package com.test;

import java.text.SimpleDateFormat;
import java.util.Date;

public class Test {

/**
 * @param args
 */
public static void main(String[] args) {
    
    Date todayDate = new Date();// 取时间
    
    SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
    String dateStr = sdf.format(todayDate);
    
    String[] formatDate=dateStr.split("-");  
    int year=Integer.parseInt(formatDate[0]); 
    int month=Integer.parseInt(formatDate[1]);
    int day=Integer.parseInt(formatDate[2]);
    
    String halfMonthFlag = "1";//默认上半月
    String fistDayStart = "";
    String middleDayEnd = "";
    String middleDayStart = "";
    String lastDayEnd = "";
    
    if(day>15){
        halfMonthFlag = "2";//下半月
    }
    
    fistDayStart = year+"-"+(month<10?("0"+month):(month))+"-"+"01 00:00:00";
    middleDayEnd = year+"-"+(month<10?("0"+month):(month))+"-"+"15 23:59:59";
    middleDayStart = year+"-"+(month<10?("0"+month):(month))+"-"+"16 00:00:00";
    month++;  
    if(month>12)  {   year++;   month=1;  }
    lastDayEnd = year+"-"+(month<10?("0"+month):(month))+"-"+"01 00:00:00";
    
    System.out.println("当前日期是（上半月or下半月）:"+halfMonthFlag);
    System.out.println("当前第一天开始时间:"+fistDayStart);
    System.out.println("当月中间结束时间:"+middleDayEnd);
    System.out.println("当月中间开始时间:"+middleDayStart);
    System.out.println("当月结束时间（即下个月第一天的开始时间）:"+lastDayEnd);
    
}

}