Classes, fields, methods, constructors, and objects are the building blocks of object-based Java applications. This Java tutorial teaches you how to declare classes, describe attributes via fields ...

Classes and objects in Java must be initialized before they are used. You’ve previously learned that class fields are initialized to default values when classes are loaded, and that objects are ...

However, the Java Platform provides a data structure that greatly simplifies the use of reference objects like this, called the java.util.WeakHashMap class. WeakHashMap works exactly like a hash ...

Of course, Java object serialization is only half of the job. The other half is Java object deserializtion, which we accomplish with the FileInputStream and the ObjectInputStream. The first step to ...

Instances are the foundation of object-oriented programming. Static methods are ones that aren't passed in any instance variables. As such, if you move static methods and static variables into a ...

Making object-to-relational maps happen. By Rich Seeley; May 5, 2003; The table views of the relational world and the object views of Java programming often clash as developers seek to build working ...