What is the result of this code(wait and time)? : Questions « Thread « SCJP

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public class MainClass{
    public static void main(String[] argv) throws Exception{
      a();
    }
    public static void a() throws
     InterruptedException {
        Thread t = new Thread();
        t.start();
        System.out.print("X");
        t.wait(10000);
        System.out.print("Y");
    }
}