MyHashTable_.java

class NotFoundException extends Exception {} 

public interface MyHashTable_<K, T> { 
 // Insert new object with given key 
 public int insert(K key, T obj); 
 
 // Update object for given key 
 public int update(K key, T obj); 
 
 // Delete object for given key 
 public int delete(K key); 
 
 // Does an object with this key exist? 
 public boolean contains(K key); 
 
 // Return the object with given key 
 public T get(K key) throws NotFoundException; 
 
 // ”Address” of object with given key (explained below) 
 public String address(K key) throws NotFoundException; 
}