Java Shapes Pro

Java Program to Calculate Area of Rectangle

import java.util.Scanner;

class AreaOfRectangle 

{

 public static void main (String[] args)

{

      Scanner scanner = new Scanner(System.in);

      System.out.println("Enter the length of Rectangle:");

      double length = scanner.nextDouble();

      System.out.println("Enter the width of Rectangle:");

      double width = scanner.nextDouble();

      Area = length*width;

      double area = length*width;

      System.out.println("Area of Rectangle is:"+area);

   }

}

Java program to calculate area of Square

import java.util.Scanner;

class SquareAreaDemo 

{

 public static void main (String[] args)

 {

       System.out.println("Enter Side of Square:");

       Scanner scanner = new Scanner(System.in);

       double side = scanner.nextDouble();

       double area = side*side; 

       System.out.println("Area of Square is: "+area);

   }

}

Java program to calculate area of Triangle

import java.util.Scanner;

class AreaTriangleDemo 

{

public static void main(String args[]) 

{   

      Scanner scanner = new Scanner(System.in);

                System.out.println("Enter the width of the Triangle:");

      double base = scanner.nextDouble();

                System.out.println("Enter the height of the Triangle:");

      double height = scanner.nextDouble();

                Area = (width*height)/2

      double area = (base* height)/2;

      System.out.println("Area of Triangle is: " + area);      

   }

}

Java Program to calculate area and circumference of circle

import java.util.Scanner;

class CircleDemo

{

 static Scanner sc = new Scanner(System.in);

 public static void main(String args[])

{

      System.out.print("Enter the radius: ");

      double radius = sc.nextDouble();

      Area = PI*radius*radius

      double area = Math.PI * (radius * radius);

      System.out.println("The area of circle is: " + area);

      Circumference = 2*PI*radius

      double circumference= Math.PI * 2*radius;

      System.out.println( "The circumference of the circle is:"+circumference) ;

   }

}