MyWaitNotify2.java

public class MyWaitNotify2 {
    MonitorObject myMonitorObject = new MonitorObject();
    boolean wasSignalled = false;

    public void doWait() {
        synchronized (myMonitorObject) {
        if (!wasSignalled) {

        try {
            myMonitorObject.wait();
        } catch (InterruptedException e) { 
        }
        wasSignalled = false;
    }

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