Covariance and contravariance might seem esoteric, but you'll need these concepts more than ever as the Java language evolves. Get started with type dependency in array types, generic types, and ...

Take your coding to the next level by learning advanced programming with generics. Here's how to use generic methods with type inference, type parameters, and wildcards in your Java programs.

Casting down to a smaller data type is an unsafe cast because it has the potential for losing precision. However, most Java developers are rarely satisfied without being told why, so despite the fact ...