// Name:     Bradley Shedd
// Program:  Quiz#1
// Date:     October 6, 2010
// Class:    Java1302
// Filename: Rectangle.java   
   
   
   
    public class Rectangle
   {
      private float length;
      private float width;
  
       public Rectangle()
      {
         length = 1.0f;
         width = 1.0f;
      }
  
       public Rectangle( float newLength, float newWidth)
      {
         setLength (newLength);
         setWidth (newWidth);
      }
  
       public float calculatePerimeter()
      {
         if ( length !=0.0 && width != 0.0)
            return (length + width) * 2;
         else
            return 0.0f;
      }
  
       public float calculateArea()
      {
         if ( length !=0.0 && width != 0.0 )
            return length * width;
         else
            return 0.0f;
      }
  
       public float getLength()
      {
         return length;
      }
  
       public float getWidth()
     {
         return width;
      }
 
       public void setLength( float newLength )
      {
         if ( newLength > 0.0 && newLength < 20.0)
            length = newLength;
         else
         {
        
            System.out.println( "Length can't be negative or larger than 20." );
         }
      }
  
       public void setWidth( float newWidth )
      {
         if ( newWidth > 0.0 && newWidth < 20.0 )
            width = newWidth;
         else
         {
            System.out.println( "Width can't be negative or larger than 20." );
         }
      }
  
       public String toString()
      {
         return "Length:\t" + length +
            "\nWidth:\t" + width +
            "\nPerimeter:\t" + this.calculatePerimeter() +
            "\nArea:\t" + this.calculateArea();
      }
  
       public boolean equals ( Object a1 )
      {
         if ( ! ( a1 instanceof Rectangle))
            return false;
         else
         {
            Rectangle rec1 = ( Rectangle ) a1;
            return Math.abs( calculateArea () - rec1.calculateArea()) < 0.0001;
         }
      }
   }

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