AccessibleValue (Java SE 11 & JDK 11 )
Keywords: javax.accessibility.AccessibleValue interface

Module java.desktop
Package javax.accessibility

## Interface AccessibleValue

- All Known Implementing Classes:
    `AbstractButton.AccessibleAbstractButton`, `Button.AccessibleAWTButton`, `Checkbox.AccessibleAWTCheckbox`, `CheckboxMenuItem.AccessibleAWTCheckboxMenuItem`, `JButton.AccessibleJButton`, `JCheckBox.AccessibleJCheckBox`, `JCheckBoxMenuItem.AccessibleJCheckBoxMenuItem`, `JInternalFrame.AccessibleJInternalFrame`, `JInternalFrame.JDesktopIcon.AccessibleJDesktopIcon`, `JMenu.AccessibleJMenu`, `JMenuItem.AccessibleJMenuItem`, `JProgressBar.AccessibleJProgressBar`, `JRadioButton.AccessibleJRadioButton`, `JRadioButtonMenuItem.AccessibleJRadioButtonMenuItem`, `JScrollBar.AccessibleJScrollBar`, `JSlider.AccessibleJSlider`, `JSpinner.AccessibleJSpinner`, `JSplitPane.AccessibleJSplitPane`, `JToggleButton.AccessibleJToggleButton`, `Menu.AccessibleAWTMenu`, `MenuItem.AccessibleAWTMenuItem`, `PopupMenu.AccessibleAWTPopupMenu`, `Scrollbar.AccessibleAWTScrollBar`

      public interface AccessibleValue

  The `AccessibleValue` interface should be supported by any object that supports a numerical value (e.g., a scroll bar). This interface provides the standard mechanism for an assistive technology to determine and set the numerical value as well as get the minimum and maximum values. Applications can determine if an object supports the `AccessibleValue` interface by first obtaining its `AccessibleContext` (see `Accessible`) and then calling the `AccessibleContext.getAccessibleValue()` method. If the return value is not `null`, the object supports this interface.
  See Also:
    `Accessible`, `Accessible.getAccessibleContext()`, `AccessibleContext`, `AccessibleContext.getAccessibleValue()`

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `Number` | `getCurrentAccessibleValue()` | Get the value of this object as a `Number`.
    `Number` | `getMaximumAccessibleValue()` | Get the maximum value of this object as a `Number`.
    `Number` | `getMinimumAccessibleValue()` | Get the minimum value of this object as a `Number`.
    `boolean` | `setCurrentAccessibleValue​(Number n)` | Set the value of this object as a `Number`.

- - ### Method Detail

    - #### getCurrentAccessibleValue

          Number getCurrentAccessibleValue()

      Get the value of this object as a `Number`. If the value has not been set, the return value will be `null`.
      Returns:
        value of the object
      See Also:
        `setCurrentAccessibleValue(java.lang.Number)`

    - #### setCurrentAccessibleValue

          boolean setCurrentAccessibleValue​(Number n)

      Set the value of this object as a `Number`.
      Parameters:
        `n` - the number to use for the value
      Returns:
        `true` if the value was set; else `false`
      See Also:
        `getCurrentAccessibleValue()`

    - #### getMinimumAccessibleValue

          Number getMinimumAccessibleValue()

      Get the minimum value of this object as a `Number`.
      Returns:
        minimum value of the object; `null` if this object does not have a minimum value
      See Also:
        `getMaximumAccessibleValue()`

    - #### getMaximumAccessibleValue

          Number getMaximumAccessibleValue()

      Get the maximum value of this object as a `Number`.
      Returns:
        maximum value of the object; `null` if this object does not have a maximum value
      See Also:
        `getMinimumAccessibleValue()`