| Interface | Description | 
|---|---|
| Enumeration<E> | |
| EventListener | |
| Iterator<E> | |
| Observer | 
| Class | Description | 
|---|---|
| ArrayList<E> | |
| Arrays | |
| BitSet | |
| Calendar | |
| Date | |
| Dictionary<K,V> | The  Dictionaryclass is the abstract parent of any
 class, such asHashtable, which maps keys to values. | 
| EventObject | |
| GregorianCalendar | |
| Hashtable<K,V> | This class implements a hash table, which maps keys to values. | 
| Json | |
| JsonEnumerator | |
| Locale | |
| Observable | |
| Properties | The  Propertiesclass represents a persistent set of
 properties. | 
| Random | |
| SimpleTimeZone | |
| Stack<E> | The Stack class represents a last-in-first-out (LIFO) stack of objects. | 
| StringTokenizer | |
| TimeZone | |
| Vector<E> | The  Vectorclass implements a growable array of
 objects. | 
| Exception | Description | 
|---|---|
| EmptyStackException | |
| MissingResourceException | |
| NoSuchElementException | |
| TooManyListenersException |