Do you need to know how to sort Java objects in a collection, array, or map? Here's how to use the Comparable and Comparator interfaces and avoid ClassCastExceptions.

What is the contract between equals() and hashcode()? Learn how these methods work together when comparing objects in Java.

Loitering Objects and Java Framework Design By Leonard Slipp February 5, 2001 ONE OF THE key objectives early in the design of Java was to create an environment that eliminated the memory management ...

The traditional way to implement Java is a two-step process: a translation phase and an execution phase. (In this respect Java is like C.) A Java program is compiled by javac, which produces one or ...

Gil Tene introduces org.ObjectLayout, a new Java package designed specifically to enable JVMs to optimize memory layout for arrays and objects in a way that closely matches the performance ...

There are many ways to write a Java String palindrome program. In this Java palindrome example we demonstrate recursion and how the use of loops, arrays, Scanner and the reverse method can improve ...

Java array size and length Here are the most important concepts developers must know when they size Java arrays and deal with a Java array’s length: The theoretical maximum Java array size is ...

Spacing of Output in Java. Java programs without a graphical user interface use a computer's command line to interact with the user. It is vital that the program's command line output is properly ...