TimeUtils(没试过)

package util;

import java.text.DateFormat;
import java.text.DecimalFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;

public class TimeUtils {

    public static void main( String[] args ) throws ParseException{

        String time = getMonth("2002-1-08 14:50:38");
        System.out.println(time);
        System.out.println(getDay("2002-1-08 14:50:38"));
        System.out.println(TimeUtils.parseTime("2016-05-19 19:17","yyyy-MM-dd HH:mm"));

    }
    //get current time
    public static String GetNowDate(String formate){
        String temp_str="";
        Date dt = new Date();
        SimpleDateFormat sdf = new SimpleDateFormat(formate);
        temp_str=sdf.format(dt);
        return temp_str;
    }
    public static String getMonth( String time ){

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM");
        Date date = null;
        try {

            date = sdf.parse(time);
            Calendar cal = Calendar.getInstance();
            cal.setTime(date);

        } catch (ParseException e) {
            e.printStackTrace();
        }

        return sdf.format(date);

    }

    public static String getDay( String time ){

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        Date date = null;
        try {

            date = sdf.parse(time);
            Calendar cal = Calendar.getInstance();
            cal.setTime(date);

        } catch (ParseException e) {
            e.printStackTrace();
        }

        return sdf.format(date);

    }

    public static Date parseTime(String inputTime) throws ParseException{

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date = sdf.parse(inputTime); 

        return date;

    }
    public static String dateToString(Date date, String type) {
        DateFormat df = new SimpleDateFormat(type);
        return df.format(date);
    }
    public static Date parseTime(String inputTime, String timeFormat) throws ParseException{

        SimpleDateFormat sdf = new SimpleDateFormat(timeFormat);
        Date date = sdf.parse(inputTime); 

        return date;

    }

    public static Calendar parseTimeToCal(String inputTime, String timeFormat) throws ParseException{

        SimpleDateFormat sdf = new SimpleDateFormat(timeFormat);
        Date date = sdf.parse(inputTime);
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);

        return calendar;

    }

    public static int getDaysBetweenCals(Calendar cal1, Calendar cal2) throws ParseException{

        return (int) ((cal2.getTimeInMillis()-cal1.getTimeInMillis())/(1000*24*3600));

    }

    public static Date parseTime(long inputTime){

        //  SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date= new Date(inputTime);
        return date;

    }

    public static String parseTimeString(long inputTime){

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date= new Date(inputTime);
        return sdf.format(date);

    }
    public static String parseStringTime(String inputTime){

        String date=null;
        try {
            Date date1 = new SimpleDateFormat("yyyyMMddHHmmss").parse(inputTime);
            date=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(date1);
        } catch (ParseException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        return date;
    }
    public static List<String> YearMonth(int year) {
        List<String> yearmouthlist=new ArrayList<String>();
        for (int i = 1; i < 13; i++) {
            DecimalFormat dfInt=new DecimalFormat("00");
            String sInt = dfInt.format(i);
            yearmouthlist.add(year+sInt);
        }

        return yearmouthlist;
    }
    public static List<String> YearMonth(int startyear,int finistyear) {
        List<String> yearmouthlist=new ArrayList<String>();
        for (int i = startyear; i < finistyear+1; i++) {
            for (int j = 1; j < 13; j++) {
                DecimalFormat dfInt=new DecimalFormat("00");
                String sInt = dfInt.format(j);
                yearmouthlist.add(i +"-"+sInt);
            }
        }
        return yearmouthlist;
    }
    public static List<String> TOAllDay(int year){
        List<String> daylist=new ArrayList<String>();
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        int m=1;//月份计数
        while (m<13)
        {
            int month=m;
            Calendar cal=Calendar.getInstance();//获得当前日期对象
            cal.clear();//清除信息
            cal.set(Calendar.YEAR,year);
            cal.set(Calendar.MONTH,month-1);//1月从0开始
            cal.set(Calendar.DAY_OF_MONTH,1);//设置为1号,当前日期既为本月第一天  

            System.out.println("##########___" + sdf.format(cal.getTime())); 

            int count=cal.getActualMaximum(Calendar.DAY_OF_MONTH); 

            System.out.println("$$$$$$$$$$________" + count); 

            for (int j=0;j<=(count - 2);)
            {
                cal.add(Calendar.DAY_OF_MONTH,+1);
                j++;
                daylist.add(sdf.format(cal.getTime()));
            }
            m++;
        }
        return daylist;
    }
    //获取昨天的日期
    public static String getyesterday(){
        Calendar   cal   =   Calendar.getInstance();
        cal.add(Calendar.DATE,   -1);
        String yesterday = new SimpleDateFormat( "yyyy-MM-dd ").format(cal.getTime());
        return yesterday;
    }
}