Program To Demonstrate This Keyword To Find Area Of Rectangle
How to use the this keyword in Java ?.
The this keyword is a special keyword frequently used in the Java programming language.Usually, this keyword is used when we want to refer currently executing object.Here this keyword is the reference to a calling object itself.When a object calls a method also called as Instance method, it has variable this which refers to object which has called it.By using this keyword you can refer or access to any field of a particular object in a method or constructor.Whenever an instance method or constructor is called this keyword is set to a variable holding reference to a object who has called it.
package com.hubberspot.this.example;
class Rectangle{
private int length;
private int breadth;
Rectangle(int length){
this.length = length;
}
Rectangle(int length, int breadth){
this(length);
this.breadth = breadth;
}
public int area(){
return (length*breadth);
}
}
public class ThisTest {
public static void main(String [] args){
Rectangle rect = new Rectangle(5,5);
System.out.println("The Area of rectangle is : "+
+ rect.area());
}
}
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