This is an IntelliJ plugin to run a file with a custom java runner. The plugin will pass in the name of the currently edited file as the only argument to your custom runner. Write a custom runner and specify its location in the settings of the plugin. To install the plugin, go to IntelliJ's home. You should see a directory called 'plugins'. Inside that directory, create the directory structure 'myrunner/lib' and paste the MyRunner.jar into 'lib'.