javax.swing
Class DefaultComboBoxModel<E>
- java.lang.Object
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- javax.swing.AbstractListModel<E>
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- javax.swing.DefaultComboBoxModel<E>
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- Type Parameters:
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E- the type of the elements of this model
- All Implemented Interfaces:
- Serializable, ComboBoxModel<E>, ListModel<E>, MutableComboBoxModel<E>
public class DefaultComboBoxModel<E> extends AbstractListModel<E> implements MutableComboBoxModel<E>, Serializable
The default model for combo boxes.
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Field Summary
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Fields inherited from class javax.swing.AbstractListModel
listenerList
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Constructor Summary
Constructors Constructor and Description DefaultComboBoxModel()Constructs an empty DefaultComboBoxModel object.DefaultComboBoxModel(E[] items)Constructs a DefaultComboBoxModel object initialized with an array of objects.DefaultComboBoxModel(Vector<E> v)Constructs a DefaultComboBoxModel object initialized with a vector.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method and Description voidaddElement(E anObject)Adds an item at the end of the model.EgetElementAt(int index)Returns the value at the specified index.intgetIndexOf(Object anObject)Returns the index-position of the specified object in the list.ObjectgetSelectedItem()Returns the selected itemintgetSize()Returns the length of the list.voidinsertElementAt(E anObject, int index)Adds an item at a specific index.voidremoveAllElements()Empties the list.voidremoveElement(Object anObject)Removes an item from the model.voidremoveElementAt(int index)Removes an item at a specific index.voidsetSelectedItem(Object anObject)Set the value of the selected item.-
Methods inherited from class javax.swing.AbstractListModel
addListDataListener, fireContentsChanged, fireIntervalAdded, fireIntervalRemoved, getListDataListeners, getListeners, removeListDataListener
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface javax.swing.ListModel
addListDataListener, removeListDataListener
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Constructor Detail
DefaultComboBoxModel
public DefaultComboBoxModel()
Constructs an empty DefaultComboBoxModel object.
DefaultComboBoxModel
public DefaultComboBoxModel(E[] items)
Constructs a DefaultComboBoxModel object initialized with an array of objects.- Parameters:
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items- an array of Object objects
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Method Detail
setSelectedItem
public void setSelectedItem(Object anObject)
Set the value of the selected item. The selected item may be null.- Specified by:
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setSelectedItemin interfaceComboBoxModel<E> - Parameters:
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anObject- The combo box value or null for no selection.
getSelectedItem
public Object getSelectedItem()
Description copied from interface:ComboBoxModelReturns the selected item- Specified by:
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getSelectedItemin interfaceComboBoxModel<E> - Returns:
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The selected item or
nullif there is no selection
getSize
public int getSize()
Description copied from interface:ListModelReturns the length of the list.
getElementAt
public E getElementAt(int index)
Description copied from interface:ListModelReturns the value at the specified index.- Specified by:
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getElementAtin interfaceListModel<E> - Parameters:
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index- the requested index - Returns:
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the value at
index
getIndexOf
public int getIndexOf(Object anObject)
Returns the index-position of the specified object in the list.- Parameters:
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anObject- - Returns:
- an int representing the index position, where 0 is the first position
addElement
public void addElement(E anObject)
Description copied from interface:MutableComboBoxModelAdds an item at the end of the model. The implementation of this method should notify all registeredListDataListeners that the item has been added.- Specified by:
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addElementin interfaceMutableComboBoxModel<E> - Parameters:
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anObject- the item to be added
insertElementAt
public void insertElementAt(E anObject, int index)
Description copied from interface:MutableComboBoxModelAdds an item at a specific index. The implementation of this method should notify all registeredListDataListeners that the item has been added.- Specified by:
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insertElementAtin interfaceMutableComboBoxModel<E> - Parameters:
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anObject- the item to be added -
index- location to add the object
removeElementAt
public void removeElementAt(int index)
Description copied from interface:MutableComboBoxModelRemoves an item at a specific index. The implementation of this method should notify all registeredListDataListeners that the item has been removed.- Specified by:
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removeElementAtin interfaceMutableComboBoxModel<E> - Parameters:
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index- location of the item to be removed
removeElement
public void removeElement(Object anObject)
Description copied from interface:MutableComboBoxModelRemoves an item from the model. The implementation of this method should should notify all registeredListDataListeners that the item has been removed.- Specified by:
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removeElementin interfaceMutableComboBoxModel<E> - Parameters:
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anObject- theObjectto be removed
removeAllElements
public void removeAllElements()
Empties the list.
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