Eclipse控制台头中'2'的含义是什么：MyApp（2）[Java Application]

Question

I'm writing a Swing application in Eclipse, and I just noticed that, after I launch the application, the Eclipse console header has a '2' in parentheses, as in:

MyApp (2) [Java Application] C:\\Program Files\\Java ...

Whenever I've used Eclipse before, I only noticed the number '1' there.

Does anyone know the meaning of these numbers?

Answer 1

As by default the action of clicking on close will not exit that java process, hence even you closed that java swing application, the java process still running.
That is the reason of 2 appear on your eclipse since there exists 2 java swing processes on your machine.
To quit that the disposed process, you need to click on the red square button on terminal tab.
Or I will suggest you to set default Close Action with exit .

Answer 2

This is the name of the Run Configuration for the application. Eclipse makes up a name for this configuration each time you run a new program, if there is already an application with the app name it adds (1), (2) ... to the name.

Open Run > Run Configurations (or Debug Configurations ) and you will see the list of configurations that Eclipse has. You can edit the names if you want or delete out of date configurations.