public static void main(String[] args) { Hashtable<String> hashtable = new HashtableOpenAddressLinearProbingImpl<String>(10); hashtable.insert("A"); hashtable.insert("a"); hashtable.insert("B"); hashtable.insert("C"); hashtable.insert("D"); hashtable.insert("E"); hashtable.insert("F"); hashtable.insert("G"); hashtable.insert("H"); hashtable.insert("I"); System.out.println(hashtable); hashtable.remove("F"); System.out.println(hashtable); String a = hashtable.search("A"); String x = hashtable.search("X"); print("Should be found a : " + a); print("Should be found null !" + x); }