java - 如何在Java中比较日期？ [重复](How to compare dates in Java? [duplicate])

Question

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Java: how do I check if a Date is within a certain range? Java：如何检查日期是否在一定范围内？) (10 answers) （10个回答）)

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How do I compare dates in between in Java? (如何在Java之间比较日期？)

Example: (例：)

date1 is 22-02-2010 (date1是22-02-2010)
date2 is 07-04-2010 today (date2是今天的07-04-2010)
date3 is 25-12-2010 (date3是25-12-2010)

date3 is always greater than date1 and date2 is always today. (date3始终大于date1 ， date2始终是今天。) How do I verify if today's date is in between date1 and date 3? (如何验证今天的日期是否在date1和date 3之间？)

  ask by ant translate from so

Answer 1

Date has before and after methods and can be compared to each other as follows: (日期有之前和之后的方法，可以相互比较 ，如下所示：)

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

For an inclusive comparison: (进行包容性比较：)

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

You could also give Joda-Time a go, but note that: (您也可以尝试一下Joda-Time ，但请注意：)

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 ). (Joda-Time是Java SE 8之前的Java的事实上的标准日期和时间库。现在，要求用户迁移到java.time （ JSR-310 ）。)

Back-ports are available for Java 6 and 7 as well as Android. (反向端口适用于Java 6和7以及Android。)