MyWaitNotify3.java

public class MyWaitNotify3 {
    MonitorObject myMonitorObject = new MonitorObject();
    boolean wasSignalled = false;

    public void doWait() {
        synchronized (myMonitorObject) {
        while (!wasSignalled) {
            try {
                myMonitorObject.wait();
            } catch (InterruptedException e) {
            }
        }
        wasSignalled = false;
    }

    public void doNotify() {
        synchronized (myMonitorObject) {
        wasSignalled = true;
        myMonitorObject.notify();
    }
}