Java 中的日历克隆()方法，示例

原文:https://www . geesforgeks . org/calendar-clone-method-in-Java-with-examples/

Calendar 类中的 clear() 方法用于克隆日历对象。它基本上创建了这个对象的一个浅拷贝。

语法:

public Object clone()

参数:该方法不取任何参数。

返回值:该方法不返回值。

下面的程序说明了 Calendar 类的 clone()方法的工作: 例 1:

// Java Code to illustrate clone() Method

import java.util.Calendar;

public class CalendarClassDemo {
    public static void main(String args[])
    {
        // Creating a calendar object
        Calendar calndr1 = Calendar.getInstance();

        // Displaying current calendar
        System.out.println("Original calendar: "
                           + calndr1.getTime());

        // Cloning the original
        Calendar calndr2 = (Calendar)calndr1.clone();

        // Displaying the Copy
        System.out.println("Cloned calendar: "
                           + calndr2.getTime());
    }
}

Output:

Original calendar: Tue Feb 12 11:41:36 UTC 2019
Cloned calendar: Tue Feb 12 11:41:36 UTC 2019

例 2:

// Java Code to illustrate clone() Method

import java.util.*;

public class CalendarClassDemo {
    public static void main(String args[])
    {
        // Creating a calendar object
        Calendar calndr1
            = new GregorianCalendar(2018, 12, 2);

        // Displaying current calendar
        System.out.println("Original calendar: "
                           + calndr1.getTime());

        // Cloning the original
        Calendar calndr2 = (Calendar)calndr1.clone();

        // Displaying the Copy
        System.out.println("Cloned calendar: "
                           + calndr2.getTime());
    }
}

Output:

Original calendar: Wed Jan 02 00:00:00 UTC 2019
Cloned calendar: Wed Jan 02 00:00:00 UTC 2019

参考:https://docs . Oracle . com/javase/7/docs/API/Java/util/calendar . html # clone()

版权属于：月萌API www.moonapi.com，转载请注明出处

本文链接：https://moonapi.com/news/18760.html