day12_MyCounterTest2

package com.java1.day12;

class MyCounter {
	int value = 0;

	void inc(MyCounter ctr) {
		ctr.value = ctr.value + 1;
	}
}

public class MyCounterTest2 {
	public static void main(String[] args) {
		MyCounter obj = new MyCounter();

		System.out.println("obj.value=" + obj.value);
		obj.inc(obj);
		System.out.println("obj.value=" + obj.value);
	}
}

출력결과

obj.value=0
obj.value=1