New to Java

For example if I have the following setup:

/*
Path:   /mnt/e/java/include
Files:  X1.java   X2.java

/ ****  X2   "header" file  ****/
public class X2 {
    public static void extCall1() {
        System.out.println("dude");
    }
}

/****  X1  "main" file  ****/
import "/mnt/e/java/include/X2.*";  // is there a way to do something like this?

public class X1 
{ 
    include <X2>;                // or something like this?

    public static void main(String [] args)
    {
        extCall1();              // so this would be possible
        X2.extCall1();           // instead of this ? 
    }
}

Or is Java intentionally designed so that code will more clearly reflect its sources?
Thanks