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 ...

Difference between double and float Java types. The key difference between a float and double in Java is that a double can represent much larger numbers than a float. Both data types represent numbers ...

Power Java DXML—A Second Generation XML Toolkit Kevin Wittmer Listing 3. Excerpts from the meta-file that specifies the Java data types of various elements declared in the keplerian_elements.dtd file.