Java Tutorial - Jens.Trapp@DLR.De

Data Types

Class	Description	Put Function	Get Function
`Vector`	List or expendible array	`addElement(obj)`	`elementAt(i)`
`Stack`	FIFO extension for Vector	`push(obj)`	`pop()`
`Hashtable`	Array with `Object`'s as key instead of indizes	`put(key, obj)`	`get(key)`
`Properties`	Key-Strings and IO support. (System Properties)	`put(key, obj)`	`get(key)`

Retrieving Objects from these types require casting.
```
	String string = (String) vector.elementAt(1);
```
Generalized loop mechanism with Enumeration.

Java Tutorial - Standard Classes

Jens Trapp, 1997