ThreadTest.java

public class ThreadTest extends Thread {    
    boolean stop = false;
   	Integer value = 0;    
    public void run() {
        while (!stop) {
        		
        		value++; 
        }
    }

    public static void main(String[] args) 
    		throws Exception {
    	
    	ThreadTest t = new ThreadTest();
        t.start();
        Thread.sleep(2000);
        t.stop = true;
        System.out.println("value =" + t.value);
        Thread.sleep(2000);
        System.out.println("value =" + t.value);
        
    }
}