= Compiling using ​IntelliJ IDEA = 

This describes how to develop and [wiki:DevelopersGuide/Compiling compile] JOSM using [https://www.jetbrains.com/idea/ IntelliJ IDEA]

1. Getting the source Source → [[Source code#Getthesource]]
1. Run ant in the source directory to obtain a `josm-custom.jar` → [[DevelopersGuide/Compiling#CompilingusingAnt]]
1. In IntelliJ: File → New → Project from Existing Sources
  1. Navigate to the JOSM source code [[BR]] [[Image(intellij-from-sources-01.png)]]
  1. [[Image(intellij-from-sources-02.png)]]
  1. [[Image(intellij-from-sources-03.png)]]
  1. [[Image(intellij-from-sources-04.png)]]
  1. [[Image(intellij-from-sources-05.png)]]
1. File → Project Structure
  * Modules → Sources: Exclude the directory `src/org/apache` [[BR]] [[Image(intellij-exclude-apache.png)]]
  * Modules → Dependencies: Make sure that `josm-custom` (i.e., the file generated by Ant is listed)
  * Modules → Dependencies: Add Groovy (you might need to configure that at "Global Libraries") [[BR]] [[Image(intellij-add-groovy.png)]]
1. Run → Edit Configuration
  * Add an "Application" configuration [[BR]] [[Image(intellij-run-configuration.png)]]

Whenever presets, images, styles, or parser definitions change, re-run Ant in order to have those modifications included in `josm-custom.jar`.

This is a bit hackish, but works nicely. ☻