// Rectangle.java
// A rectangle class with methods move and contains

public class Rectangle {
  
    // instance variables
    private int x0;
    private int y0;
    private int width;
    private int height;
  
    // constructors
    public Rectangle (int x, int y, int w, int h) {
        this.x0 = x;      // "this." is optional unless the parameter
        this.y0 = y;      //   has the same name
        this.width = w;
        this.height = h;
    }
  
    // instance methods
    public void move(int dx, int dy) {
        x0 += dx;
        y0 += dy;
    }
  
    public boolean contains(int x, int y) {
        return (x >= x0 && x <= x0 + width &&
                y >= y0 && y <= y0 + height);
    }
  
    public int getX() {
        return x0;
    }
  
    public int getY() {
        return y0;
    }
  
}