public class Test {
    public static void main(String[] args) throws InterruptedException {
        Runnable t1 = new Runnable() {
            public void run() {
                try {
                    System.out.print("t1before");
                    Thread.sleep(100);
                    System.out.print("t1after");
                } catch (InterruptedException e) {
                }
            }
        };

        final Thread t2 = new Thread() {
            public void run() {
                try {
                    System.out.print("t2before");
                    wait();
                    System.out.print("t2after");
                } catch (InterruptedException e) {
                }
            }
        };
        t2.start();
        new Thread(t1).start();
    }
}