Get Time From Date : Time « Development Class « Java

Home
Java
1.2D Graphics GUI
2.3D
3.Advanced Graphics
4.Ant
5.Apache Common
6.Chart
7.Class
8.Collections Data Structure
9.Data Type
10.Database SQL JDBC
11.Design Pattern
12.Development Class
13.EJB3
14.Email
15.Event
16.File Input Output
17.Game
18.Generics
19.GWT
20.Hibernate
21.I18N
22.J2EE
23.J2ME
24.JDK 6
25.JNDI LDAP
26.JPA
27.JSP
28.JSTL
29.Language Basics
30.Network Protocol
31.PDF RTF
32.Reflection
33.Regular Expressions
34.Scripting
35.Security
36.Servlets
37.Spring
38.Swing Components
39.Swing JFC
40.SWT JFace Eclipse
41.Threads
42.Tiny Application
43.Velocity
44.Web Services SOA
45.XML
Java Tutorial
Java Book
Java Source Code / Java Documentation
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
SCJP
Java » Development Class » TimeScreenshots 
Get Time From Date
    
/*******************************************************************************
 * Copyright 2008 Mjrz.net
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/


import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.TimeZone;

/**
 * @author Mjrz [email protected]
 *
 */
public class DateUtils {
  public static final String FORMAT_YYYYMMDD = "yyyy-MM-dd";
  public static final String FORMAT_YYYYMMDD_SLASHES = "yyyy/MM/dd";
  public static final String GENERIC_DISPLAY_FORMAT = "E, dd MMM yyyy";
  public static final String TIME_DISPLAY_FORMAT = "HH mm ss";
  public static final int LAST_WEEK = 1;
  public static final int LAST_MONTH = 2;

  public static final String formatDate(Date dt, String format) {
    GregorianCalendar cal = new GregorianCalendar();
    cal.setTime(dt);
    
    java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat(format);
    sdf.setTimeZone(TimeZone.getDefault());     
    return (sdf.format(cal.getTime()));   
  }
  
  public static final String getCurrentDate(String format) {
    Calendar cal = Calendar.getInstance(TimeZone.getDefault());
      java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat(format);
      sdf.setTimeZone(TimeZone.getDefault());     
      return (sdf.format(cal.getTime()));
  }
  
  public static final String dateToString(Date dt, String dateformat) {
    GregorianCalendar cal = new GregorianCalendar();
    cal.setTime(dt);
    
    StringBuffer ret = new StringBuffer();
    String separator = new String();
    if(dateformat.equals(DateUtils.FORMAT_YYYYMMDD) ) {
      separator = "-";
    }
    if(dateformat.equals(DateUtils.FORMAT_YYYYMMDD_SLASHES) ) {
      separator = "/";
    }
    ret.append(cal.get(Calendar.YEAR));
    ret.append(separator);
    ret.append(cal.get(Calendar.MONTH) + 1);
    ret.append(separator);
    ret.append(cal.get(Calendar.DATE));

    return ret.toString();
  }
  
  public static final String dateToString(Date dt, String tzString, String dateformat) {
    GregorianCalendar cal = new GregorianCalendar();
    cal.setTime(dt);
    cal.setTimeZone(TimeZone.getTimeZone(tzString));
    
    StringBuffer ret = new StringBuffer();
    String separator = new String();
    if(dateformat.equals(DateUtils.FORMAT_YYYYMMDD) ) {
      separator = "-";
    }
    if(dateformat.equals(DateUtils.FORMAT_YYYYMMDD_SLASHES) ) {
      separator = "/";
    }
    ret.append(cal.get(Calendar.YEAR));
    ret.append(separator);
    ret.append(cal.get(Calendar.MONTH) + 1);
    ret.append(separator);
    ret.append(cal.get(Calendar.DATE));

    return ret.toString();
  }

  public static final String getTimeFromDate(Date dt) {
    Calendar cal = new GregorianCalendar();
    cal.setTime(dt);
    
    StringBuffer ret = new StringBuffer();
    ret.append(cal.get(Calendar.HOUR));
    ret.append(":");
    ret.append(cal.get(Calendar.MINUTE));
    
    return ret.toString();
  }
  
  public static final String getTimeFromDate(Date dt, String tzString) {
    try {
      GregorianCalendar gc = new GregorianCalendar();
      gc.setTime(dt);
      gc.setTimeZone(TimeZone.getTimeZone(tzString));
      StringBuffer ret = new StringBuffer();
      ret.append(gc.get(Calendar.HOUR));
      ret.append(":");
      ret.append(gc.get(Calendar.MINUTE));
      ret.append(" ");
      if(gc.get(Calendar.AM_PM) == 0) {
        ret.append("AM");
      }
      else { 
        ret.append("PM");
      }
      return ret.toString();
    }
    catch(Exception e) {
      return "";
    }
  }
  
  public static final String getDateTimeFromDate(Date dt, String tzString) {
    try {
      GregorianCalendar gc = new GregorianCalendar();
      gc.setTime(dt);
      gc.setTimeZone(TimeZone.getTimeZone(tzString));
      StringBuffer ret = new StringBuffer();
      ret.append(gc.get(Calendar.YEAR));
      ret.append("-");
      ret.append(gc.get(Calendar.MONTH) - 1);
      ret.append("-");
      ret.append(gc.get(Calendar.DATE));
      ret.append(" ");
      ret.append(gc.get(Calendar.HOUR));
      ret.append(":");
      ret.append(gc.get(Calendar.MINUTE));
      ret.append(" ");
      if(gc.get(Calendar.AM_PM) == 0) {
        ret.append("AM");
      }
      else { 
        ret.append("PM");
      }
      return ret.toString();
    }
    catch(Exception e) {
      return "";
    }
  }
  
  public static final String calendarToString(Calendar cal, String dateformat) {
    StringBuffer ret = new StringBuffer();
    if(dateformat.equals(FORMAT_YYYYMMDD) ) {
      ret.append(cal.get(Calendar.YEAR));
      ret.append("-");
      
      String month = null;
      int mo = cal.get(Calendar.MONTH) + 1; /* Calendar month is zero indexed, string months are not */
      if(mo < 10) {
        month = "0" + mo;
      }
      else {
        month = "" + mo;
      }
      ret.append(month);      
      
      ret.append("-");
      
      String date = null;
      int dt = cal.get(Calendar.DATE);
      if(dt < 10) {
        date = "0" + dt;
      }
      else {
        date = "" + dt;
      }
      ret.append(date);
    }
    
    return ret.toString();
  }


  
  public static final GregorianCalendar getCurrentCalendar(String utimezonestring) {
    try {
      GregorianCalendar gc = new GregorianCalendar();

      gc.setTimeZone(TimeZone.getTimeZone(utimezonestring));
      return gc;
    }
    catch(Exception e) {
      //If exception, return server TimeStamp
      return new GregorianCalendar();
    }
  }
  
  public static String[] getDateRange(int cmd) {
    GregorianCalendar gc = new GregorianCalendar();
    GregorianCalendar gc2 = new GregorianCalendar();
    
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); //$NON-NLS-1$
    String ret[] = new String[2];
    ret[1] = sdf.format(gc.getTime());
    
    if(cmd == LAST_WEEK) {      
      for(int i = 0; i < 7; i++) {
        gc2.add(Calendar.DATE, -1);
      }
      
    }
    if(cmd == LAST_MONTH) {
      gc2.add(Calendar.MONTH, -1);      
    }
    ret[0] = sdf.format(gc2.getTime());
    return ret;
  }


  public static final String getDayString(int day) {
    switch (day) {
      case Calendar.SUNDAY:
        return "SUNDAY";      
      case Calendar.MONDAY:
        return "MONDAY";
      case Calendar.TUESDAY:
        return "TUESDAY";
      case Calendar.WEDNESDAY:
        return "WEDNESDAY";
      case Calendar.THURSDAY:
        return "THURSDAY";
      case Calendar.FRIDAY:
        return "FRIDAY";
      case Calendar.SATURDAY:
        return "SATURDAY";
    }
    return "";
  }
}

   
    
    
    
  
Related examples in the same category
1.ISO8601 Date Time Format
2.Time Format
3.Time Formatter
4.Returns time string
5.Returns the given date with the time values cleared
6.Convert the time to the midnight of the currently set date
7.Compare both times and dates
8.Tells you if the date part of a datetime is in a certain time range
9.Returns the given date with time set to the end of the day
10.Convert milliseconds to readable string
11.Determines whether or not a date has any time values (hour, minute, seconds or millisecondsReturns the given date with the time values cleared
12.Returns a formatted String from time
13.Time library
14.Elapsed time in hours/minutes/seconds
15.Sets the time on the same day to 00:00:00.000
16.Determines if given times span at least an entire day
17.Converts a given time in milliseconds into a XMLGregorianCalendar object.
18.Time Distance
19.Time Formatter
20.Format time
21.A utility class for representing a span of time.
22.GmtCalendar is a useful class for working with times that are based using GMT time.
23.Time Period
24.Represents the TSTInfo strcture within a time-stamp token (RFC 3161).
25.SimpleTimer enables bounded and unbounded waits.
26.Takes a time in milliseconds and returns an hours, minutes and seconds representation.
27.Format time in milliseconds
ww___w__.ja_va2___s___.__co_m___ | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.