This plugin provides Eclipse JDT AST Viewer for Java source code in IntelliJ.
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Follow the instructions for checking out IntelliJ IDEA Community Edition (you only need to check, and not build).
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Follow the instructions for setting up IntelliJ for plugin developments.
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Open this local git repository in IntelliJ as a project, then right-click on the opened project folder inside IntelliJ and select "Prepare Plugin Module 'jdt-astview' For Deployment".
This produces a plugin zip file that you can install in your IntelliJ instance.