[명품JAVA프로그래밍] 5장 실습문제 6번

class Point {
	private int x,y;
	public Point(int x,int y) {this.x = x; this.y = y;}
	public int getX() {return x;}
	public int getY() {return y;}
	protected void move(int x,int y) {this.x= x; this.y = y;}
}

public class ColorPoint extends Point {
	private String color;
	public ColorPoint(int x, int y,String color) {
		super(x, y);
		this.color = color;
	}
	
	public ColorPoint() {
		super(0,0);
		color = "BLACK";
	}

	void setXY(int x, int y) {
		move(x,y);
	}
	
	void setColor(String color) {
		this.color = color;
	}
	
	public String toString() {
		return color+"색의 "+"("+getX()+","+getY()+")";
	}

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		ColorPoint zeroPoint = new ColorPoint();
		System.out.println(zeroPoint.toString()+"입니다.");
		
		ColorPoint cp = new ColorPoint(5,5,"YELLOW");
		cp.setXY(10,20);
		cp.setColor("RED");
		String str = cp.toString();
		System.out.println(str+"입니다.");
	}

}

결과

BLACK색의 (0,0)입니다.
RED색의 (10,20)입니다.