Java tutorial
//package com.java2s; /* * Copyright (C) 2012 www.amsoft.cn * * 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.ParseException; import java.text.SimpleDateFormat; import java.util.Date; public class Main { public static String getTimeQuantum(String strDate, String format) { Date mDate = getDateByFormat(strDate, format); int hour = mDate.getHours(); if (hour >= 12) return "PM"; else return "AM"; } public static Date getDateByFormat(String strDate, String format) { SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format); Date date = null; try { date = mSimpleDateFormat.parse(strDate); } catch (ParseException e) { e.printStackTrace(); } return date; } }