Java LinkedList boolean addAll（int index，Collection c）方法，带有示例

LinkedList boolean addAll(int index，Collection c)方法 (LinkedList boolean addAll(int index, Collection c) method)

This method is available in package java.util.Collection and here, Collection is an interface.
该方法在java.util.Collection包中可用，在这里， Collection是一个接口。
In this method, the index is the position where we have to start inserting the Collection elements and Collection is the list of elements whether Collection is of ArrayList, LinkedList type, etc.
在此方法中，索引是我们必须开始插入Collection元素的位置，而Collection是元素列表，无论Collection是ArrayList，LinkedList类型还是其他类型。
This method is used to insert the collection of objects at the specified position in the linked list.
此方法用于在链接列表的指定位置插入对象的集合。
Index position starts from 0.
索引位置从0开始。

Syntax:

句法：

    boolean addAll(int index , Collection c){
}

Parameter(s):

参数：

We can pass two arguments as a parameter in the method and the Collection parameter is the collection of elements will add from the starting position of the specified index in the linked list.

我们可以在方法中传递两个参数作为参数，而Collection参数是将从链表中指定索引的起始位置开始添加的元素集合。

Return value:

返回值：

The return type of this method is boolean that means this method returns true during execution of at least inserting of one element.

该方法的返回类型为布尔值，这意味着该方法在至少插入一个元素的过程中返回true。

Java程序演示LinkedList addAll(int index，Collection c)方法的示例 (Java program to demonstrate example of LinkedList addAll(int index, Collection c) method)

import java.util.LinkedList;
import java.util.ArrayList;
public class LinkList {
public static void main(String args[]) {
// Creating a LinkedList 
LinkedList list = new LinkedList();
// Use add() method to add objects 
// in the LinkedList
list.add("J");
list.add("A");
list.add("V");
list.add("A");
// Creating a Collection ArrayList object 
// of ArrayList Type
ArrayList al = new ArrayList();
al.add("P");
al.add("R");
al.add("O");
al.add("G");
al.add("R");
al.add("A");
al.add("M");
al.add("M");
al.add("I");
al.add("N");
al.add("G");
// Displaying the Current LinkedList 
System.out.println("The Current LinkedList is: " + list);
// Appending the collection ArrayList to the 
// LinkedList and ArrayList will start inserting 
// from index 4(i.e. From Fifth Position )
list.addAll(4, al);
//  Displaying the new LinkedList
System.out.println("The new linked list is: " + list);
}
}

Output

输出量

D:\Programs>javac LinkList.java
D:\Programs>java LinkList
The Current LinkedList is: [J, A, V, A]
The new linked list is: [J, A, V, A, P, R, O, G, R, A, M, M, I, N, G]