Count 1's in binary number

gistfile1.java

public class Weekly02 {
    
    public static void main (String args[]){
        Scanner scanner = new Scanner(System.in);
        int arraySize = scanner.nextInt();
        int mask = 1;
        for(int x=0; x<arraySize; x++){
            int i = scanner.nextInt();
            int counter = 0;
            do {
                if((i & mask) == 1){ counter++; }
                i >>>= 1;
            } while (i != 0);
            System.out.print(counter);
            System.out.print(" ");
        }
    }
}