ArrayListRetainAll

import java.util.ArrayList;
import java.util.Iterator;
public class ArrayListRetainAll{
    public static void main (String[] args){
        //membuat arraylist1
        ArrayList<String> al = new ArrayList<String>();

        //menambahkan objek
        al.add("Ani");
        al.add("Budi");
        al.add("Cecep");
        al.add("Dani");

        //membuat arraylist2
        ArrayList<String> al2 = new ArrayList <String>();

        //menambahkan objek
        al2.add("Dani");
        al2.add("Edo");

        //remove al2
        al.retainAll(al2);

        //menampilkan isi
        Iterator itr=al.iterator();
        while(itr.hasNext()){
            System.out.println(itr.next());
        }
    }
}