Retains only the elements in vector that are contained in the specified collection. In other words, removes from vector all of its elements that are not contained in the specified collection.
import java.util.ArrayList;
import java.util.List;
import java.util.Vector;
public class RetainAll {
public static void main(String[] args) {
Vector<String> vector = new Vector<String>();
//add element in vector
vector.add(“cricket”);
vector.add(“hockey”);
vector.add(“football”);
vector.add(“tennish”);
// print vector
System.out.println(“Vector = “+vector);
List<String> list = new ArrayList<String>();
list.add(“hockey”);
list.add(“php”);
list.add(“java”);
/*
* Retains only the elements in this
* Vector that are contained in the
* specified Collection.
*/
vector.retainAll(list);
System.out.println(“After retainAll vector is = “+vector);
}
}
Output:
Vector = [cricket, hockey, football, tennish]
After retainAll vector is = [hockey]