Thread.join not working

A call to join() Guaranteed to cause the current thread to stop executing until the thread it joins with (in other words, the thread it calls join() on) completes.

However, in my program both the threads are executing simultaneously. Thread1 is not waiting for Thread2 to finish its execution.

What is wrong with my program?

public class Launcher1 {


    public static void main(String[] args) {
        JoinExample runnable=new JoinExample();

        Thread thread1=new Thread(runnable);
        Thread thread2=new Thread(runnable);

        thread1.start();

        try {
            Thread.sleep(2000);
        } catch (InterruptedException e1) {
            e1.printStackTrace();
        }

        thread2.start();
        try {
            thread2.join();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

    }

}

public class JoinExample implements Runnable{
    public void run(){
        for(int i=0;i<10;i++){
            System.out.println("i:"+i+" "+Thread.currentThread().getName());

            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

}

Output:

i:0 Thread-0

i:1 Thread-0

i:0 Thread-1

i:2 Thread-0

i:1 Thread-1

i:3 Thread-0

i:4 Thread-0

i:2 Thread-1

i:3 Thread-1

i:5 Thread-0

i:4 Thread-1

i:6 Thread-0

i:7 Thread-0

i:5 Thread-1

i:8 Thread-0

i:6 Thread-1

i:7 Thread-1

i:9 Thread-0

i:8 Thread-1

i:9 Thread-1