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## java.awt
Class MouseInfo

    java.lang.Object
      java.awt.MouseInfo

    public class MouseInfo

extends Object

`MouseInfo` provides methods for getting information about the mouse, such as mouse pointer location and the number of mouse buttons.

Since:
  1.5

Method Summary
`static int` | `getNumberOfButtons()` Returns the number of buttons on the mouse.
`static PointerInfo` | `getPointerInfo()` Returns a `PointerInfo` instance that represents the current location of the mouse pointer.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Method Detail

### getPointerInfo

    public static PointerInfo getPointerInfo()
                                      throws HeadlessException

  Returns a `PointerInfo` instance that represents the current location of the mouse pointer. The `GraphicsDevice` stored in this `PointerInfo` contains the mouse pointer. The coordinate system used for the mouse position depends on whether or not the `GraphicsDevice` is part of a virtual screen device. For virtual screen devices, the coordinates are given in the virtual coordinate system, otherwise they are returned in the coordinate system of the `GraphicsDevice`. See `GraphicsConfiguration` for more information about the virtual screen devices. On systems without a mouse, returns `null`.

  If there is a security manager, its `checkPermission` method is called with an `AWTPermission("watchMousePointer")` permission before creating and returning a `PointerInfo` object. This may result in a `SecurityException`.

  Returns:
    location of the mouse pointer
  Throws:
    `HeadlessException` - if GraphicsEnvironment.isHeadless() returns true
    `SecurityException` - if a security manager exists and its `checkPermission` method doesn't allow the operation
  Since:
    1.5
  See Also:
    `GraphicsConfiguration`, `SecurityManager.checkPermission(java.security.Permission)`, `AWTPermission`

### getNumberOfButtons

    public static int getNumberOfButtons()
                                  throws HeadlessException

  Returns the number of buttons on the mouse. On systems without a mouse, returns `-1`.

  Returns:
    number of buttons on the mouse
  Throws:
    `HeadlessException` - if GraphicsEnvironment.isHeadless() returns true
  Since:
    1.5

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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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