How do you kill a Thread in Java?

Question

How do you kill a java.lang.Thread in Java?

Answer 1

One way is by setting a class variable and using it as a sentinel.

Class Outer {
    public static volatile flag = true;

    Outer() {
        new Test().start();
    }
    class Test extends Thread {

        public void run() {
            while (Outer.flag) {
                //do stuff here
            }
        }
    }

}

Set an external class variable, i.e. flag = true in the above example. Set it to false to 'kill' the thread.