Java Calendar clone()用法及代碼示例

Calendar類中的clear()方法用於克隆日曆對象。它本質上會創建該對象的淺拷貝。

用法:

public Object clone()

參數：該方法不帶任何參數。

返回值：該方法不返回任何值。

以下示例程序旨在說明Calendar類的clone()方法的用法：
示例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()); 
    } 
}

輸出：

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

示例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()); 
    } 
}

輸出：

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

參考： https://docs.oracle.com/javase/7/docs/api/java/util/Calendar.html#clone()

相關用法

注：本文由純淨天空篩選整理自Chinmoy Lenka大神的英文原創作品 Calendar clone() Method in Java with Examples。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。