For example, suppose package physics contains a Math class that’s identical to java.lang‘s Math class in that it implements the same PI constant and trigonometric methods.

Hi! I'm making a game for Android using Java and the Libgdx engine. However, I want the code to be independent of the engine, and so am wrapping any references to Libgdx in its own class. For ...

(Math is part of Java’s standard class library. I’ll discuss this class and these methods in a future article.) Performance trick. Because performance is important to graphics applications, ...