Pong and menu help

[LightfireStorm]

hello I am having troble getting the paddle to go up and down... I don't know what else to try can some one help me?
here is my code:



import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

import static java.awt.event.KeyEvent.*;

/**
* This class implements a panel which can be inserted into a JFrame.
* The panel implements the Pong game.
*/
public class Pong2 extends JPanel implements Runnable, ActionListener{

// ball positioning variables
int ball_x, ball_y;
// ball move pixel size
int ball_dx=2, ball_dy=2;
// ball size
int ball_r = 20;
// rendering area pixel boundary variables
int x_left, x_right, y_top, y_bottom;
// the actual frame
JFrame frame;
// the color of the ball
Color ball_color = Color.blue;
// the amount of time we wait when moving the ball
long moveWait = 15;

int paddle_y, paddle_x, paddle_w, paddle_h, paddle_dy;




/**
* Constructor
*/
public Pong2(final JFrame frame){
addKeyListener(new ImputKeyEvents());
this.frame = frame;
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI asynchronously to
//ensure that all the swing resources are already set-up when we do this.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI(frame);
}
});
}

/**
* this is where we set up the UI
*/
protected void createAndShowGUI(final JFrame frame){

// initialize the frame
frame.setContentPane(this);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setJMenuBar(createAndInitMenuBar());
// register for window resize events
frame.addComponentListener(new ComponentAdapter() {
public void componentResized(ComponentEvent e) {
// This is only called when the user releases the mouse button.
x_right = frame.getContentPane().getWidth() - ball_r;
y_top = frame.getContentPane().getHeight() - ball_r;
}
});
// size the frame and show
frame.pack();
frame.setSize(500,500);
frame.setVisible(true);
getFocus(frame);
// start the ball off in the middle
ball_x = this.getWidth()/2;
ball_y = this.getHeight()/2;
// initialize the randering boundaries
x_left = 0;
x_right = this.getWidth() - ball_r;
y_top = this.getHeight() - ball_r;
y_bottom = 0;
paddle_y = 225;
paddle_x = 30;
paddle_w = 20;
paddle_h = 50;
paddle_y += paddle_dy;

}

/**
* creates the menu
*/
protected JMenuBar createAndInitMenuBar(){

JMenuBar menuBar;
JMenu menu, submenu;
JMenuItem menuItem;
JRadioButtonMenuItem rbMenuItem;
JCheckBoxMenuItem cbMenuItem;

//Create the menu bar.
menuBar = new JMenuBar();

//Build the first menu.
menu = new JMenu("Speed");
menu.setMnemonic(VK_S);
menu.getAccessibleContext().setAccessibleDescription("Set the speed of the ball");
menuBar.add(menu);

//a group of JMenuItems
menuItem = new JMenuItem("Increase", VK_I);
menuItem.setAccelerator(KeyStroke.getKeyStroke(VK_1, ActionEvent.ALT_MASK));
menuItem.getAccessibleContext().setAccessibleDescription("Increase the speed of the ball");
menuItem.addActionListener(this);
menu.add(menuItem);
menuItem = new JMenuItem("Decrease", VK_D);
menuItem.setAccelerator(KeyStroke.getKeyStroke(VK_2, ActionEvent.ALT_MASK));
menuItem.getAccessibleContext().setAccessibleDescription("Decrease the speed of the ball");
menuItem.addActionListener(this);
menu.add(menuItem);

//Build second menu in the menu bar.
menu = new JMenu("Another Menu");
menu.setMnemonic(VK_N);
menu.getAccessibleContext().setAccessibleDescription("This menu does nothing");
menuBar.add(menu);

return menuBar;
}

/**
* helper method which we use to get the focus
*/
public void getFocus(final JFrame frame)
{
EventQueue.invokeLater(new Runnable() {
public void run() {
frame.requestFocus();
}
});
}

/**
* implementation of the Runnable interface to be able to move the ball, etc.
*/
public void run(){

while(true){

ball_x += ball_dx;
if(ball_x <= x_left || ball_x >= x_right){
ball_dx *=-1;
ball_x += (2*ball_dx);
}

ball_y += ball_dy;
if(ball_y <= y_bottom || ball_y >= y_top){
ball_dy *=-1;
ball_y += (2*ball_dy);
}
/* if (collision()) {
ball_dx *= -1;
ball_x += (2 * ball_dx);

}*/
paddle_y += paddle_dy;
if (paddle_y >= y_top) {
paddle_dy -= 10;
}
paddle_y += paddle_dy;
if (paddle_y <= y_bottom) {
paddle_dy += 10;
}


repaint();

try{
Thread.sleep(moveWait);
}catch(InterruptedException ex){
System.out.println(ex);
}
}
}

/**
* all rendering occurs here
*/
public void paint(Graphics g){

g.setColor(Color.white);
g.fillRect(0,0,this.getWidth(),this.getHeight());

g.setColor(ball_color);
g.fillOval(ball_x,ball_y, ball_r, ball_r);

g.setColor(Color.black);
g.fillRect(paddle_x, paddle_y, paddle_w, paddle_h);

}

/**
* entry point into the program
*/
public static void main(String[] args){
// create the class(es)
JFrame frame = new JFrame("Pong #2");
Pong2 application = new Pong2(frame);
new Thread(application).start();
}

// Action Listener
public void actionPerformed(ActionEvent e) {
JMenuItem source = (JMenuItem) (e.getSource());
String s = "Action event detected."
+ "\n"
+ " Event source: " + source.getText()
+ " (an instance of " + getClassName(source) + ")";
System.out.println(s);
if (source.getText() == "Increase") {
moveWait -= 2;
if (moveWait < 1)
moveWait = 1;
}
if (source.getText() == "Decrease") {
moveWait += 2;
if (moveWait > 400)
moveWait = 400;
}
}
public class ImputKeyEvents extends KeyAdapter {
@Override
public void keyPressed(KeyEvent e) {
super.keyPressed(e);
int KeyCode = e.getKeyCode();
if (KeyCode == KeyEvent.VK_UP) {
paddle_dy += 5;
} else if (KeyCode == KeyEvent.VK_DOWN) {
paddle_dy -= 5;
}
}
@Override
public void keyReleased(KeyEvent e) {
int KeyCode = e.getKeyCode();
if (KeyCode == KeyEvent.VK_UP) {
paddle_dy += 0;
} else if (KeyCode == KeyEvent.VK_DOWN) {
paddle_dy += 0;
}
}
}


// Returns just the class name -- no package info.
protected String getClassName(Object o) {
String classString = o.getClass().getName();
int dotIndex = classString.lastIndexOf(".");
return classString.substring(dotIndex+1);
}

}