Question

How to insert all elements of an ArrayList to specified Index of other ArrayList in Java

Answer 1

package javaapplication1;

import java.util.ArrayList;

public class JavaApplication1 {

    public static void main(String[] args) {

        ArrayList arrList = new ArrayList();
   
        arrList.add("Java");
        arrList.add("C#");
        arrList.add("C++");
        arrList.add("PHP");
        arrList.add("JavaScript");
        arrList.add("C");
        arrList.add("Swift");
        
        ArrayList arrList2 = new ArrayList();
        
        arrList2.add("aaa");
        arrList2.add("bbb");
        
        arrList.addAll(2, arrList2);

        System.out.println(arrList);
  }
}
  
/*
run:
 
[Java, C#, aaa, bbb, C++, PHP, JavaScript, C, Swift]
  
*/

 

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