Java日期/日历对象字符串，比较 [英] Java Date/Calendar object strings, compare

问题描述

我有如

2011/06/13 17:52:20

并作为字符串返回。我如何比较这与另一个日期格式化相同的方式。我想确定哪一个大于，小于或等于，对于我正在形成的条件语句。

and being returned as strings. How would I compare this against another date formatted the same way. I want to determine which one is greater than, less than or equal to, for a conditional statement I am forming.

没有重新发明轮子可能已经有一个执行此操作的框架

Without reinventing the wheel (or making several cases) when there might already be a framework for doing this

谢谢！

推荐答案

• 使用 SimpleDateFormat 来解析


• 获取的日期对象的code>


• use SimpleDateFormat to parse
• use compareTo(..) of the Date objects that are obtained

：

SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
Date date1 = sdf.parse(string1);
Date date2 = sdf.parse(string2);

int result = date1.compareTo(date2);

结果是（从 java.util.Date documentation）：

The result is (from the java.util.Date documentation):




如果参数Date等于此日期，则值为0;如果此日期在Date参数之前，则值小于0;如果此日期在Date参数之后，则该值大于0。

the value 0 if the argument Date is equal to this Date; a value less than 0 if this Date is before the Date argument; and a value greater than 0 if this Date is after the Date argument.

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