Question

How to combine (merge) two ArrayLists in Java

Answer 1

import java.util.ArrayList;
   
public class MyClass {
    public static void main(String args[]) {
        ArrayList<String> al1 = new ArrayList<String>();
        al1.add("java");
        al1.add("c++");
        al1.add("c");
 
        ArrayList<String> al2 = new ArrayList<String>();
        al2.add("c#");
        al2.add("php");
        al2.add("javascript");
        al2.add("nodejs");
         
        ArrayList<String> al = new ArrayList<String>();
        al.addAll(al1);
        al.addAll(al2);
 
        for(String s: al) {
            System.out.println(s);
        }
    }
}
   
   
   
   
   
/*
run:
   
java
c++
c
c#
php
javascript
nodejs
 
*/

 

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