Untitled


public class Example {
 private float radius;
 private float area;
 private float b;

 public static void main(String[] args) {
    int y = 1;
    Example[] obj = new Example[5];
    int x = 0;

   while(x&lt;5){
       obj[x] = new Example();
       [x].radius = y;
        y = y*2;
       obj[x].area = obj[x].find(obj[x].radius);
       System.out.println(" Radius " + obj[x].radius+ " Area " + obj[x].area);
        x = x + 1;
    }
}
  public float find(float rad){
   b = 3.14f * rad * rad;
  return b;
  }
}


Output:

Radius 1.0 Area 3.14
Radius 2.0 Area 12.56
Radius 4.0 Area 50.24
Radius 8.0 Area 200.96
Radius 16.0 Area 803.84