Circumference of a circle using methods

 import java.util.*;

// CIRCUMFERENCE OF A CIRCLE

public class p4 {

    static float circumference(int r) {

        float circumference = 2 * 3.14f * r;

        return circumference;

    }

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        System.out.println("Enter radius:");

        int r = sc.nextInt();

        System.out.println("Circumference of the circle is:" + circumference(r));

    }

}