Question

Use Java program

Material Covered : Loops & Methods

Question 1: Write a program to calculate rectangle area. Some requirements:

1. User Scanner to collect user input for length & width

2. The formula is area = length * width

3. You must implement methods getLength, getWidth, getArea and displayData

▪ getLength – This method should ask the user to enter the rectangle’s length and then return that value as a double

▪ getWidth – This method should ask the user to enter the rectangle’s width and then return that value as a double

▪ getArea – This method should accept height and width as arguments, and return the rectangle’s area

▪ displayData – This method should accept height, width and area as arguments, and display the area with appropriate message on screen.

Question 2: Even/ Odd Counter

Write a program which has a method to check whether a number entered by the user is even or odd. Make sure you are using method evenOddCounter(). Ask user if they want to play again (Y/N)? if user types Y then the program should ask for next input and continue the program. However, if user types N then your program should stop execution.

Answer 1

Question 1

Program

import java.util.Scanner; //importing Scanner class
public class Main
{
static Scanner sc=new Scanner(System.in); //creating Scanner Object
static double getLength(){ //getLength method
System.out.print("Enter the length:");
double length=sc.nextDouble();
return length;
}
static double getWidth(){ //getWidth method
System.out.print("Enter the Width:");
double width=sc.nextDouble();
return width;
}
static double getArea(double length,double width){ //getArea method
double area=length*width;
return area;
}
static void displayData(double length,double width,double area){ //displayData method
System.out.println("Length of the rectangle:"+length);
System.out.println("Width of the rectangle:"+width);
System.out.println("Area of the rectangle:"+area);
}
   public static void main(String[] args) {
   //calling the methods
double l=getLength();
double w=getWidth();
double area=getArea(l,w);
displayData(l,w,area);
  
   }
}

Screenshot of the program

1 ها ہ import java.util.Scanner; //importing Scanner class 2 public class Main 3 -{ 4 static Scanner sc=new Scanner(System.in); //creating Scanner Object 5 static double getLength(){ //getLength method 6 System.out.print("Enter the length:"); 7 double length=sc.nextDouble(); 8 return length; 9 10 static double getWidth(){ //getWidth method 11 System.out.print("Enter the Width:"); 12 double width=sc.nextDouble();|| 13 return width; 14 15 static double getArea(double length, double width){ //getArea method 16 double area=length*width; 17 return area; 18 19 static void displayData(double length, double width, double area){ //displayData method 20 System.out.println("Length of the rectangle:"+length); 21 System.out.println("Width of the rectangle:"+width); 22 System.out.println("Area of the rectangle: "+area); 23 } 24 public static void main(String[] args) { 25 //calling the methods 26 double l=getLength(); 27 double w=getWidth(); 28 double area=getArea(1,w); 29 displayData(1,w, area); 30 31 } 32 } 33 ها

Output

Enter the length:6 Enter the Width:7 Length of the rectangle:6.0 Width of the rectangle:7.0 Area of the rectangle:42.0

Question 2

Program

import java.util.Scanner; //importing Scanner class
public class Main
{
static Scanner sc=new Scanner(System.in); //creating Scanner Object
static void evenOddCounter(int num){ //evenOddCounter method
if(num%2==0)
System.out.println(num+" is even");
else
System.out.println(num+" is odd");
}
   public static void main(String[] args) {
   int num;
   String ch;
   do{
System.out.print("Enter the number:");
num=sc.nextInt();
evenOddCounter(num);
System.out.print("Do you want to play again (Y/N)? ");
ch=sc.next();
   }while(ch.equals("Y"));
  
   }
}

Screenshot of the program

1 import java.util.Scanner; //importing Scanner class 2 public class Main 3 - { 4 static Scanner sc=new Scanner(System.in); //creating Scanner Object 5 static void evenoddCounter(int num){ //evenoddCounter method 6 if(num%2==0) 7 System.out.println(num+" is even"); 8 else 9 System.out.println(num+" is odd"); 10 } 11 public static void main(String[] args) { 12 int num; 13 String ch; 14 do{ 15 System.out.print("Enter the number:"); 16 num=sc.nextInt(); 17 evenoddCounter(num); 18 System.out.print("Do you want to play again (Y/N)? "); 19 ch=sc.next(); 20 }while(ch.equals("Y"));|| 21 22 23 } 24 w

Output

Enter the number: 6 6 is even Do you want to play again (Y/N)? Y Enter the number: 78 78 is even Do you want to play again (Y/N) ? Y Enter the number:23 23 is odd Do you want to play again (Y/N)? N

If you find these answers useful , please rate positive, thankyou