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.

Iterator objects don't store objects the way arrays and linked lists do. See how using a filtering Iterator class can help you avoid wasted memory and decreased performance.