Java Month of Year getLastMonthDate(int date)

Description

get Last Month Date

License

Open Source License

Declaration

public static int getLastMonthDate(int date) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

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

public class Main {
    private static SimpleDateFormat intSDF = new SimpleDateFormat("yyyyMMdd");
    private static final SimpleDateFormat defaultFormater = new SimpleDateFormat("yyyyMMdd");
    private static final SimpleDateFormat customizedFormater = new SimpleDateFormat("yyyyMMdd");

    public static int getLastMonthDate(int date) {
        Calendar calendar = Calendar.getInstance();
        int year = Integer.parseInt(String.valueOf(date).substring(0, 4));
        int month = Integer.parseInt(String.valueOf(date).substring(4, 6));
        int day = Integer.parseInt(String.valueOf(date).substring(6, 8));
        calendar.set(Calendar.YEAR, year);
        calendar.set(Calendar.MONTH, month - 1);
        calendar.set(Calendar.DAY_OF_MONTH, day);
        calendar.add(Calendar.MONTH, -1);
        return Integer.parseInt(intSDF.format(calendar.getTime()));
    }//  ww w  .j ava2s  . c o  m

    public static String format(Date date, String pattern) {
        synchronized (customizedFormater) {
            if (null != pattern && !"".equals(pattern.trim())) {
                customizedFormater.applyPattern(pattern);
            } else {
                throw new IllegalArgumentException("pattern can not be empty");
            }
            return customizedFormater.format(date);
        }
    }

    public static String format(Date date) {
        synchronized (defaultFormater) {
            return defaultFormater.format(date);
        }
    }

    public static String getTime() {
        Date currentTime = new Date();
        SimpleDateFormat formatter = new SimpleDateFormat("HH:mm:ss");
        return formatter.format(currentTime);
    }
}

Related

1. getLastMonth()
2. getLastMonth()
3. getLastMonthAndCycle()
4. getLastMonthdate()
5. getLastMonthDate()
6. getLastMonthOfQuater(Date date)
7. getLastMonthOfYear()
8. getMaxDayOfMonth(int year, int month)
9. getMonth(int week, int year)