Use Java assertions to test your assumptions about program correctness and check them in your code.

Generics make your code more flexible and easier to read, and they help you avoid ClassCastExceptions at runtime. Get started with this introduction to using generics with the Java Collections ...

This post explains how to use classes in Java to build objects and organize your code. Also learn: constructors, static methods, and more!

Character.getNumericValue(aChar) will let me convert a char into an int. I want to know how I can reverse the process and get a char from an integer? Thanks.