while loop in java

package ifelse;

public class Thenaliraman {
   public static void main(String[] args) {
    int whip_bit=1024;
    int count=0;
while(whip_bit>1) {
    whip_bit=whip_bit/2;
    count++;
    System.out.println( whip_bit);

}
System.out.println("total person:" + count);

}
}

//output:
512
256
128
64
32
16
8
4
2
1
total person:10

package ifelse;
public class Number {
    public static void main(String[] args) {
        int a = 3;
        int count = 1;

        while (count <= 10) {
            int b =count * a;
            System.out.println(count + " * " + a + " = " +b);
            count=count+1;
        }
    }
}

output:
   1 * 3 = 3
2 * 3 = 6
3 * 3 = 9
4 * 3 = 12
5 * 3 = 15
6 * 3 = 18
7 * 3 = 21
8 * 3 = 24
9 * 3 = 27
10 * 3 = 30

package ifelse;

public class Number1 {
    public static void main(String[] args) {
        int a=100;
        int b=120;
        int count=1;
    while(count<=a && count<=b) {
        if(a%count==0 && b%count==0) {
        System.out.println("common divisible numbers:"+ count);
        }
        count++;
    }
    }


    }


     output:

          common divisible numbers:1
          common divisible numbers:2
          common divisible numbers:4
          common divisible numbers:5
          common divisible numbers:10
          common divisible numbers:20