LinkedList void clear()方法 (LinkedList void clear() method)

• This method is available in package java.util.Collection and here, Collection is an interface.

  該方法在java.util.Collection包中可用，在這里， Collection是一個接口。

• This method is declared in interface Collection and it is implemented by the class LinkedList.

  此方法在接口Collection中聲明，并且由類LinkedList實現。

• This method is used to remove all the elements from the linked list.

  此方法用于從鏈接列表中刪除所有元素。

• This method is used to remove or clear all the elements from the linked list and not delete the linked list.

  此方法用于從鏈接列表中刪除或清除所有元素，而不刪除鏈接列表。

Syntax:

句法：

    void  clear(){
}

Parameter(s):

參數：

This method does not accept any parameter.

此方法不接受任何參數。

Return value:

返回值：

The return type of this method is void that means this method returns nothing after execution.

該方法的返回類型為void ，這意味著該方法在執行后不返回任何內容。

Java程序演示LinkedList clear()方法的示例 (Java program to demonstrate example of LinkedList clear() method)

import java.util.LinkedList;
public class LinkList {
public static void main(String[] args) {
LinkedList list = new LinkedList();
// use add() method to add few elements in the list 
list.add(10);
list.add(20);
list.add(30);
list.add(40);
list.add(50);
//  Current list Output
System.out.println("The Current list is:" + list);
// Clear or remove all the elements from the list 
list.clear();
//  New list Output 
System.out.println("The new List is:" + list);
}
}

Output

輸出量

D:\Programs>javac LinkList.java
D:\Programs>java LinkList
The Current list is:[10, 20, 30, 40, 50]
The new List is:[]

翻譯自: https://www.includehelp.com/java/linkedlist-void-clear-method-with-example.aspx