Hi please oblige and review the following changes http://cr.openjdk.java.net/~msheppar/8025211/webrev/ which address the issue raised in the bug https://bugs.openjdk.java.net/browse/JDK-8025211
an intermittent failure occurs on some windows test machines.this replaces a Thread.sleep(5000) with explicit synchronization between sender
and receiver via a CountDownLatch regards Mark
