java playground - tell me output?

SP13.java

public class SP13 {

    static class R extends Thread {
        @Override
        public synchronized void start() {
            System.out.println("in start, t:" + Thread.currentThread().getName());
        }

        @Override
        public void run() {
            System.out.println("in run, t:" + Thread.currentThread().getName());
        }
    }
    public static void main(String[] args) {
        R r = new R();
        r.start();
    }
}