Java™ Platform
Standard Ed. 6

java.awt.event
Class TextEvent

java.lang.Object
  extended by java.util.EventObject
      extended by java.awt.AWTEvent
          extended by java.awt.event.TextEvent
All Implemented Interfaces:
Serializable

public class TextEvent
extends AWTEvent

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".

Since:
1.1
See Also:
TextComponent, TextListener, Tutorial: Writing a Text Listener, Serialized Form

Field Summary
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.awt.AWTEvent
ACTION_EVENT_MASK, ADJUSTMENT_EVENT_MASK, COMPONENT_EVENT_MASK, consumed, CONTAINER_EVENT_MASK, FOCUS_EVENT_MASK, HIERARCHY_BOUNDS_EVENT_MASK, HIERARCHY_EVENT_MASK, id, INPUT_METHOD_EVENT_MASK, INVOCATION_EVENT_MASK, ITEM_EVENT_MASK, KEY_EVENT_MASK, MOUSE_EVENT_MASK, MOUSE_MOTION_EVENT_MASK, MOUSE_WHEEL_EVENT_MASK, PAINT_EVENT_MASK, RESERVED_ID_MAX, TEXT_EVENT_MASK, WINDOW_EVENT_MASK, WINDOW_FOCUS_EVENT_MASK, WINDOW_STATE_EVENT_MASK
 
Fields inherited from class java.util.EventObject
source
 
Constructor Summary
TextEvent(Object source, int id)
          Constructs a TextEvent object.
 
Method Summary
 String paramString()
          Returns a parameter string identifying this text event.
 
Methods inherited from class java.awt.AWTEvent
consume, getID, isConsumed, setSource, toString
 
Methods inherited from class java.util.EventObject
getSource
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

TEXT_FIRST

public static final int TEXT_FIRST
The first number in the range of ids used for text events.

See Also:
Constant Field Values

TEXT_LAST

public static final int TEXT_LAST
The last number in the range of ids used for text events.

See Also:
Constant Field Values

TEXT_VALUE_CHANGED

public static final int TEXT_VALUE_CHANGED
This event id indicates that object's text changed.

See Also:
Constant Field Values
Constructor Detail

TextEvent

public TextEvent(Object source,
                 int id)
Constructs a TextEvent object.

Note that passing in an invalid id results in unspecified behavior. This method throws an IllegalArgumentException if source is null.

Parameters:
source - the (TextComponent) object that originated the event
id - an integer that identifies the event type
Throws:
IllegalArgumentException - if source is null
Method Detail

paramString

public String paramString()
Returns a parameter string identifying this text 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

Java™ Platform
Standard Ed. 6

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

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