Does this program below indicate to you that there's a bug in java's do
loop. Or is it just one of those many traps that I've fallen into and
I've only got myself to blame? I was expecting the two loops would
behave much the same. Have I been bitten by the optimizer?

public class DoLoopBug {
  public static void main( String[] args ) {
     int retryCnt = 0;
     doLoop1: do {
        try {
           if (retryCnt < 3)
              throw new java.net.ConnectException();
           break;
        }
        catch (Exception e) {
           System.out.println( "caught exception; retryCnt=" +
retryCnt );
           if (++retryCnt < 20)
              continue doLoop1;
        }
     } while (false);

     System.out.println( "after doLoop1, retryCnt = " + retryCnt +
"\n" );

     retryCnt = 0;

     doLoop2: do {
        try {
           if (retryCnt < 3)
              throw new java.net.ConnectException();
           break;
        }
        catch (Exception e) {
           System.out.println( "caught exception; retryCnt=" +
retryCnt );
           if (++retryCnt < 20)
              continue doLoop2;
        }
     } while (true);  // Here's difference from DoLoop1

     System.out.println( "after doLoop2, retryCnt = " + retryCnt );
  }
}