7. Length and breadth of a rectangle are 5 and 7 respectively. Write a program to calculate the area and perimeter of the rectangle.

 public class Main {

      public static void main(String[] args) {

          int length = 5;

          int breadth = 7;

          int area = length * breadth;

          int perimeter = 2 * (length + breadth);

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

          System.out.println("The perimeter is : " + perimeter);

     }

}

NOTE:

• Didn't need Scanner because there was no need to take input from the user.
• Used int because there was no decimal in input.
• To calculate area and perimeter we need length and breadth which is provided to us as input. 
• Used int to calculate as we didn't need decimal point in our output for now.