Java Collection Tutorial - Java List.addAll(Collection <? extends E > c)

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Syntax

List.addAll(Collection <? extends E > c) has the following syntax.

boolean addAll(Collection <? extends E > c)

Example

In the following code shows how to use List.addAll(Collection <? extends E > c) method.

import java.util.ArrayList;
import java.util.List;
//from   w  ww.  j a v  a  2 s .  c o m
public class Main {
  public static void main(String args[]) throws Exception {

    List<String> list = new ArrayList<String>();
    list.add("A");
    list.add("B");
    list.add("C");
    List<String> list2 = new ArrayList<String>();
    list2.add("X");
    list2.add("Y");
    list2.add("Z");
    list.addAll(list2);
    list.addAll(1, list2);

    System.out.println(list);
  }
}

The code above generates the following result.

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