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Editorial Team
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Asked: 2026-05-29T20:29:45+00:00

I recently inherited a large software project written in Java. The last developer used

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I recently inherited a large software project written in Java. The last developer used Eclipse, so that’s what I’m using, but I can’t figure out how to build anything. I don’t see any build scripts, and when I open the project in Eclipse the “Build All” and “Build Project” options are greyed out.

The project is essentially a huge collection of packages that depend on one another. I know this has to be a simple question but I haven’t been able to find an answer through Googling or through just poking around on Eclipse. I’m very new to this IDE – I have worked with Visual Studio for most of my career. Any questions/suggestions would be very much appreciated.

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1 Answer

  1. Editorial Team

    File -> Export -> Export JAR File. Then select your project, press next twice, select the main class.

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    If you just want to run, open the main class and click the green arrow at the top.

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    If you just want to build class files, I believe that Eclipse automatically builds every time you save. You need to select Project -> Build Automatically

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