Java时间显示意外结果?

时间:2015-08-10 22:55:41

标签: java class object methods

以下是获取myobject.settime中给出的三个数字(小时,分钟和秒)的代码,并在军事时间中正确显示它们。问题是,当我给出三个数字时,我的控制台上的输出有三个完全不同的数字。

public class Clock{
    public static void main (String [] args){
        Time myobject = new Time();
        System.out.println(myobject.tomilitary());
        myobject.settime(13, 27, 6 );
        System.out.println(myobject.tomilitary());
    }
}

class Time{
    private int hour, minute, second;

    public void settime(int h, int m, int s){
        hour = ((h>=0 && h<24) ? h : 0); //ternary operator, kind of like an if statement
        hour = ((m>=0 && m<60) ? m : 0);
        hour = ((s>=0 && s<60) ? s : 0);
        System.out.println(h +"\t" +m +"\t" +s +" \t The next line should display these three numbers");
    }

    public String tomilitary() {    
        return String.format("%02d:%02d:%02d", hour , minute , second ); //%02d means display two decimal places for each int after the quote.
    }                                                  
}

现在我的输出是:

 00:00:00
 13 27  6    The next line should display these three numbers
 06:00:00

但是我输出的最后一行(06:00:00)应该是(13:27:06)请解释发生了什么。

1 个答案:

答案 0 :(得分:4)

我想你的问题是:

hour = ((h>=0 && h<24) ? h : 0); //ternary operator, kind of like an if statement
minute= ((m>=0 && m<60) ? m : 0);
second = ((s>=0 && s<60) ? s : 0);

您分配了三次hour