[명품JAVA프로그래밍] 6장 실습문제 3번

package etc;

public class Calc {
	private int x,y;
	public Calc(int x,int y) {this.x = x; this.y = y;}
	public int sum() {return x+y;}
}

package main;

import etc.Calc;

public class MainApp {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Calc c = new Calc(10,20);
		System.out.println(c.sum());
	}

}

 

결과

30