public class Balloon
{
   protected int maxRadius;
   protected int radius;
   protected boolean popped;

   protected Balloon()
   {
      maxRadius = 0;
      radius = 0;
      popped = false;
   }
   /**
    * Creates a balloon with given maximum radius; initially, the balloon is deflated (radius is zero) and is not popped.
    * @param max  maxium radius of the balloon
    */
   public Balloon(int max)
   {
      maxRadius = max;
      radius = max;
      popped = false;
   }

   public boolean equals(Balloon b)
   {
      boolean same = false;
      if (maxRadius == b.maxRadius && 
          radius == b.radius &&
          popped == b.popped)
      {
         same = true;
      }
      return same;
   }

   public String toString()
   {
      String result = "maxRadius: "+Integer.toString(maxRadius)+
                      " radius: "+Integer.toString(radius);
      if (popped)
      {
         result+=" popped";
      }
      else
      {
         result+=" not popped";
      }
      return result;
   }

   /**
    * Returns the current radius of this balloon
    */
   public int getRadius(){
      return radius;
   }
  
   /**
    * Increases the radius of the balloon by a specified amount causing it to pop if the radius is increased beyond the maximum radius (this method has no effect if the balloon is already popped).
    * @param amount the amount by which the to increse the radius
    */ 
   public void inflate(int amount){
      radius+=amount;
   }

   /**
    * Deflates the balloon without popping it (a deflated balloon has radius zero).0
    */
   public void deflate(){
      maxRadius = 0;
   }
   /**
    * Determines whether this balloon is popped.
    */
   public boolean isPopped(){
      return popped;
   }

   /**
    * Pops the balloon (a popped balloon has radius zero).
    */
   public void pop(){
      radius = 0;
   }
}