클래스) 생성자와 기본 생성자의 관계 이해(점,좌표찍기)

package class02;

class Point {

	int x;

	int y;

	void showInfo() {

		System.out.println("P(" + this.x + "," + this.y + ")");

	}

	Point() {

		this(0, 0);

		System.out.println("기본 생성자");

	}

	Point(int x) {

		this.x = x;

		this.y = x;

	}

	Point(int x, int y) {

		this.x = x;

		this.y = y;

	}

}

public class Test03 {

	public static void main(String[] args) {

		Point p1 = new Point(10, 20);

		Point p2 = new Point();

		Point p3 = new Point(1);

		p1.showInfo();

		p2.showInfo();

		p3.showInfo();

	}

}