ThreadDemo.java

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();
 }
}