CODEWITHSUNDEEP
javaeclipseintellij-idea
user619804
user619804

Reputation: 2356

IntelliJ run single Java file

I am switching from Eclipse to IntelliJ, I'm trying to do something that's really simple to do in Eclipse. This is probably a simple question, but I have a project in IntelliJ with a bunch of small .java class files with main classes. These are just small practice programs I use for testing. I am trying to right click one of the java class files, then 'Run'. I'm expecting the class to run and see its output in the console - it looks like IntelliJ is instead trying to compile the entire project, including test classes.

How can I make IntelliJ just run the single class file without attempting to do a build of the entire project?

Also - In eclipse I am used to copying arguments to my main class into an input window when running a single java class. Is there a way to do this in IntelliJ.

Thanks, I know I can do this from a terminal, but for my purposes it would be helpful to quickly run small java programs from an ide.

Upvotes: 15

Views: 28768

Answers (5)

AGAG
AGAG

Reputation: 1

Run->Edit Configurations and then change the class name to which you want run.

Example: Change com.package.Main to com.package.Stopwatch if you want to run Stopwatch Class(File).

Screenshot of Edit Configurations tab I'm talking about

Upvotes: 0

Thanos
Thanos

Reputation: 340

You can also use the not-so-new-now Scratch Files; they're pretty good for trying simple things out and they are saved, so you can easily find them under recent files, or by name.

Upvotes: 4

DimaSan
DimaSan

Reputation: 12724

Another option could be useful and quick for you. Just write your class with main method you want to run, and then press a little green triangle either behind your main method or behind your class name:

enter image description here

After that you will be able to choose an option e.g., Run, Debug or Run with Coverage:

enter image description here

In this case IDEA will just run your class without building the entire project.

Upvotes: 9

Abdullah Mohammad Motiullah
Abdullah Mohammad Motiullah

Reputation: 12592

Right click your class in the left side bar. Hit Run. But your class must have a main method.

enter image description here

Upvotes: 3

A.K.Desai
A.K.Desai

Reputation: 1294

You can change the Default settings based on your needs, to either automatically build after each change or manually. This can be achieved by clicking on File -> Other Settings -> Default Settings. This is the popup window.

Default Preferences

To change the run configurations, you can follow below steps.

  1. Goto Run tab at the top Toobar and click on Edit Configurations.
  2. Click + icon and select Application. This opens a new popup window where you can add all your VM arguments & Program arguments similar to Eclipse.

Upvotes: 4

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