In this tutorial, we will learn about Java interfaces, how to implement them, and when to use them. In Java, an interface defines a set of attributes that other classes must implement. For example, Polygon…

In this tutorial, you will learn how to work with Inner and Nested classes in Java. In Java, you can define one class in another. This class is known as the Nested class. class OuterClass {…

In this tutorial, you will learn to use two selections of If Commands: if and if… else to control the program execution flow. In programming, executing a particular code is often desirable based on whether…

In this tutorial, you will learn to use the switch Command to control the flow of your program. In Java, the if..else..if ladder executes code from many blocks.  The switch Command can replace long ladders…

In Java, there is another form of loop (in addition to the standard for loop) for working with arrays and sets. If you are working with arrays and sets, you can duplicate their items using…

Loops are used in programming to repeat a specific block of code. In this tutorial, you will learn to use the while and do… while loops in Java programming. Repeat a loop until a specific condition…

In this tutorial, you will learn to use a break in Java to end a loop. Suppose you are working with circles. Sometimes, you need to skip some commands inside the loop or end the loop…

This tutorial teaches you to use the continue Command in Java. The continue statement causes the current iteration to continue. Suppose you are working with circles. Sometimes, you want to skip some commands inside or…