Java学习的第四十九天

1.构造函数

import java.util.Scanner;
public class Cjava {
public static void main(String[]args) {
    Time t1=new Time();
    t1.settime();
    t1.showtime();
    Time t2=new Time();
    t2.showtime();
    }
}
class Time{
    int hour,minute,sec;
    Time(){
        hour=0;minute=0;sec=0;
    }
    void settime() {
        Scanner s=new Scanner(System.in);
        hour=s.nextInt();
        minute=s.nextInt();
        sec=s.nextInt();
    }
    void showtime() {
        System.out.println(hour+":"+minute+":"+sec);
    }
}

 2.没问题

3.明天继续写例题