Java Tutorial #30 - Interface in Java Programming (Examples)
Java Tutorial #30 - Interface in Java Programming
In this video by Programming for Beginners we will learn Interface in Java Programming, using Java Tutorial videos.
An interface is a fully abstract class. It includes a group of abstract methods (methods without a body).
Like abstract classes, we cannot create objects of interfaces.
To use an interface, other classes must implement it. We use the implements keyword to implement an interface.
Example:
interface Polygon {
void getArea(int length, int breadth);
}
// implement the Polygon interface
class Rectangle implements Polygon {
// implementation of abstract method
public void getArea(int length, int breadth) {
System.out.println("The area of the rectangle is " + (length * breadth));
}
}
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We can learn Java Programming language to make web applications or mobile applications for android phones and several other applications for windows, Mac OS and Unix operating systems. Also we can make android applications using Java programming. The concepts covered will be related to basic java and core java that will help you in your next interview questions. You can use any version of Java but all concepts will be same for all java versions. I will be using Java SE 8.
Java is a high-level programming language. Java runs on a variety of platforms, such as Windows, Mac OS, and the various versions of UNIX.
Java is a MUST for students and working professionals to become a great Software Engineer specially when they are working in Software Development Domain.
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