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));
     }

 }