Java LinkedList void add（int index，Object o）方法，帶示例

LinkedList void add(int index，Object o)方法 (LinkedList void add(int index, Object o) 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，在這裡， Collection是一個接口。

• In this method, the index is the position where we have to insert the element and Object is the element of the LinkedList.

  在此方法中，索引是我們必須插入元素的位置，而Object是LinkedList的元素。

• This method is used to insert an object at the specified position in the linked list.

  此方法用于在連結清單的指定位置插入對象。

• Index position starts from 0.

  索引位置從0開始。

Syntax: 句法：

void add(int index , Object o){
    }
           

Parameter(s): 參數：

We can pass two arguments as a parameter in the method and the object will add at the specified position of the linked list.

我們可以在方法中傳遞兩個參數作為參數，并且該對象将添加到連結清單的指定位置。

Return value: 傳回值：

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

該方法的傳回類型為void ，這意味着該方法在執行後不傳回任何内容。

Java程式示範LinkedList add(int index，Object o)方法的示例 (Java program to demonstrate example of LinkedList add(int index, Object o) 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);

  // Add new elements at index 2 i.e. The position of 
  // newly inserted element is at the third position 
  // of the linked list and here index is 2 and index starts from 0  
  list.add(2, 25);

  //  New list Output 
  System.out.println("The new List is:" + list);
 }
}
           

Output 輸出量

D:\Programs>javac LinkList.java

D:\Programs>java LinkList2
The Current list is:[10, 20, 30, 40, 50]
The new List is:[10, 20, 25, 30, 40, 50]
           

翻譯自: https://www.includehelp.com/java/linkedlist-void-add-int-index-object-o-method-with-example.aspx