1.8 全新日期api

/**
 * 
 * @note 
 * @author zhouyy <br>
 * Apr 14, 2017 5:21:12 PM
 * @version 
 */
package com.bytter.util;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.time.temporal.TemporalAdjusters;
import java.util.Date;

/**
 * 
 * @note 
 * @author zhouyy <br>
 * Apr 14, 2017 5:21:12 PM
 * @version 
 */
public class NewDate {
    
    /**
     * 获取当前日期 格式 LocalDate
     * 
     * @return
     */
    public static LocalDate getLocalDateNow() {
        return LocalDate.now();
    }
    
    
    /**
     * LocalDate 转 String
     * 
     * @param date
     * @return
     */
    public static String getLocalDateStr(LocalDate date, String pattern) {
        return date.format(DateTimeFormatter.ofPattern(pattern));
    }

    /**
     * 取得日期所在月的最后一天 LocalDate
     * 
     * @param date
     * @return String
     */
    public static String getLastMonthDay(LocalDate date) {
        return date.with(TemporalAdjusters.lastDayOfMonth()).toString();
    }
    
    
    /**
     * 把字符串转成 LocalDate <br>
     * strDate 格式就是 aMask
     * 
     * @param aMask
     * @param strDate
     * @return
     */
    public static LocalDate getLocalDate(String aMask, String strDate) {
        return LocalDate.parse(strDate, DateTimeFormatter.ofPattern(aMask));
    }

    /**
     * java.sql.Date 转 LocaDate<br>
     * jdk1.8
     * 
     * @param date
     * @return
     */
    public static LocalDate sqlDateTolocalDate(java.sql.Date date) {
        return date.toLocalDate();
    }

    /**
     * java.util.Date 转 LocaDate
     * 
     * @param date
     * @return
     */
    public static LocalDate DateTolocalDate(Date date) {
        return sqlDateTolocalDate(new java.sql.Date(date.getTime()));
    }

    /**
     * LocalDate 转 java.util.Date
     * 
     * @param date
     * @return
     */
    public static Date localDateToDate(LocalDate date) {
        try {
            return new SimpleDateFormat("yyyy-MM-dd").parse(date.toString());
        } catch (ParseException e) {
            System.out.println("LocalDate类型 日期转 Date 报错");
            e.printStackTrace();
        }
        return null;
    }

    /**
     * LocalDate 转 java.sql.Date
     * 
     * @param date
     * @return
     */
    public static java.sql.Date localDateToSqlDate(LocalDate date) {
        return new java.sql.Date(localDateToDate(date).getTime());
    }

    /**
     * 两日期间隔天数
     * 
     * @param date
     * @param compareDate
     * @return
     */
    public static int getSubDayOfDate(LocalDate date, LocalDate compareDate) {
        return (int) (date.toEpochDay() - compareDate.toEpochDay());
    }

    /**
     * date 加/减 天 对应的日期
     * 
     * @param date
     * @param day
     * @return
     */
    public static LocalDate getBeforeAfterDate(LocalDate date, int day) {
        return date.plusDays(day);
    }

    /**
     * date 加/减月 对应的日期
     * 
     * @param date
     * @param day
     * @return
     */
    public static LocalDate getBeforeAfterMonth(LocalDate date, int month) {
        return date.plusMonths(month);
    }

    /**
     * date 加/减年 对应的日期
     * 
     * @param date
     * @param day
     * @return
     */
    public static LocalDate getBeforeAfterYear(LocalDate date, int year) {
        return date.plusYears(year);
    }

    /**
     * LocalDateTime 类型转 string
     * 
     * @param dateTime
     * @return
     */
    public static String getLocalDateTime(LocalDateTime dateTime, String pattern) {
        return dateTime.format(DateTimeFormatter.ofPattern(pattern));
    }
    
    
    
    
    
    

}