Wall Area

public class Wall {

    public static void main(String args[])  {

    
        private double width;
        private double height;
    
        public Wall() {
        
        }
    
        public Wall(double width, double height) {
            if (width < 0) {
                this.width = 0;
            } else {
                this.width = width;
            }
        
            if (height < 0) {
                this.height = 0;
            } else {
                this.height = height;
            }

        
        }
    
        public double getWidth () {
            return width;
        }
    
        public double getHeight () {
            return height;
        }
    
        public void setWidth (double width) {
            this.width = width;
            if (width < 0) {
                this.width = 0;
            }
        }
    
        public void setHeight (double height) {
            this.height = height;
            if (height < 0) {
                this.height = 0;
            }
        }
    
        public double getArea () {
            double area = this.width * this.height;
            return area;
        }

    }
    
}