Wall.java

package com.example.app;

public class Wall {

    private double width;
    private double height;



    public Wall() {
        this.width = 0;
        this.height = 0;
    }

    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 this.width;
    }

    public void setWidth(double width) {
        if(width < 0){
            this.width = 0;
        }else{
            this.width = width;
        }
        
    }

    public double getHeight() {
        return this.height;
    }

    public void setHeight(double height) {
        if(height < 0){
            this.height = 0;
        }else{
            this.height = height;
        }
    }

    public double getArea(){
        return this.width * this.height;
    }
}