Here's how to make classes, fields, methods, constructors, and objects work together in your Java programs.

Learn to use method overriding and abstract classes to achieve dynamic polymorphism in Java, a feature that allows different implementations of the same method.

Get a deep dive into using method references in your Java programs, including stream operations, event listeners, and constructors and factories.

Learn about three common methods to create hierarchical structures in Java: nested classes, composite pattern, and tree data structure. Compare their pros and cons and choose the best one.

Developers who create a runnable Java class, be it for a ‘Hello World’ demonstration or to kick off a fully featured enterprise application, will enjoy the following technical benefits when using ...

Java Java is a general-purpose programming language that is class-based, object-oriented, and designed to have as few implementation dependencies as possible.

chapter02-task21 Add to the HighArray class from the highArray.java program (Listing 2.3) a getMax() method that returns the highest key value in the array or -1 if the array is empty. Add code to ...

Java Console class input and ouput The easiest way to garner user input in a Java program is to use the System’s Console class. Introduced in Java 6, Java’s System Console class provides two simple ...

A federal judge threw out a small part of Oracle's Java lawsuit against Google on Thursday but allowed the bulk of the case to proceed.

That three percent included packages, methods, and class names. But those declarations—like starting a function with package java.lang —can only be used in certain ways.