一個簡單的設置時間，並用兩種形式顯示時間。

一個簡單的設置時間，並用兩種形式顯示時間。

import javax.swing.*;
import java.text.DecimalFormat;
public class TimeTest {
    public static void main(String args[]){
        Time1 time = new Time1();
        String output="The initial universal time is: "+time.toStandardString();
        time.setTime(13,27,6);
        output+="\n\nUniversal time after setTime is: "+time.toUniversalString()+"\nStandrad time after setTime is: "+time.toStandardString();
        JOptionPane.showMessageDialog(null,output,"Testing Class Timel",JOptionPane.INFORMATION_MESSAGE );

        System.exit(0);

    }
}

import java.text.DecimalFormat;

/**
 * Created by End on 15/12/12.
 */
public class Time1 extends Object{
    private int hour ;
    private int minute;
    private int second;

    public Time1(){
        setTime(0,0,0);
    }

    public void setTime(int hour,int minute,int second){
        this.hour=((hour>=0&&hour<24)?hour:0);
        this.minute=((minute>=0&&minute<60)?minute:0);
        this.second=((second>=0&&second<60)?second:0);
    }

    public String toUniversalString(){
        DecimalFormat twoDigits=new DecimalFormat("00");

        return twoDigits.format(hour)+":"+twoDigits.format(minute)+":"+twoDigits.format(second);
    }

    public String toStandardString(){
        DecimalFormat twoDigits=new DecimalFormat("00");

        return ((hour==12||hour==0)? 12: hour % 12) + ":" + twoDigits.format(minute)+":"+twoDigits.format(second)+(hour<12?"AM":"PM");
    }
}