Starting with JDK 1.1, Java provided the ability to create nested classes. A nested class is defined inside another class. There are two types of nested classes: static nested classes and inner ...

Historically, Sun tried very hard to avoid such changes: Java 1.1 introduced inner classes, Java 1.4 introduced “assert”, and beyond that the language was the same language we’d been using ...

Anonymous inner classes are mostly used for event handling in Java. However they can also prove useful for debugging purposes. This article explains how anonymous inner classes can be used for ...

If the thing inside the parentheses is also a class, it becomes an inner class. Java has supported inner classes since version 1.1.

As such, you can incorporate the functional Consumer interface into your code simply by creating a class that implements java.util.function.Consumer, or by coding an inner class. Here is the Java code ...