Makes a time String in the format HH:MM:SS from a Date. - Java java.util

Java examples for java.util:Time

  1. HOME
  2. Java
  3. java.util
  4. Time

Description

Makes a time String in the format HH:MM:SS from a Date.

Demo Code


//package com.java2s;

import java.util.Calendar;

public class Main {
    /**/*from w w  w  .  j a  v a 2  s .  c  om*/
     * Makes a time String in the format HH:MM:SS from a Date. If the seconds
     * are 0, then the output is in HH:MM.
     * 
     * @param date
     *            The Date
     * @return A time String in the format HH:MM:SS or HH:MM
     */
    public static String toTimeString(java.util.Date date) {
        if (date == null)
            return "";
        Calendar calendar = Calendar.getInstance();

        calendar.setTime(date);
        return (toTimeString(calendar.get(Calendar.HOUR_OF_DAY),
                calendar.get(Calendar.MINUTE),
                calendar.get(Calendar.SECOND)));
    }

    /**
     * Makes a time String in the format HH:MM:SS from a separate ints for hour,
     * minute, and second. If the seconds are 0, then the output is in HH:MM.
     * 
     * @param hour
     *            The hour int
     * @param minute
     *            The minute int
     * @param second
     *            The second int
     * @return A time String in the format HH:MM:SS or HH:MM
     */
    public static String toTimeString(int hour, int minute, int second) {
        String hourStr;
        String minuteStr;
        String secondStr;

        if (hour < 10) {
            hourStr = "0" + hour;
        } else {
            hourStr = "" + hour;
        }
        if (minute < 10) {
            minuteStr = "0" + minute;
        } else {
            minuteStr = "" + minute;
        }
        if (second < 10) {
            secondStr = "0" + second;
        } else {
            secondStr = "" + second;
        }
        if (second == 0)
            return hourStr + ":" + minuteStr;
        else
            return hourStr + ":" + minuteStr + ":" + secondStr;
    }
}

Related Tutorials