Question

Write a program in java that uses methods to input data for calculation, calculate, and display the results of the calculations. That is, there are at least three methods. The problem is to write a program that calculates the area of a rectangle. This action should be repeatable.

Answer 1

import java.util.Scanner;

public class Rectangle {
   public static void main(String[] args) {
       Scanner sc = new Scanner(System.in);
       int lenth=getInput("Enter length",sc);
       int width=getInput("Enter width",sc);
       int area=getArea(lenth,width);
       displayArea(area);
   }

   //prints the area
   private static void displayArea(int aArea) {
       System.out.println("Area : "+aArea);
   }

   //calcualtes the area
   private static int getArea(int aLenth, int aWidth) {
       return aLenth * aWidth;
   }

   // read input and return
   private static int getInput(String aString, Scanner sc) {
       System.out.println(aString);
       return sc.nextInt();
   }

}

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