In Java, nested classes are categorized as either static member classes or inner classes. Inner classes are non-static member classes, local classes, or anonymous classes.

Here's how to make classes, fields, methods, constructors, and objects work together in your Java programs.

Java developers have a choice for iterating collection of objects. Here's why the Java Iterator vs. Enumeration debate is all about the Iterator.

Developers can choose between fail-fast and fail-safe iterators in Java. Here we compare and contrast the two so you'll know which will fit your situation.