Unless a nested class is declared as a static member of its enclosing class, an instance of the enclosing class must exist before the nested class can be instantiated.

Learn how to use the four types of nested classes to better organize your Java code.

How does the open-closed SOLID principle work in a Java program? Here we show you what this important principle means, and how to implement the open-closed principle in Java.

Students have created a custom interface to use across a software package Students have implemented two unrelated classes that implement the same interface Students have implemented a nested class ...