import java.util.Collection;
import java.util.LinkedList;
public class CollectionTest <E> {
static <E> void testContain(Collection <E> c, E o) {
System.out.print("The collection " + c);
if (c.contains(o))
System.out.print(" contains");
else
System.out.print(" does not contain");
System.out.println(" the object " + o);
}
public static void main(String args[]) {
var list = new LinkedList <String>();
list.add("Petros");
list.add("Maria");
testContain(list, "Maria");
testContain(list, "John");
testContain(list, "Petros");
System.out.println("Number of elements = " + list.size());
}
}