class Display {

synchronized void show(int i) {

try {

System.out.println(i);

Thread.sleep(1500);

System.out.println(i);

} catch (InterruptedException e) {

System.out.println("Caught Exception");

}

}

}

class T implements Runnable {

Display d = new Display();

T() {

Thread t1 = new Thread(this);

t1.setName("odd");

Thread t2 = new Thread(this);

t2.setName("even");

t1.start();

t2.start();

}

public void run() {

if (Thread.currentThread().getName().equals("odd")) {

for (int i = 1; i < 20; i = i + 2) {

this.d.show(i);

}

} else {

for (int i = 0; i < 20; i = i + 2) {

this.d.show(i);

}

}

}

}

class ThreadDemo {

public static void main(String args[]) {

T obj = new T();

}

}