2020.8.23第四十八天

例9.1构造函数

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

 2.遇到的问题：无

3.明天继续写例题