Java interfaces are different from classes, and it’s important to know how to use their special properties in your Java programs. This tutorial introduces the difference between classes and interfaces ...

The content of this java tutorial is designed, explained and demonstrated with examples by working java professionals who all have come together for a single purpose; to share their java experience ...

An interface is implicitly abstract. You do not need to use the abstract keyword when declaring an interface. Each method in an interface is also implicitly abstract, so the abstract keyword is not ...

The most significant addition to the Java language since Sun Microsystems rewrote the collections API for Java 5 is the introduction of Java records. Java records address two significant pain points ...

Obviously that doesn't compile, but I hate to make a file FooType.java with just the 5 lines above in it. Obviously that doesn't compile, but I hate to make a file ...

If you’ve read my Java 101 tutorial introducing static classes and inner classes, you should be familiar with the basics of working with nested classes in Java code. In this Java tip, you’ll learn ...