/** addAndGet adds given value to current, and returns current value */
public void testAddAndGet() {
AtomicLong ai = new AtomicLong(1);
assertEquals(3, ai.addAndGet(2));
assertEquals(3, ai.get());
assertEquals(-1, ai.addAndGet(-4));
assertEquals(-1, ai.get());
}
public AtomicLong combine(AtomicLong x, AtomicLong y) {
// Not clear whether this is meaningful:
return new AtomicLong(x.addAndGet(y.get()));
}
