快速获取当天0点0分0秒（00:00:00），23点59分59秒（23:59:59）

// 利用Apache lang包快速获取凌晨0点0分0秒，23点59分59秒字符串
        System.out.println(DateFormatUtils.format(new Date(), “yyyy-MM-dd 00:00:00”));
        System.out.println(DateFormatUtils.format(new Date(), “yyyy-MM-dd 23:59:59”));
 

// 获取当天凌晨0点0分0秒Date
        Calendar calendar1 = Calendar.getInstance();
        calendar1.set(calendar1.get(Calendar.YEAR), calendar1.get(Calendar.MONTH), calendar1.get(Calendar.DAY_OF_MONTH),
                0, 0, 0);
        Date beginOfDate = calendar1.getTime();
        System.out.println(beginOfDate);
 

// 获取当天23点59分59秒Date
        Calendar calendar2 = Calendar.getInstance();
        calendar2.set(calendar2.get(Calendar.YEAR), calendar2.get(Calendar.MONTH), calendar2.get(Calendar.DAY_OF_MONTH),
                23, 59, 59);
        Date endOfDate = calendar2.getTime();
        System.out.println(endOfDate);
 

依次输出结果：

2016-05-24 00:00:00

2016-05-24 23:59:59

Tue May 24 00:00:00 CST 2016

Tue May 24 23:59:59 CST 2016

附：Apache lang Maven地址

<dependency>
     <groupId>org.apache.commons</groupId>
       <artifactId>commons-lang3</artifactId>
      <version>3.3.2</version>
</dependency>
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原文：https://blog.csdn.net/qq_19260029/article/details/51489928