Java 中的 ChronoZonedDateTime isEqual()方法,带示例

原文:https://www . geeksforgeeks . org/chronozoneddatetime-isequal-method-in-Java-with-examples/

Java 中时区数据时间接口isEqual() 方法用于检查作为参数传递的日期是否等于该时区数据时间实例。它返回一个显示相同内容的布尔值。

语法:

default boolean isEqual(ChronoZonedDateTime otherDate)

参数:该方法接受一个参数 otherDate ,该参数指定要与该时区数据时间进行比较的其他日期时间。它不应为空。

返回:该函数返回布尔值,显示该日期时间是否等于指定的日期时间。

下面的程序说明了 ChronoZonedDateTime.isEqual()方法:

程序 1:

// Program to illustrate the isEqual() method

import java.util.*;
import java.time.*;
import java.time.chrono.*;

public class GfG {
    public static void main(String[] args)
    {
        // Parses the date
        ChronoZonedDateTime dt1
            = ZonedDateTime.parse(
                "2018-12-06T19:21:12.123+05:30[Asia/Calcutta]");

        // Prints the date
        System.out.println(dt1);

        // Parses the date
        ChronoZonedDateTime dt2
            = ZonedDateTime.parse(
                "2018-12-06T19:21:12.123+05:30[Asia/Calcutta]");

        // Prints the date
        System.out.println(dt2);

        // Compares both dates
        System.out.println(dt1.isEqual(dt2));
    }
}

输出:

2018-12-06T19:21:12.123+05:30[Asia/Calcutta]
2018-12-06T19:21:12.123+05:30[Asia/Calcutta]
true

程序二:

// Program to illustrate the isEqual() method

import java.util.*;
import java.time.*;
import java.time.chrono.*;

public class GfG {
    public static void main(String[] args)
    {
        // Parses the date
        ChronoZonedDateTime dt1
            = ZonedDateTime.parse(
                "2018-10-06T19:21:12.123+05:30[Asia/Calcutta]");

        // Prints the date
        System.out.println(dt1);

        // Parses the date
        ChronoZonedDateTime dt2
            = ZonedDateTime.parse(
                "2018-12-06T19:21:12.123+05:30[Asia/Calcutta]");

        // Prints the date
        System.out.println(dt2);

        // Compares both dates
        System.out.println(dt1.isEqual(dt2));
    }
}

输出:

2018-10-06T19:21:12.123+05:30[Asia/Calcutta]
2018-12-06T19:21:12.123+05:30[Asia/Calcutta]
false

参考:https://docs . Oracle . com/javae/9/docs/API/Java/time/chrono/chronitoredatetime . html # isequal-Java . time . cron . chronitoredatetime-