How to put loop to repeat option in the menu

Abdalla Elawad

Hello Guys

please help me

I need to modify in the functionality of the this program , and put the control loop for the options in the menu display.

Thanks

import java.util.Scanner;

public class Area {

public static void main(String[] args){

int select;

Scanner sc=new Scanner(System.in);

System.out.println("Area Calculator");

System.out.println("Select your choice");

System.out.println("1.Square");

System.out.println("2.Rectangle");

System.out.println("3.Triangle");

System.out.println("4.circle");

select=sc.nextInt();

Area choice=new Area();

switch(select){

case 1:

choice.square();

break;

case 2:

choice.Rectangle();

break;

case 3:

choice.Triangle();

break;

case 4:

choice.circle();

break;

default:

System.out.println("Enter a valid command");

}

// Program to calculate the area of Square

void square(){

int area,s;

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

Scanner sc=new Scanner(System.in);

s=sc.nextInt();

area=s*s;

System.out.println("area of square ="+area);

}

// Program to calculate the area of Recatngle

void Rectangle(){

int area,l,b;

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

System.out.println("Enter the breadth of side");

Scanner sc=new Scanner(System.in);

l=sc.nextInt();

b=sc.nextInt();

area=l*b;

System.out.println("area of square ="+area);

}

// Program to calculate the area of Triangle

void Triangle(){

int area,h,b;

Scanner sc=new Scanner(System.in);

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

b=sc.nextInt();

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

h=sc.nextInt();

area=(h*b)/2;

System.out.println("area of Triangle ="+area);

}

// Program to calculate the area of Circle

void circle(){

int area,r;

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

Scanner sc=new Scanner(System.in);

r=sc.nextInt();

area=22/7*r*r;

System.out.println("area of circle ="+area);

}

2 Replies

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Abdalla Elawad8y ago
Not exactly solution see output : repaet the first ur selection

Area Calculator
Select your choice
1.Square
2.Rectangle
3.Triangle
4.circle
5.Exit
2
Enter the length of side
Enter the breadth of side
2
2
area of square =4
Enter the length of side
Enter the breadth of side
2
2
area of square =4
Enter the length of side
Enter the breadth of side
2
2
area of square =4
Laxmidhar Sahoo8y ago
sir for contineu take the options in do ---while loop like bellow
public static void main(String[] args){
int select;
Scanner sc=new Scanner(System.in);
System.out.println("Area Calculator");
System.out.println("Select your choice");
System.out.println("1.Square");
System.out.println("2.Rectangle");
System.out.println("3.Triangle");
System.out.println("4.circle");
System.out.println("5.Exit");
select=sc.nextInt();
boolean ext = true;

Area choice=new Area();
do
{
switch(select){
case 1:
choice.square();
break;
case 2:
choice.Rectangle();
break;
case 3:
choice.Triangle();
break;
case 4:
choice.circle();
break;
case 5:
ext = false;
break;
default:
System.out.println("Enter a valid command");
}while(ext);
}
}