java - Moving a rectangle in JPanel with arrow keys using KeyListener -

I am trying to create a JPanel with arrow keys. It does not work, I believe that this is my internal class which increases the KeyAdapter I'm not even sure that ActionListener was implemented The square I have created does not matter because it is just the frame

  package, JerryWorld; Import javax.swing *; Import java.awt. *; Import java.awt.event. *; Public class Jerry JPLNL applies ActionListener {int SizeX, SizeY, PosX, Posy, Velx, Vely; Image image; Timer time = new timer (1, this); Public Jerry () {Image I = New Immune (); AddKeyListener (new AL ()); Time.start (); Img = i.getImage (); PosX = 375; Posy = 250; } Public Zero Color (Graphics G) {Graphics2D g2d = (Graphics2D) G; G2d.fillRect (PosX, Posy, 50, 100); } Public Zero Functionality (ActionEvent e) {PosX = PosX + Velx; Repaint (); } Private class provides AL KeyAdapter {public zero keypress (KeyEvent e) {int key = e.getKeyCode (); Println ("yay!"); If (key == KeyEvent.VK_LEFT) VelX = -1; Else if (key == KeyEvent.VK_RIGHT) Wells = 1; } Public Zero Key Relayed (Key Event E) {int key = e.getKeyCode (); If (key == KeyEvent.VK_LEFT) Wells = 0; Else if (key == KeyEvent.VK_RIGHT) VelX = 0; }}}    
 
 
 
 You want to search this site for similar questions , As they usually get the same issue and the same answer.  
 They will tell you that the focus is a problem because the keygenist of a component will not work until it has its focus.  
 Whether you want to use KeyListener at all but not in key binding.  
 They will tell you that  paint (...)  rather than  paintComponent (...)  unless you are sure that you Want to override component boundaries and children's painting (you do not).  
 They can give you super method  paintComponent (...) .   
 Also see it inside