I am looking at an example which code is:

```
class SimpleThread extends Thread {
    public SimpleThread(String str) {
        super(str);
}

public void run() {
    for (int i = 0; i < 10; i++) {
        System.out.println(i + " " + getName());
            try {
        sleep((int)(Math.random() * 1000));
        } catch (InterruptedException e) {}
    }
    System.out.println("DONE! " + getName());
    }
}

```

and

```
class TwoThreadsTest {
    public static void main (String args[]) {
        new SimpleThread("Jamaica").start();
        new SimpleThread("Fiji").start();
    }
}

```

My question is: is there a way each thread does its own code? For example, one thread increments a variable, while the other thread increments other variable.
Thanks.

P.S. Example's link is: <http://www.cs.nccu.edu.tw/~linw/javadoc/tutorial/java/threads/simple.html>