MutableComboBoxModel JDK 1.6)

public void addElement (Object obj)

Adds an item at the end of the model.

Adds an item at the end of the model. The implementation of this method
should notify all registered ListDataListeners that the
item has been added.
Parameters:
- obj - the Object to be added

public void insertElementAt (Object obj, int index)

Adds an item at a specific index.

Adds an item at a specific index. The implementation of this method
should notify all registered ListDataListeners that the
item has been added.
Parameters:
- obj - the Object to be added
- index - location to add the object

public void removeElement (Object obj)

Removes an item from the model.

Removes an item from the model. The implementation of this method should
should notify all registered ListDataListeners that the
item has been removed.
Parameters:
- obj - the Object to be removed

public void removeElementAt (int index)

Removes an item at a specific index.

Removes an item at a specific index. The implementation of this method
should notify all registered ListDataListeners that the
item has been removed.
Parameters:
- index - location of object to be removed