Java 中的 OffsetDateTime isBefore()方法，带示例

原文:https://www . geeksforgeeks . org/offsetdatetime-is before-method-in-Java-with-examples/

Java 中 OffsetDateTime 类的 isBefore() 方法检查该日期是否在指定的日期时间之前，如果是，则返回 true。

语法:

public boolean isBefore(OffsetDateTime other)

参数:该方法接受单个参数其他，检查该日期时间是否在另一个日期时间之前。

返回值:如果在另一个日期时间之前，则返回真，否则返回假。

以下程序说明了 isBefore() 方法:

程序 1:

// Java program to demonstrate the isBefore() method

import java.time.OffsetDateTime;
import java.time.ZonedDateTime;

public class GFG {
    public static void main(String[] args)
    {

        // Parses the date1
        OffsetDateTime date1
            = OffsetDateTime
                  .parse("2018-11-12T13:30:30+05:00");

        // Parses the date2
        OffsetDateTime date2
            = OffsetDateTime
                  .parse("2018-12-12T13:30:30+05:00");

        // Prints both dates
        System.out.println("Date1: " + date1);
        System.out.println("Date2: " + date2);

        // Compare both
        System.out.println("Date1 before Date2? "
                           + date1.isBefore(date2));
    }
}

输出:

Date1: 2018-11-12T13:30:30+05:00
Date2: 2018-12-12T13:30:30+05:00
Date1 before Date2? true

程序二 :

// Java program to demonstrate the isBefore() method

import java.time.OffsetDateTime;
import java.time.ZonedDateTime;

public class GFG {
    public static void main(String[] args)
    {

        // Parses the date1
        OffsetDateTime date1
            = OffsetDateTime
                  .parse("2018-12-12T13:30:30+05:00");

        // Parses the date2
        OffsetDateTime date2
            = OffsetDateTime
                  .parse("2015-12-12T13:30:30+05:00");

        // Prints both dates
        System.out.println("Date1: " + date1);
        System.out.println("Date2: " + date2);

        // Compare both
        System.out.println("Date1 before Date2? "
                           + date1.isBefore(date2));
    }
}

输出:

Date1: 2018-12-12T13:30:30+05:00
Date2: 2015-12-12T13:30:30+05:00
Date1 before Date2? false

参考:https://docs . Oracle . com/javase/10/docs/API/Java/time/offsetdatetime . html # isb before(Java . time . offsetdatetime)

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