Run single java file with standard main(String [] args) method - Android Studio

Question

To start with - Yes, I know that this is crazy/strange. But I need it :).

I want to find simpliest way to run single java file (and prefer non-termi

Answer 1

If nothing else, you can make a quick JUnit test that calls your class's main method.

Answer 2

The easiest way (for me) is to do a right click in your editor and select "Run ClassName.main()". See screenshot. Using Android Studio version 1.4.1.

Answer 3

This may be too late but this might help other developers,

If you're using JAVA, you need to write it as told by @Andrey.

If you're using Kotlin, you can simply write a function without making a Class.

fun main(){
     println("you")
}

This will work.

But, remember, function name should only be main and don't use anything that is part of Android JDK inside this main function.

Ex:- if you write

fun main(){
   Log.e("you","you")
}

Now as Log is part of Android, you'll get runtime exception saying

Exception in thread "main" java.lang.RuntimeException: Stub!

Answer 4

1) Create the class with main() method:

public class Test1 {

    public static void main(String[] args) {
        System.out.println("hello1");
    }
}

2) hit ctrl+shift+F10 (or ctrl+shift+R for Mac)

It will compile, assemble and print

hello1

Answer 5

One thing that might be confusing you, like it was confusing me:

If there is the standard method to start Java application

public static void main (String[] args ) {
// your block here

}

Android Studio will automatically give an option "Run YourClass.mainActivity()", when you right-click anywhere in the editor's editing space.

Just right click in the Java file and there will be an option to run that particular Java class.