Question 1

Consider the following code snippet: class MouseClickedListener implements ActionListener
{
Public void mouseClicked(MouseEvent event)
{
Int x = event.getX();
Int y = event.getY();
Component.moveTo(x,y);
}
}
What is wrong with this code?

Accepted Answer

The class implements ActionListener, but it should implement MouseListener to handle mouseClicked events.

Question 2

A/an ____ is used to capture mouse events.

Accepted Answer

A mouse listener is specifically designed to handle mouse events such as clicks, presses, releases, and movements.

Question 3

You wish to detect when the mouse is moved into a graphical component. Which methods of the MouseListener interface will provide this information?

Accepted Answer

The mouseEntered method of the MouseListener interface is invoked when the mouse enters a component.

Question 4

Consider the following code snippet: public class MyMouseListener
{
Public void mousePressed(MouseEvent event)
{
Double x;
Double y;
_______
System.out.println("x: " + x + ", y: " + y);
}
}
Which of the following statements should be in the indicated position to print out where the mouse was pressed?

Accepted Answer

The correct methods to get the x and y coordinates from a MouseEvent object are getX() and getY().

Question 5

What does the MouseAdapter class provide?

Accepted Answer

The MouseAdapter class provides default implementations for all methods in the MouseListener interface, allowing developers to override only the methods they need without implementing the entire interface.

Quiz 10: Interfaces

Consider the following code snippet: class MouseClickedListener implements ActionListener { Public void mouseClicked(MouseEvent event) { Int x = event.getX() ; Int y = event.getY() ; Component.moveTo(x,y) ; } } What is wrong with this code?

A/an ____ is used to capture mouse events.

You wish to detect when the mouse is moved into a graphical component. Which methods of the MouseListener interface will provide this information?

What does the MouseAdapter class provide?