作业要求:
定义一个名为 MyTime 的类,其中私有属性包括天数,时,分,秒;定义一个可以初始化时,分,秒的构造方法,并对初始化数值加以限定,以防出现bug;定义一个方法,可以把第几天,时,分,秒打印出来;通过定义方法可以分别对时,分,秒进行加运算,要保证天数,时,分,秒间的进制转换无误;
调试:在主方法中创建time对象,同时初始化时,分,秒;再对时,分,秒进行加运算,并将时间结果打印出来:
import java.util.*;
public class 时间管理 {
public static void main(String[] args) {
Scanner s=new Scanner(System.in);
System.out.println("请依次初始化时间:时:分:秒 (注意若初始化数值不合理,系统将默认初始化其值为0)");
int inTimeHour=s.nextInt();
int inTimeMinute=s.nextInt();
int inTimeSecond=s.nextInt();
MyTime time=new MyTime(inTimeHour,inTimeMinute,inTimeSecond);
System.out.println("快进 ? 时:");
inTimeHour=s.nextInt();
time.addHour(inTimeHour);
System.out.println("快进 ? 分:");
inTimeMinute=s.nextInt();
time.addMinute(inTimeMinute);
System.out.println("快进 ? 秒:");
inTimeSecond=s.nextInt();
time.addSecond(inTimeSecond);
time.display();
}
}
class MyTime {
protected int hour;
protected int minute;
protected int second;
protected int day;
public MyTime() {
}
public MyTime(int hour, int minute, int second) {
if(hour>=24){
setHour(0);
}
else this.hour = hour;
if(minute>=60){
setMinute(0);
}
else this.minute = minute;
if(second>=60){
setSecond(0);
}
else this.second = second;
}
public int getDay() {
return day;
}
public void setDay(int day) {
this.day = day;
}
public int getHour() {
return hour;
}
public void setHour(int hour) {
this.hour = hour;
}
public int getMinute() {
return minute;
}
public void setMinute(int minute) {
this.minute = minute;
}
public int getSecond() {
return second;
}
public void setSecond(int second) {
this.second = second;
}
public void display() {
System.out.println("目前时空:"+"第"+getDay()+"天:"+getHour() + ":" + getMinute() + ":" + getSecond());
}
public void addSecond(int second) {
int sec = this.second + second;
if (sec >= 60) {
addMinute((int) (sec / 60));
setSecond(sec % 60);
} else {
setSecond(sec);
}
}
public void addMinute(int minute) {
int min = this.minute + minute;
if (min >= 60) {
addHour((int) (min / 60));
setMinute(min % 60);
} else {
setMinute(min);
}
}
public void addHour(int hour) {
int hou= this.hour + hour;
if (hou >= 24) {
addDay((int) (hou / 24));
setHour(hou % 24);
} else {
setHour(hou);
}
}
public void addDay(int day) {
setDay(day);
}
}
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