/*
Insert all elements of other Collection to Specified Index of Java ArrayList Example
This Java Example shows how to insert all elements of other Collection object
at specified index of Java ArrayList object using addAll method.
*/
import java.util.ArrayList;
import java.util.Vector;
public class InsertAllElementsOfOtherCollectionToArrayListExample {
public static void main(String[] args) {
//create an ArrayList object
ArrayList arrayList = new ArrayList();
//Add elements to Arraylist
arrayList.add("1");
arrayList.add("2");
arrayList.add("3");
//create a new Vector object
Vector v = new Vector();
v.add("4");
v.add("5");
/*
To insert all elements of another Collection to sepcified index of ArrayList use
boolean addAll(int index, Collection c) method.
It returns true if the ArrayList was changed by the method call.
*/
//insert all elements of Vector to ArrayList at index 1
arrayList.addAll(1,v);
//display elements of ArrayList
System.out.println("After inserting all elements of Vector at index 1, ArrayList contains..");
for(int i=0; i<arrayList.size(); i++)
System.out.println(arrayList.get(i));
}
}
/*
Output would be
After inserting all elements of Vector at index 1, ArrayList contains..
1
4
5
2
3
*/
