JAVA – Class – Constructor Plus Static Method

The main method in Hello.java is as shown below. Define the class Counter.java by filling in the code so that the program accepts a positive integer value X and prints twice the value of X.

import java.util.Scanner;
public class Hello {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int x = sc.nextInt();
        Counter ctr=null;
        for(int i=1; i <= x; i++){
            ctr = new Counter();
        }
        System.out.println(ctr.getCounter());
    }
}

Example Input/Output 1:
Input:
5

Output:
10

Example Input/Output 2:
Input:
55

Output:
110

public class Counter{
    static int var=0;
    Counter(){
        var++;
    }
    public int getCounter(){
        return var*2;
    }
}