Java: The Mouse
The mouse is handled automatically by most components, so you
never have to know about it. For example, if someone
clicks on a button (JButton), you will receive an ActionEvent,
but you don't need to know (and shouldn't care) whether this was
from a mouse click on the button, or from a keyboard shortcut.
Graphics. If you are are drawing your own graphics (eg, in a JPanel)
and need to know where the user clicks, then you need to know about mouse
events.
You can easily add a mouse listener to a JPanel.
Important Classes and Interfaces
These classes are defined in java.awt.event. The first three are the most commonly used.
MouseEvent -- A MouseEvent object is passed to all mouse listeners.
The most useful information in a MouseEvent is the x and y
coordinates of the mouse cursor.MouseListener - Interface for mouse presses, releases, clicks, enters, and exits.MouseMotionListener - Interface for mouse moves and drags.MouseInputListener - Interface combination of MouseListener and MouseMotionListener.MouseAdapter -- Class useful for writing anonymous listener for mouse button presses, entering, ...MouseMotionAdapter -- Class useful for writing anonymous listener for mouse movement.
Mouse Pages