If you are fortunate enough to be using JDK 7, the newly available Objects class is the obvious (at least to me) choice for implementing the “common” Java object ...

Java’s equals() and hashcode() are two methods that work together to verify if two objects have the same value. You can use them to make object comparisons easy and efficient in your Java programs. In ...

public boolean equals(Object obj) Indicates whether some other object is "equal to" this one. The equals method implements an equivalence relation on non-null object ...

This article explains Chapter 13, "Strings and Regular Expressions," from "THE Java™ Programming Language, Fourth Edition." In the Java programming language, strings are standardly handled as String ...