package simple.cpu;


public class WaitingTest {
    
    public static Object mutex = new Object();
    
    public WaitingTest() {
    }
    
    public void method1000_500() {
        long time=System.currentTimeMillis();
        while ((System.currentTimeMillis()-time) < 250);
        time=System.currentTimeMillis();
        synchronized(mutex) {
            try {
                mutex.wait(250);
            } catch (InterruptedException ex) {
                ex.printStackTrace();
            }
        }
        System.out.println("wait for "+(System.currentTimeMillis()-time));
        time=System.currentTimeMillis();
        while ((System.currentTimeMillis()-time) < 250);
        try {
            Thread.sleep(250);
        } catch (InterruptedException ex) {
        }
    }
   
    public static void main(String[] args) {
        WaitingTest test=new WaitingTest();
        for (int i=0;i < 4;i++) {
            test.method1000_500();
        }
    }
}