如何比较当日&给定日期和月份的月份Java月
我想将当前日期与给定日期进行比较。当前日期格式为（dd-MM-YYYY）。我不想得到今年。假设今天的日期是2016年8月30日。我只想得到30-08，我不想要当年2016。给定的日期是15-08和31-08。我没有得到像30-08这样的当前日期。我该如何获得和如何比较？这是我尝试过的代码：
I want to compare current date with the given date. Current date format will be (dd-MM-YYYY). I don't want to get the current year. Suppose today's date is 30-08-2016. I want to get only 30-08, I don't want current year 2016. The given date is 15-08 and 31-08. I did not get the current date like this 30-08. How can I get this and how can I compare? Here is my code which I have tried:
Date date1_aug, date2_aug, cur_date;
String cur_date_string, sDay, sMonth;
SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-YYYY");
Calendar calendar = Calendar.getInstance();
int year = calendar.get(Calendar.YEAR);
int month = calendar.get(Calendar.MONTH)+1;
int day = calendar.get(Calendar.DATE);
sDay = Integer.toString(day);
sMonth = Integer.toString(month);
cur_date_string = sDay+"-"+sMonth;
try {
cur_date = sdf.parse(cur_date_string);
} catch (java.text.ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
-
另一个功能：
another function:
try{
date1_aug = sdf.parse("15-08");
date2_aug = sdf.parse("31-08");
if(cur_date.equals(date1_aug) || cur_date.after(date1_aug) || cur_date.before(date2_aug)){
textView_Amount_LateFee.setText(Config.fine_aug.get(1));
}
}catch(ParseException ex){
ex.printStackTrace();
}
java.time.MonthDay
在 ThreeTenABP 项目，它是 = nofollow noreferrer> Java时间类内置于Java 8及更高版本中。避免麻烦的旧式旧式日期时间类。
java.time.MonthDay
Use modern date-time classes in the ThreeTenABP project, an Android adaptation of the back-port of the java-time classes built into Java 8 and later. Avoid the troublesome old legacy date-time classes.
这些java.time类包括 MonthDay 类代表一个月和一个月中的某天
These java.time classes include the MonthDay class to represent a month and a day-of-month without a year.
MonthDay md = MonthDay.of( 8 , 15 );
此类已实现 可比较 接口及其 compareTo 方法。还实现了 等于 ， isBefore 和 isAfter 。因此，工作就完成了。
This class already implements the Comparable interface and its compareTo method. Also implements methods equals, isBefore, and isAfter. So, job done.
确定当前 MonthDay 需要一个时区。在任何给定的时刻，日期都会根据时区。
ZoneId z = ZoneId.of( "America/Montreal" );
MonthDay today = MonthDay.now( z );
关于java.time
java.time 框架内置于Java 8及更高版本中。这些类取代了麻烦的旧旧版日期时间类，例如 java.util.Date ， Calendar ，& SimpleDateFormat 。
About java.time
The java.time framework is built into Java 8 and later. These classes supplant the troublesome old legacy date-time classes such as java.util.Date, Calendar, & SimpleDateFormat.
现在处于维护模式的Joda-Time 项目建议迁移到 java.time 类。
The Joda-Time project, now in maintenance mode, advises migration to the java.time classes.
要了解更多信息，请参见 Oracle教程。并在Stack Overflow中搜索许多示例和说明。规范为 JSR 310 。
To learn more, see the Oracle Tutorial. And search Stack Overflow for many examples and explanations. Specification is JSR 310.
从哪里获取java.time类？
Where to obtain the java.time classes?
- Java SE 8 和 SE 9 和后来的
- 内置。
- 具有捆绑实现的标准Java API的一部分。
- Java 9添加了一些次要功能和修复。
-
Java SE 8 and SE 9 and later
- Built-in.
- Part of the standard Java API with a bundled implementation.
- Java 9 adds some minor features and fixes.
- 许多java.time功能都被反向移植到Java 6&
nofollow noreferrer> ThreeTen-Backport 。
- Much of the java.time functionality is back-ported to Java 6 & 7 in ThreeTen-Backport.
- ThreeTenABP 项目专门为Android改编了 ThreeTen-Backport （上面提到）。
- 请参阅 如何使用ThreeTenABP… 。
- The ThreeTenABP project adapts ThreeTen-Backport (mentioned above) for Android specifically.
- See How to use ThreeTenABP….