Question

Consider the following Java program. Describe what it does in response to specific operations of the mouse, and how it does it. (You are encouraged to run the program for yourself to test its behavior. Then read through the program carefully to understand how that behavior arises.)
import java.awt.event.*;
import javax.swing.*;
public class MouseWhisperer extends JFrame implements MouseListener {
MouseWhisperer() {
super("COME CLOSER");
setSize(300,100);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
addMouseListener(this);
setVisible(true);
}
public void mouseClicked(MouseEvent e) { setTitle("OUCH"); }
public void mousePressed(MouseEvent e) { setTitle("LET GO"); }
public void mouseReleased(MouseEvent e) { setTitle("WHEW"); }
public void mouseEntered(MouseEvent e) { setTitle("I SEE YOU"); }
public void mouseExited(MouseEvent e) { setTitle("COME CLOSER"); }
public static void main(String[] args) { new MouseWhisperer(); }
}

Answer 1

Answer:

Explanation:

This java code creates a windowed java application that is 300x100 pixels large. The title of the program which is located in the bar at the top of the program starts off by saying "Come Closer". If you move the mouse over the program the program detects it. Then if you press the program it changes the title to "Let Go". If you press the program and immediately let go it changes the title to "Ouch" but if you hold for 1 or 2 seconds and let go it changes the title to "Whew". Finally, if you move the mouse cursor away from the program it changes the title back to "Come Closer"