Share on Google+Share on Google+

Java arraylist merge

Advertisement
This section demonstrates how to merge the Java ArrayList

  • In Java Two arrays can be joined by using the Collection list.
  • Add all the elements of the both arrays into the list1, list2 respectively.
  • Use addAll() method to add list2 into the list1. Now the list2 is joined in to the list1.


Example Java Arraylist Merge
import java.util.*;
public class array3 {
    public static void main(String[] args) {
        int ar3[]={33,45,67,87,34,56};
        int ar4[]={5,8,9,22,3,4};
        List list1=new ArrayList();
        List list2=new ArrayList();
         for (int i = 0; i < ar3.length; i++) {
            list1.add(ar3[i]);
        }
   for (int i = 0; i < ar4.length; i++) {
            list2.add(ar4[i]);
        }
        list1.addAll(list2);
        System.out.println(list);           
    }
}
Output
33, 45, 67, 87, 34, 56, 5, 8, 9, 22, 3, 4

Advertisements

Posted on: October 23, 2009 If you enjoyed this post then why not add us on Google+? Add us to your Circles

Share this Tutorial Follow us on Twitter, or add us on Facebook or Google Plus to keep you updated with the recent trends of Java and other open source platforms.