// Producing a Collection of the values:
public static void printValues(Map m) {
System.out.print("Values: ");
Collection1.print(m.values());
}
// Producing a Set of the keys:
public static void printKeys(Map m) {
System.out.print("Size = " + m.size() + ", ");
System.out.print("keys: ");
Collection1.print(m.keySet());
}