What would happen on compiling and running the following code?

 public class Test
 {
     public static void main (String args[])
     {
     TestThread t = new TestThread ();
     t.setValue (5);
     t.start ();
     t.setValue (10);
     }
 }
class TestThread extends Thread
     {
     private int value;
     synchronized public void setValue (int v)
     {
         value = v;
     }
     public void run ()
     {
     System.out.println ("before: " + value);
     setValue (50);
     System.out.println ("after: " + value);
     }
 }

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