import java.util.ArrayList;
/*
* Example of addAll(Collection<? extends E> c) method
*/
public class ArrayListAddAllListExample
{
public static void main(String[] args)
{
ArrayList<String> arrayList1 = new ArrayList<String>();
arrayList1.add("Ram");
arrayList1.add("Dave");
arrayList1.add("Peter");
System.out.println("arrayList 1 : " + arrayList1);
ArrayList<String> ArrayList2 = new ArrayList<String>();
ArrayList2.add("Julia");
ArrayList2.add("Akram");
System.out.println("ArrayList 2 : " + ArrayList2);
/*
* Adding ArrayList2 collection elements to the arrayList1 collection
*/
arrayList1.addAll(ArrayList2);
System.out
.println("After adding ArrayList2 collection elements to the arrayList1 collection ");
System.out.println("arrayList 1 : " + arrayList1);
}
}
arrayList 1 : [Ram, Dave, Peter]
ArrayList 2 : [Julia, Akram]
After adding ArrayList2 collection elements to the arrayList1 collection
arrayList 1 : [Ram, Dave, Peter, Julia, Akram]
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
/*
* Example of addAll(Collection<? extends E> c) method
*/
public class ArrayListAddAllSetExample
{
public static void main(String[] args)
{
List<String> list = new ArrayList<String>();
list.add("Ram");
list.add("Dave");
list.add("Peter");
System.out.println("List : " + list);
Set<String> set = new HashSet<String>();
set.add("Julia");
set.add("Akram");
System.out.println("Set : " + set);
/*
* Adding Set collection elements to the list collection
*/
list.addAll(set);
System.out.println("List : " + list);
}
}
List : [Ram, Dave, Peter]
Set : [Julia, Akram]
List : [Ram, Dave, Peter, Julia, Akram]
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