基礎JAVA 16鋼-アクセス制御者、抽象類、インタフェース

public class Time {

private int hour;
private int minute;
private int second;

public int getHour() {
	return hour;
}

public void setHour(int hour) {
	if(hour < 0){
		this.hour = 0;
	}else if(hour > 23){
		this.hour = hour % 24;
	}else{
		this.hour = hour;
	}
}

public int getMinute() {
	return minute;
}

public void setMinute(int minute) {
	if(minute < 0){
		this.minute = 0;
	}else if(minute > 59){
		this.minute = minute % 60;
		setHour(this.hour + (minute / 60));
	}else{
		this.minute = minute;
	}
}

public int getSecond() {
	return second;
}

public void setSecond(int second) {
	if(second < 0){
		this.second = 0;
	}else if(59 < second){
		this.second = second % 60;
		setMinute(this.minute + (second / 60));
	}else{
		this.second = second;
	}
}

void clock(){
	while (true){
		System.out.println(toString());
		stop();
		setSecond(second + 1);
	}
}

private void stop(){
//clock을 구현하기 위해 부수적으로 만든 메서드 - 숨기는 게 나음
	try {
		Thread.sleep(1000);
	} catch (InterruptedException e) {
		e.printStackTrace();
	} //프로그램을 잠시동안 멈추게 하는 메서드(밀리세컨단위, 1000을 입력하면 1초)
}

@Override
public String toString() {
	return hour + ":" + minute + ":" + second;
}


}

public abstract class Animal {

//소리를 내는 메서드
abstract void sound();

}

class Dog extends Animal{

@Override
void sound() {
	System.out.println("멍멍!!");
	
}

}

class Cat extends Animal{

@Override
void sound() {
	System.out.println("야옹");
	
}

}

class Mouse extends Animal{

@Override
void sound() {
	System.out.println("찍찍");
	
}

}