[Java] 생성자

package org.opentutorials.javatutorials.constructor;

class Calculator {
	int left, right;
	
	public Calculator(int left, int right) {
		this.left = left;
		this.right = right;
	}
	
	public void sum() {
		System.out.println(this.left + this.right);
	}
	
	public void avg() {
		System.out.println((this.left + this.right)/2);
	}
}

public class CalculatorDemo1 {

	public static void main(String[] args) {
		Calculator c1 = new Calculator(10, 20); //생성자
		c1.sum();
		c1.avg();
 
		Calculator c2 = new Calculator(20, 40);  //생성자
		c2.sum();
		c2.avg();
	}

}

Calculator c1 = new Calculator(10, 20); 에서

Calculator 가 생성자