This portal will explain how to create a patch, modify the core JOSM application or existing plugins.
At least basic Java programming skills are necessary. Please consult Portals how could you improve JOSM without Java skills.
Source code and JOSM builds
- Installing and Running JOSM
- Source code#Getthesource
- Source code#CompilingusingAnt
- Compiling JOSM using IDE
- Development Guidelines (Coding style and Internationalization)
- Patch Guidelines (How to submit a patch)
- Track the state of development (Release Schedule)
- Various Eclipse tips
- Video: how to checkout JOSM into Eclipse
- Video: how to checkout a JOSM plugin into Eclipse