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Java™ Platform Standard Ed. 6 |
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java.lang.Object java.util.EventObject java.awt.AWTEvent java.awt.event.TextEvent
public class TextEvent
A semantic event which indicates that an object's text changed.
This high-level event is generated by an object (such as a TextComponent)
when its text changes. The event is passed to
every TextListener
object which registered to receive such
events using the component's addTextListener
method.
The object that implements the TextListener
interface gets
this TextEvent
when the event occurs. The listener is
spared the details of processing individual mouse movements and key strokes
Instead, it can process a "meaningful" (semantic) event like "text changed".
TextComponent
,
TextListener
,
Tutorial: Writing a Text Listener,
Serialized FormField Summary | |
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static int |
TEXT_FIRST
The first number in the range of ids used for text events. |
static int |
TEXT_LAST
The last number in the range of ids used for text events. |
static int |
TEXT_VALUE_CHANGED
This event id indicates that object's text changed. |
Fields inherited from class java.util.EventObject |
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source |
Constructor Summary | |
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TextEvent(Object source,
int id)
Constructs a TextEvent object. |
Method Summary | |
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String |
paramString()
Returns a parameter string identifying this text event. |
Methods inherited from class java.awt.AWTEvent |
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consume, getID, isConsumed, setSource, toString |
Methods inherited from class java.util.EventObject |
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getSource |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
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public static final int TEXT_FIRST
public static final int TEXT_LAST
public static final int TEXT_VALUE_CHANGED
Constructor Detail |
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public TextEvent(Object source, int id)
TextEvent
object.
Note that passing in an invalid id
results in
unspecified behavior. This method throws an
IllegalArgumentException
if source
is null
.
source
- the (TextComponent
) object that
originated the eventid
- an integer that identifies the event type
IllegalArgumentException
- if source
is nullMethod Detail |
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public String paramString()
paramString
in class AWTEvent
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Java™ Platform Standard Ed. 6 |
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