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

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

We could move all the code from the SliceablePerson class into PersistentPerson if we wanted to minimize the number of java source files and/or give the appearance of having a two level domain. The ...

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 ...

In Java, encapsulation basically translates to this simple guideline: “Don’t access your object’s data directly; use its methods.” That is an elementary idea, but it eases our lives as ...

UML is used as a representation of the Java programming language. Using sample class and sequence diagrams, you can see how UML conveys unambiguous code-mapping information to developers.

Java records example To demonstrate how a Java 17 record can help you create cleaner and simpler code, let's first start off with a standard, simple Java class that can identify a person's location, ...