Description of Balloon Things:

(1) a balloon has:

  - color    (a string)
  - size     (a number)
  - position (two numbers)




(2) a balloon can be created:




  - by giving values for
    all of its properties






  - by giving values for
    some of its properties
    and setting others to
    chosen default values


(3) a balloon can do:



  - tell us its color




  - tell us its size




  - tell us its X location




  - tell us its Y location




  - move away by some
    given amounts



  - draw itself based on
    its location, size, color

package cs1.ParkApp;

import cs1.app.*;

public class Balloon
{
    // the section for the "features/characteristics" ( the data members )
    
    private String color;
    private double size;
    private double curX;
    private double curY;
    
    // the section for the constructors ( special methods )
    // * can have as many as needed
    // * must have same name as the class
    // * no return type (not even void)

    public Balloon( String initColor, double initSize, double initX, double initY )
    {
        color = initColor;    // set each "feature" to what user specified
        size = initSize;
        curX = initX;
        curY = initY;
    }
    
    public Balloon( String initColor, double initSize )
    {
        color = initColor;
        size = initSize;
        curX = canvas.getRandomDouble( 0, canvas.getWidth() );
        curY = canvas.getHeight() / 2;
    }
        
    // the section for the "actions/behaviors" ( the methods )
        
    public String getColor( )
    {
        return color;
    }
   
    public double getSize( )
    {
        return size;
    }
   
    public double getX( )
    {
        return curX;
    }
   
    public double getY()
    {
        return curY;
    }
   
    public void drift( int dx, int dy )
    {
        curX = curX + dx;     // update location based
        curY = curY + dy;     // on the given amounts
    }
   
    public void draw( )
    {
        canvas.drawCircle( curX, curY, size, color );
    } 
}