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## javax.swing
Class AbstractSpinnerModel

    java.lang.Object
      |
      +--javax.swing.AbstractSpinnerModel

All Implemented Interfaces:
  SpinnerModel

Direct Known Subclasses:
  SpinnerDateModel, SpinnerListModel, SpinnerNumberModel

public abstract class AbstractSpinnerModel
extends Object
implements SpinnerModel

This class provides the ChangeListener part of the SpinnerModel interface that should be suitable for most concrete SpinnerModel implementations. Subclasses must provide an implementation of the minimum, maximum, and value properties and the getNextValue and getPreviousValue methods.

Since:
  1.4
See Also:
  `JSpinner`, `SpinnerModel`, `SpinnerListModel`, `SpinnerNumberModel`, `SpinnerDateModel`

Field Summary
`protected EventListenerList` | `listenerList` The list of ChangeListeners for this model.

Constructor Summary
`AbstractSpinnerModel()`

Method Summary
`void` | `addChangeListener(ChangeListener l)` Adds a ChangeListener to the model's listener list.
`protected void` | `fireStateChanged()` Run each ChangeListeners stateChanged() method.
`ChangeListener[]` | `getChangeListeners()` Returns an array of all the `ChangeListener`s added to this AbstractSpinnerModel with addChangeListener().
`EventListener[]` | `getListeners(Class listenerType)` Return an array of all the listeners of the given type that were added to this model.
`void` | `removeChangeListener(ChangeListener l)` Removes a ChangeListener from the model's listener list.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface javax.swing.SpinnerModel
`getNextValue, getPreviousValue, getValue, setValue`

Field Detail

### listenerList

    protected EventListenerList listenerList

  The list of ChangeListeners for this model. Subclasses may store their own listeners here.

Constructor Detail

### AbstractSpinnerModel

    public AbstractSpinnerModel()

Method Detail

### addChangeListener

    public void addChangeListener(ChangeListener l)

  Adds a ChangeListener to the model's listener list. The ChangeListeners must be notified when the models value changes.

  Specified by:
    `addChangeListener` in interface `SpinnerModel`
  Parameters:
    `l` - the ChangeListener to add
  See Also:
    `removeChangeListener(javax.swing.event.ChangeListener)`, `SpinnerModel.addChangeListener(javax.swing.event.ChangeListener)`

### removeChangeListener

    public void removeChangeListener(ChangeListener l)

  Removes a ChangeListener from the model's listener list.

  Specified by:
    `removeChangeListener` in interface `SpinnerModel`
  Parameters:
    `l` - the ChangeListener to remove
  See Also:
    `addChangeListener(javax.swing.event.ChangeListener)`, `SpinnerModel.removeChangeListener(javax.swing.event.ChangeListener)`

### getChangeListeners

    public ChangeListener[] getChangeListeners()

  Returns an array of all the `ChangeListener`s added to this AbstractSpinnerModel with addChangeListener().

  Returns:
    all of the `ChangeListener`s added or an empty array if no listeners have been added
  Since:
    1.4

### fireStateChanged

    protected void fireStateChanged()

  Run each ChangeListeners stateChanged() method.

  See Also:
    `SpinnerModel.setValue(java.lang.Object)`, `EventListenerList`

### getListeners

    public EventListener[] getListeners(Class listenerType)

  Return an array of all the listeners of the given type that were added to this model. For example to find all of the ChangeListeners added to this model:

       myAbstractSpinnerModel.getListeners(ChangeListener.class);

  Parameters:
    `listenerType` - the type of listeners to return, e.g. ChangeListener.class
  Returns:
    all of the objects receiving listenerType notifications from this model

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.