven repository may contain the class files but not the corresponding source code. As a result, Eclipse is unable to access the source code and displays the error.
Solution
To resolve this issue, we need to update the Source Lookup paths in Eclipse to include the locations where the source code is located.
Edit Source Lookup Paths
- Select the debug target in the Debug view (typically on the bottom left-hand side).
- Right-click on the debug target and select "Edit Source Lookup..." from the context menu.
- In the Source Path Dialog, edit the path by clicking on the "Add..." button and browsing to the directory containing the missing source code.
- Repeat the process for all directories containing missing source code.
Restart Eclipse
Finally, it is essential to restart Eclipse for the updated source lookup paths to take effect. After restarting, the debugger should be able to step into the previously inaccessible source code.
By following these steps, you can resolve the "Source not found" error and ensure seamless debugging of Java applications in Eclipse.
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