Class DefaultComboBoxModel<E>
java.lang.Object
javax.swing.AbstractListModel<E>
javax.swing.DefaultComboBoxModel<E>
- Type Parameters:
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.
- Since:
- 1.2
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Field Summary
Fields declared in class javax.swing.AbstractListModel
listenerList -
Constructor Summary
ConstructorsConstructorDescriptionConstructs an empty DefaultComboBoxModel object.DefaultComboBoxModel(E[] items) Constructs a DefaultComboBoxModel object initialized with an array of objects.Constructs a DefaultComboBoxModel object initialized with a vector. -
Method Summary
Modifier and TypeMethodDescriptionvoidaddAll(int index, Collection<? extends E> c) Adds all of the elements present in the collection, starting from the specified index.voidaddAll(Collection<? extends E> c) Adds all of the elements present in the collection.voidaddElement(E anObject) Adds an item at the end of the model.getElementAt(int index) Returns the value at the specified index.intgetIndexOf(Object anObject) Returns the index-position of the specified object in the list.Returns the selected itemintgetSize()Returns the length of the list.voidinsertElementAt(E anObject, int index) Adds an item at a specific index.voidEmpties 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 declared in class javax.swing.AbstractListModel
addListDataListener, fireContentsChanged, fireIntervalAdded, fireIntervalRemoved, getListDataListeners, getListeners, removeListDataListenerMethods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitMethods declared in interface javax.swing.ListModel
addListDataListener, removeListDataListener
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Constructor Details
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DefaultComboBoxModel
public DefaultComboBoxModel()Constructs an empty DefaultComboBoxModel object. -
DefaultComboBoxModel
Constructs a DefaultComboBoxModel object initialized with an array of objects.- Parameters:
items- an array of Object objects
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DefaultComboBoxModel
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Method Details
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setSelectedItem
Set the value of the selected item. The selected item may be null.- Specified by:
setSelectedItemin interfaceComboBoxModel<E>- Parameters:
anObject- The combo box value or null for no selection.
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getSelectedItem
Description copied from interface:ComboBoxModelReturns the selected item- Specified by:
getSelectedItemin interfaceComboBoxModel<E>- Returns:
- The selected item or
nullif there is no selection
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getSize
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getElementAt
Description copied from interface:ListModelReturns the value at the specified index.- Specified by:
getElementAtin interfaceListModel<E>- Parameters:
index- the requested index- Returns:
- the value at
index
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getIndexOf
Returns the index-position of the specified object in the list.- Parameters:
anObject- the object to return the index of- Returns:
- an int representing the index position, where 0 is the first position
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addElement
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:
addElementin interfaceMutableComboBoxModel<E>- Parameters:
anObject- the item to be added
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insertElementAt
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:
insertElementAtin interfaceMutableComboBoxModel<E>- Parameters:
anObject- the item to be addedindex- location to add the object
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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:
removeElementAtin interfaceMutableComboBoxModel<E>- Parameters:
index- location of the item to be removed
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removeElement
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:
removeElementin interfaceMutableComboBoxModel<E>- Parameters:
anObject- theObjectto be removed
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removeAllElements
public void removeAllElements()Empties the list. -
addAll
Adds all of the elements present in the collection.- Parameters:
c- the collection which contains the elements to add- Throws:
NullPointerException- ifcis null- Since:
- 11
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addAll
Adds all of the elements present in the collection, starting from the specified index.- Parameters:
index- index at which to insert the first element from the specified collectionc- the collection which contains the elements to add- Throws:
ArrayIndexOutOfBoundsException- ifindexdoes not fall within the range of number of elements currently heldNullPointerException- ifcis null- Since:
- 11
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