public void test(TestHarness th) { LogRecord rec1 = new LogRecord(Level.CONFIG, "msg"); LogRecord rec2 = new LogRecord(Level.CONFIG, "msg2"); long s1, s2; s1 = rec1.getSequenceNumber(); s2 = rec2.getSequenceNumber(); /* Check #1. * * It could happen that rec1 has a sequence number of * Long.MAX_VALUE, or that rec1's sequence number is close to * Long.MAX_VALUE and some background threads have created a few * LogRecords between the creation of rec1 and rec2, so rec2's * sequence number is equal to or slightly greater than * Long.MIN_VALUE. In these cases, s2 would not be greater than * s1, although the implementation of java.util.logging.LogRecord * was entirely correct. * * While this event is extremely unlikely, it is not entirely * impossible, so we can perform the subsequent check only if * there was no arithmetic overflow. */ if ((s1 >= 0) == (s2 >= 0)) th.check(s2 > s1); else th.check(true); // Check #2. rec2.setSequenceNumber(42); th.check(rec2.getSequenceNumber() == 42); // Check #3. rec2.setSequenceNumber(s2); th.check(rec2.getSequenceNumber() == s2); }