date.after方法_Java Date after（）方法与示例

date.after方法

日期类after()方法 (Date Class after() method)

after() method is available in java.util package.
after()方法在java.util包中可用。
after() method is used to check whether this date is after the given date (d) or not.
after()方法用于检查此日期是否在给定日期(d)之后。
after() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
after()方法是一种非静态方法，只能通过类对象访问，如果尝试使用类名访问该方法，则会收到错误消息。
after() method may throw an exception at the time of the checking date.
after()方法可能在检查日期时引发异常。

NullPointerException: This exception may throw when the given parameter (d) is null exists.
NullPointerException ：如果给定参数(d)为null，则可能引发此异常。

Syntax:

句法：

    public boolean after(Date d);

Parameter(s):

参数：

Date d – represents the Date object to be tested.
Date d –表示要测试的Date对象。

Return value:

返回值：

The return type of this method is boolean, it returns true when this date is after the given Date (d) otherwise it returns false.

此方法的返回类型为boolean ，如果此日期在给定Date(d)之后，则返回true，否则返回false。

Example:

例：

// Java program to demonstrate the example 
// of boolean after() method of Date 
import java.util.*;
public class AfterDate {
public static void main(String[] args) {
// create two Date object with two dates
Date this_date = new Date(2016, 8, 20);
Date given_date = new Date(2010, 11, 30);
// By using after() method is to check
// whether this date (this_date) is after the
// given date (given_date) or not
boolean status = this_date.after(given_date);
// Display status
System.out.println("this_date.after(given_date): " + status);
}
}

Output

输出量