The MouseEvent Class

 

Here, src is a reference to the component that generated the event.  The system time at which the mouse event occurred is passed in when. 

The modifiers argument indicates which modifiers were pressed when a mouse event occurred. The coordinates of the mouse are passed in x and y. The click count is passed in clicks. 

The triggersPopup flag indicates if this event causes a pop-up menu to appear on this platform.

 Two commonly used methods in this class are getX( ) and getY( ). 

These return the X and Y coordinates of the mouse within the component when the event occurred. 

Point getPoint( ) It returns a Point object that contains the X,Y coordinates in its integer members: x and y. 

The translatePoint( ) method changes the location of the event. Its form is shown here: void translatePoint(int x, int y) Here, the arguments x and y are added to the coordinates of the event. 

The getClickCount( ) method obtains the number of mouse clicks for this event. Its signature is shown here: int getClickCount( ) 

The isPopupTrigger( ) method tests if this event causes a pop-up menu to appear on this platform. Its form is shown here:  boolean isPopupTrigger( ) 

 int getButton( ) It returns a value that represents the button that caused the event. The return value will be one of these constants defined by MouseEvent: 

NOBUTTON 

BUTTON1

 BUTTON2 

BUTTON3 

The NOBUTTON value indicates that no button was pressed or released. Java SE 6 added three methods to MouseEvent that obtain the coordinates of the mouse relative to the screen rather than the component. 

They are shown here: 

Point getLocationOnScreen( ) 

int getXOnScreen( )

 int getYOnScreen( ) 

The getLocationOnScreen( ) method returns a Point object that contains both the X and Y coordinate. The other two methods return the indicated coordinate