code: @SuppressWarnings("unchecked") @Test public void testExecuteExceptionRunnable() throws Exception {
    ServiceExecutor executor=new StampedLockServiceExecutor();
    ExceptionRunnable<Exception> executeTask=mock(ExceptionRunnable.class);
    executor.execute(executeTask);
    verify(executeTask).run();
    reset(executeTask);
    doThrow(new Exception()).when(executeTask).run();
    try {
      executor.execute(executeTask);
      fail("Should have thrown an exception");
    }
   catch (  Exception e) {
      assertNotNull(e);
    }
    reset(executeTask);
    Runnable closeTask=mock(Runnable.class);
    executor.close(closeTask);
    verify(closeTask).run();
    reset(closeTask);
    executor.close(closeTask);
    verify(closeTask,never()).run();
    executor.execute(executeTask);
    verify(executeTask,never()).run();
  }
  