Point.java

/**
 *  
 * @author Stephanie Engelhardt
 *
 */

public class Point implements Comparable<Point>{
	private int x; 
	private int y;
	
	public Point(){ //default constructor 
		// x and y get default value 0
	}
	
	public Point(int x, int y){
		this.x = x;  
		this.y = y;   
	}
	
	public Point(Point p) { // copy constructor
		x = p.getX();
		y = p.getY();
	}

	public int getX()   {
		return x;
	}
	
	public int getY(){
		return y;
	}
	
	@Override
	public boolean equals(Object obj){
		if (obj == null || obj.getClass() != this.getClass()){
			return false;
		}
    
		Point other = (Point) obj;
		return x == other.x && y == other.y;   
	}

	/**
	 * Compare this point with a second point q in the left-to-right order. 
	 * @param 	q 
	 * @return  -1  if this.x < q.x || (this.x == q.x && this.y < q.y)
	 * 		    0   if this.x == q.x && this.y == q.y 
	 * 			1	otherwise 
	 */
	public int compareTo(Point q){
		if(q.getX()==this.x && q.getY()==this.y)
			return 0;
		else if(this.getX()<q.getX()||(this.getX()==q.getX() && this.getY() < q.getY()))
			return -1;
		else
			return 1;
	}
	
	
	/**
	 * Output a point in the standard form (x, y). 
	 */
	@Override
    public String toString() {
		return "("+x+","+y+")"; 
	}
}