Package Summary Overview Summary

class:ItemEvent [NONE]

All Implemented Interfaces:

Serializable
```
public class ItemEvent
extends AWTEvent
```
A semantic event which indicates that an item was selected or deselected. This high-level event is generated by an ItemSelectable object (such as a List) when an item is selected or deselected by the user. The event is passed to every ItemListener object which registered to receive such events using the component's addItemListener method.
The object that implements the ItemListener interface gets this ItemEvent when the event occurs. The listener is spared the details of processing individual mouse movements and mouse clicks, and can instead process a "meaningful" (semantic) event like "item selected" or "item deselected".

An unspecified behavior will be caused if the id parameter of any particular ItemEvent instance is not in the range from ITEM_FIRST to ITEM_LAST.

The stateChange of any ItemEvent instance takes one of the following values:
- ItemEvent.SELECTED
- ItemEvent.DESELECTED
Assigning the value different from listed above will cause an unspecified behavior.
Since:

1.1

See Also:

ItemSelectable, ItemListener, Tutorial: Writing an Item Listener , Serialized Form

field:ITEM_FIRST [NONE]

ITEM_FIRST
```
public static final int ITEM_FIRST
```
The first number in the range of ids used for item events.

See Also:

Constant Field Values

field:ITEM_LAST [NONE]

ITEM_LAST
```
public static final int ITEM_LAST
```
The last number in the range of ids used for item events.

See Also:

Constant Field Values

field:ITEM_STATE_CHANGED [NONE]

ITEM_STATE_CHANGED
```
public static final int ITEM_STATE_CHANGED
```
This event id indicates that an item's state changed.

See Also:

Constant Field Values

field:SELECTED [NONE]

SELECTED
```
public static final int SELECTED
```
This state-change value indicates that an item was selected.

See Also:

Constant Field Values

field:DESELECTED [NONE]

DESELECTED
```
public static final int DESELECTED
```
This state-change-value indicates that a selected item was deselected.

See Also:

Constant Field Values

constructor:<init>(java.awt.ItemSelectable,int,java.lang.Object,int) [NONE]

ItemEvent
```
public ItemEvent(ItemSelectable source,
                 int id,
                 Object item,
                 int stateChange)
```
Constructs an ItemEvent object.
This method throws an IllegalArgumentException if source is null.

Parameters:

source - The ItemSelectable object that originated the event

id - The integer that identifies the event type. For information on allowable values, see the class description for ItemEvent

item - An object -- the item affected by the event

stateChange - An integer that indicates whether the item was selected or deselected. For information on allowable values, see the class description for ItemEvent

Throws:

IllegalArgumentException - if source is null

See Also:

getItemSelectable(), AWTEvent.getID(), getStateChange()

method:getItemSelectable() [NONE]

getItemSelectable
```
public ItemSelectable getItemSelectable()
```
Returns the originator of the event.

Returns:

the ItemSelectable object that originated the event.

method:getItem() [NONE]

getItem
```
public Object getItem()
```
Returns the item affected by the event.

Returns:

the item (object) that was affected by the event

method:getStateChange() [NONE]

getStateChange
```
public int getStateChange()
```
Returns the type of state change (selected or deselected).

Returns:

an integer that indicates whether the item was selected or deselected

See Also:

SELECTED, DESELECTED

method:paramString() [NONE]

paramString
```
public String paramString()
```
Returns a parameter string identifying this item event. This method is useful for event-logging and for debugging.

Overrides:

paramString in class AWTEvent

Returns:

a string identifying the event and its attributes

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