Thread: can someone tell me if this looks right??

these are the instructions that i was given

Write a program that calculates the area of a circle from its radius. The radius will be an integer entered via the keyboard.
Use this formula : area = PI * radius2
You will need to use the constant PI which you get by using Math.PI
A sample run would look like this :
Enter radius : 3
The radius is : 3
The area is : 28.274333882308138

when i try to run the program nothing happens??

cross posted, thanks
can someone tell me if my program looks right?? - Java Forums

import java.util.Scanner;
 
public class Assign1_Roberts{
	public static void main(String[]args){
		Scanner input = new Scanner(System.in);
		//Prompt the user for input
		final double PI = 3.14159;//Declare a constant
 
		//Assign a radius
		double radius = input.nextInt();
 
		//Compute area
		double area = radius * radius * PI;
 
		System.out.println("Enter radius :" + input.nextInt());
		System.out.println("The radius is : " + radius);
		System.out.println("The area is: " + area);
 
	}
}

//Assign a radius
double radius = input.nextInt();

In this line you are asking for input from the user.

//Compute area
double area = radius * radius * PI;

in this line you are calculating the area.

System.out.println("Enter radius :" + input.nextInt());

If you have already taken radius as input , then why you are asking for input in this line too.

+Rep for pointing out the cross post.