Contoh Program Java IllegalcMonitor State Exception

Contoh 1 Program java  IllegalcMonitor State Exception


public class Belajar1 {
public Integer total = 0;

public static void main(String[] args) {
Belajar1 e1 = new Belajar1();
e1.doStuff();
}

public void doStuff() {
System.out.println("pertama kali mulai");
synchronized (total) {
System.out.println("mulai lagi");
A a = new A(this);
a.start();
try {
total.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println("Total=" + total);
}
}

}

class A extends Thread {
private Belajar1 belajar1;

public A(Belajar1 e) {
belajar1 = e;
}

public void run() {
synchronized (belajar1.total) {
for (int i = 0; i < 10; i++) {
belajar1.total += i;
}
belajar1.total.notify();
}
}
}

Contoh 2 Program java  IllegalcMonitor State Exception

class NotifyLab 

{

static class Rendezvous

{

synchronized public void hurryUpAndWait()

{

System.out.println("*****-------****");

try

{

wait();

}

catch(Exception e)

{

System.out.println(e);

}

}

synchronized public void not()

{

Thread.currentThread().notify();

}

}

static class Waiter extends Thread

{

Rendezvous r;

public Waiter(Rendezvous r,String name)

{

super(name);

this.r =r;

}

public void run()

{

r.hurryUpAndWait();

System.out.println(Thread.currentThread().getName()+" Notified");

}

}

public static void main(String[] args) 

{

Rendezvous r = new Rendezvous();

Waiter wt[] = new Waiter[5];

for(int i=0;i<=4;i++)

{

wt[i] = new Waiter(r,"Thread "+(i+1));

wt[i].start();

}

r.not();

}

}