I have Dots.java and DotsPanel.java. I need to add a mouseDragged Listener to it so that when you click and hold the mouse and drag it across the screen, it creates multiple squares.

Dots.java

//Dots.java //Michael Dimond Jr //CSCI 1302 //Lab #2 //9/6/2017

import javax.swing.JFrame;

public class Dots { //----------------------------------------------------------------- // Creates and displays the application frame. //----------------------------------------------------------------- public static void main(String[] args) { JFrame frame = new JFrame("Dots"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.getContentPane().add(new DotsPanel());

frame.pack(); frame.setVisible(true); } }

DotsPanel.java

import java.awt.Color; import java.awt.Dimension; import java.awt.Graphics; import java.awt.Point; import java.awt.Rectangle; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.security.SecureRandom; import java.util.ArrayList; import java.util.Random;

import javax.swing.JPanel; import javax.swing.Timer;

public class DotsPanel extends JPanel {

private final int SIZE = 6; // radius of each dot

private ArrayList pointList;

AnimationListener am;

// -----------------------------------------------------------------

// Constructor: Sets up this panel to listen for mouse events.

// -----------------------------------------------------------------

public DotsPanel() {

pointList = new ArrayList();

addMouseListener(new DotsListener()); am = new AnimationListener(); am.timer.start();

setBackground(Color.black);

setPreferredSize(new Dimension(300, 200));

}

private void setColor(Color color) {

}

public void paint(Graphics page) {

super.paintComponent(page);

SecureRandom randomNum = new SecureRandom();

Color color = new Color(randomNum.nextInt(256), randomNum.nextInt(256),

randomNum.nextInt(256));

page.setColor(color);

for (Point spot : pointList)

page.fillRect(spot.x - SIZE, spot.y - SIZE, SIZE * 2, SIZE * 2);

page.drawString("Count: " + pointList.size(), 5, 15);

}

private class AnimationListener implements ActionListener { int xRand[]; int yRand[]; Random rand;

public AnimationListener() { rand = new Random();

xRand = new int[1000]; yRand = new int[1000]; for (int i = 0; i < 1000; i++) { xRand[i] = rand.nextInt(20) - 10; yRand[i] = rand.nextInt(20) - 10; }

} private Timer timer = new Timer(50, this);

public void actionPerformed(ActionEvent e) { Rectangle window = getBounds();

for (int i = 0; i < pointList.size(); i++) { Point spot = pointList.get(i); spot.x += xRand[i]; spot.y += yRand[i];

if (spot.x <= 0) { xRand[i] = Math.abs(xRand[i]); } else if (spot.x >= window.width - (SIZE*2)) { xRand[i] = -Math.abs(xRand[i]); }

if (spot.y <= 0) { yRand[i] = Math.abs(yRand[i]); } else if (spot.y >= window.height - (SIZE*2)) { yRand[i] = -Math.abs(yRand[i]); } }

repaint();

}

}

private class DotsListener implements MouseListener {

public void mousePressed(MouseEvent event) {

pointList.add(event.getPoint());

repaint();

} public void mouseClicked(MouseEvent event) {

}

public void mouseReleased(MouseEvent event) {

}

public void mouseEntered(MouseEvent event) {

}

public void mouseExited(MouseEvent event) {

}

}

}