Consider an Applet That Implements MouseListener

question 37

Multiple Choice

Consider an applet that implements MouseListener. Assume that the applet has five instance data, int x1, x2, y1, y2, and boolean inside. The four int values represent the two end-points of a box (x1, y1 is the upper left hand point and x2, y2 is the lower right hand point) . Which of the following properly defines code that will determine whenever the mouse button is clicked if the mouse is currently inside this box or not. If the mouse is inside the box, inside is set to True, otherwise it is set to false.

• A) public void mouseMoved(MouseEvent me) {
• If (me.getX( ) >= x1 && me.getX( ) <= x2 && me.getY( ) >= y1 && me.getY( ) <= y2)
• Inside = True;
• Else
• Inside = false;
• }
• B) public void mousePressed(MouseEvent me) {
• If (me.getX( ) >= x1 && me.getX( ) <= x2 && me.getY( ) >= y1 && me.getY( ) <= y2)
• Inside = True;
• Else
• Inside = false;
• }
• C) public void mouseReleased(MouseEvent me) {
• If (me.getX( ) >= x1 && me.getX( ) <= x2 && me.getY( ) >= y1 && me.getY( ) <= y2)
• Inside = True;
• Else
• Inside = false;
• }
• D) public void mouseEntered(MouseEvent me) {
• If (me.getX( ) >= x1 && me.getX( ) <= x2 && me.getY( ) >= y1 && me.getY( ) <= y2)
• Inside = True;
• Else
• Inside = false;
• }
• E) Requires both of the following methods: public void mouseEntered(MouseEvent me)
• {
• Inside = True;
• }
• Public void mouseExited(MouseEvent me)
• {
• Inside = false;
• }

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