A causal loop is a classic time travel conundrum. If you send information to the past – say, you give Albert Einstein the formula E=mc ² before he theorises it himself, then he publishes it and you go ...

Complete your tour of JDK 5’s language features by exploring autoboxing and unboxing, the enhanced for loop, static imports, varargs, and covariant return types. This article wraps up my three-part ...