public class RectangleB {
     private double myHeight;
     private double myWidth;

     public RectangleB (double height, double width) {
         myHeight = height;
         myWidth = width;
     }   

     public double GetHeight() {
         return myHeight;
     }   

     public double GetWidth() {
         return myWidth;
     }   

     public double GetArea() {
         return myWidth*myHeight;
     }   

     public double GetPerimeter() {
         return 2*(myWidth + myHeight);
     }   
}

RectangleBMain.java:

public class RectangleBMain {

    /**
     * Constructor.
     */  
    public RectangleBMain () {
    }

    public static void main(String args[]) {
        RectangleB aRect = new RectangleB(5.0, 2.0);
        System.out.println("The rectangle has a perimeter of " + aRect.GetPerimeter());
        System.out.println("The rectangle has an area of " + aRect.GetArea());
    }
}