如何比较Java中的日期？ [英] How to compare dates in Java?

问题描述

如何比较Java中的日期？

示例：

date1是 22-02-2010

date2是 07-04-2010 今天

date3是 25-12 -2010

date3 始终大于 date1 和 date2 总是在今天。如何验证今天的日期是否在date1和date3之间？

解决方案

日期有 和之后方法，可以是相互比较，如下所示：

  if（todayDate.after（historyDate）&& todayDate.before（futureDate））{
 // in 
} 
  

对于包容性比较：

if（！historyDate.after（todayDate）&！futureDate.before（todayDate））{
/ * historyDate< = todayDate< = futureDate * /
}

你也可以给 Joda-Time 去，但请注意：

Joda-Time是事实上的 Java SE 8之前的Java标准日期和时间库。现在，用户被要求迁移到 java.time （ JSR- 310 ）。

后端口可用于Java 6和7以及Android。

How do I compare dates in between in Java?

Example:

date1 is 22-02-2010
date2 is 07-04-2010 today
date3 is 25-12-2010

date3 is always greater than date1 and date2 is always today. How do I verify if today's date is in between date1 and date 3?

解决方案

Date has before and after methods and can be compared to each other as follows:

if(todayDate.after(historyDate) && todayDate.before(futureDate)) {
    // In between
}

For an inclusive comparison:

if(!historyDate.after(todayDate) && !futureDate.before(todayDate)) {
    /* historyDate <= todayDate <= futureDate */ 
}

You could also give Joda-Time a go, but note that:

Joda-Time is the de facto standard date and time library for Java prior to Java SE 8. Users are now asked to migrate to java.time (JSR-310).

Back-ports are available for Java 6 and 7 as well as Android.

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