Java Program Example to Calculate perimeter of Rectangle

Calculate Rectangle Perimeter using Java Example This Calculate Rectangle Perimeter using Java Example shows how to calculate perimeter of Rectangle using it's length and width.
Output of Calculate Rectangle Perimeter using Java Example would be
Please enter length of a rectangle 10
Please enter width of a rectangle 15
Perimeter of a rectangle is 50

 import java.io.BufferedReader;  
 import java.io.IOException;  
 import java.io.InputStreamReader;  
 public class CalculateRectPerimeter {  
     public static void main(String[] args) {  
         int width = 0;  
         int length = 0;  
         try  
         {  
             //read the length from console  
             BufferedReader br = new BufferedReader(new InputStreamReader(System.in));  
             System.out.println("Please enter length of a rectangle");  
             length = Integer.parseInt(br.readLine());  
             //read the width from console  
             System.out.println("Please enter width of a rectangle");  
             width = Integer.parseInt(br.readLine());  
         }  
         //if invalid value was entered  
         catch(NumberFormatException ne)  
         {  
             System.out.println("Invalid value" + ne);  
             System.exit(0);  
         }  
         catch(IOException ioe)  
         {  
             System.out.println("IO Error :" + ioe);  
             System.exit(0);  
         }  
         /*  
          * Perimeter of a rectangle is  
          * 2 * (length + width)  
         */  
         int perimeter = 2 * (length + width);  
         System.out.println("Perimeter of a rectangle is " + perimeter);  
     }  
 }  
 

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