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Showing content from https://docs.oracle.com/en/java/javase/19/docs/api/java.desktop/java/awt/event/AdjustmentEvent.html below:

AdjustmentEvent (Java SE 19 & JDK 19)

All Implemented Interfaces:

Serializable

The adjustment event emitted by Adjustable objects like

and

. When the user changes the value of the scrolling component, it receives an instance of

.

An unspecified behavior will be caused if the id parameter of any particular AdjustmentEvent instance is not in the range from ADJUSTMENT_FIRST to ADJUSTMENT_LAST.

The type of any AdjustmentEvent instance takes one of the following values:

• UNIT_INCREMENT
• UNIT_DECREMENT
• BLOCK_INCREMENT
• BLOCK_DECREMENT
• TRACK

Assigning the value different from listed above will cause an unspecified behavior.

Since:

1.1

See Also:

• Adjustable
• AdjustmentListener
• Serialized Form

• Field Summary

  Fields

  static final int

  Marks the first integer id for the range of adjustment event ids.

  static final int

  Marks the last integer id for the range of adjustment event ids.

  static final int

  The adjustment value changed event.

  static final int

  The block decrement adjustment type.

  static final int

  The block increment adjustment type.

  static final int

  The absolute tracking adjustment type.

  static final int

  The unit decrement adjustment type.

  static final int

  The unit increment adjustment type.

  Fields declared in class java.awt.AWTEventACTION_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
• Constructor Summary

  Constructors

  Constructs an AdjustmentEvent object with the specified Adjustable source, event type, adjustment type, and value.

  Constructs an AdjustmentEvent object with the specified Adjustable source, event type, adjustment type, and value.

• Method Summary

  Returns the Adjustable object where this event originated.

  int

  Returns the type of adjustment which caused the value changed event.

  int

  Returns the current value in the adjustment event.

  boolean

  Returns true if this is one of multiple adjustment events.

• Field Details
  • ADJUSTMENT_FIRST

    public static final int ADJUSTMENT_FIRST

    Marks the first integer id for the range of adjustment event ids.

    See Also:

    • Constant Field Values

  • ADJUSTMENT_LAST

    public static final int ADJUSTMENT_LAST

    Marks the last integer id for the range of adjustment event ids.

    See Also:

    • Constant Field Values

  • ADJUSTMENT_VALUE_CHANGED

    public static final int ADJUSTMENT_VALUE_CHANGED

    The adjustment value changed event.

    See Also:

    • Constant Field Values

  • UNIT_INCREMENT @Native public static final int UNIT_INCREMENT

    The unit increment adjustment type.

    See Also:

    • Constant Field Values

  • UNIT_DECREMENT @Native public static final int UNIT_DECREMENT

    The unit decrement adjustment type.

    See Also:

    • Constant Field Values

  • BLOCK_DECREMENT @Native public static final int BLOCK_DECREMENT

    The block decrement adjustment type.

    See Also:

    • Constant Field Values

  • BLOCK_INCREMENT @Native public static final int BLOCK_INCREMENT

    The block increment adjustment type.

    See Also:

    • Constant Field Values

  • TRACK @Native public static final int TRACK

    The absolute tracking adjustment type.

    See Also:

    • Constant Field Values

• Constructor Details
  • AdjustmentEvent public AdjustmentEvent(Adjustable source, int id, int type, int value)

    Constructs an

    AdjustmentEvent

    object with the specified

    Adjustable

    source, event type, adjustment type, and value.

    This method throws an IllegalArgumentException if source is null.

    Parameters:

    source - The Adjustable object where the event originated

    id - An integer indicating the type of event. For information on allowable values, see the class description for AdjustmentEvent

    type - An integer indicating the adjustment type. For information on allowable values, see the class description for AdjustmentEvent

    value - The current value of the adjustment

    Throws:

    IllegalArgumentException - if source is null

    See Also:

    • EventObject.getSource()
    • AWTEvent.getID()
    • getAdjustmentType()
    • getValue()

  • AdjustmentEvent public AdjustmentEvent(Adjustable source, int id, int type, int value, boolean isAdjusting)

    Constructs an

    AdjustmentEvent

    object with the specified Adjustable source, event type, adjustment type, and value.

    This method throws an IllegalArgumentException if source is null.

    Parameters:

    source - The Adjustable object where the event originated

    id - An integer indicating the type of event. For information on allowable values, see the class description for AdjustmentEvent

    type - An integer indicating the adjustment type. For information on allowable values, see the class description for AdjustmentEvent

    value - The current value of the adjustment

    isAdjusting - A boolean that equals true if the event is one of a series of multiple adjusting events, otherwise false

    Throws:

    IllegalArgumentException - if source is null

    Since:

    1.4

    See Also:

    • EventObject.getSource()
    • AWTEvent.getID()
    • getAdjustmentType()
    • getValue()
    • getValueIsAdjusting()

• Method Details
  • getAdjustable

    Returns the Adjustable object where this event originated.

    Returns:

    the Adjustable object where this event originated

  • getValue

    public int getValue()

    Returns the current value in the adjustment event.

    Returns:

    the current value in the adjustment event

  • getAdjustmentType

    public int getAdjustmentType()

    Returns:

    one of the adjustment values listed above

  • getValueIsAdjusting

    public boolean getValueIsAdjusting()

    Returns true if this is one of multiple adjustment events.

    Returns:

    true if this is one of multiple adjustment events, otherwise returns false

    Since:

    1.4

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