9. 47. 12. Retaining Another Collection: public boolean retainAll(Collection c)
Only those elements within the collection argument are kept within the vector.
Everything else is removed instead.
import java.util.Vector;
public class MainClass { public static void main(String args[]) {
Vector v = new Vector(5); for (int i = 0; i < 10; i++) {
v.add(0,i);
}
System.out.println(v);
Vector v2 = new Vector(5); for (int i = 0; i < 5; i++) {
v2.add(0,i);
}
System.out.println(v2);
System.out.println(v2.equals(v));