Help with non-working JButton

Hello I'm new to the forum, I wanted to make a proper introduction but I can't find the right place to make it Huh

I'm having some trouble with my JButtons. I'm trying to make a simple rock-paper-scissors game where the player picks either rock, paper, or scissors, but for some reason my JButtons for the user to pick won't work. For right now I just want the player score to increase by one whenever the user clicks on one of the buttons. I know this is very newbie stuff but I've gone over the code a hundred times and I just can't figure out whats wrong. Thanks in advance.

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import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Random;

import javax.swing.*;


public class GamePanel implements ActionListener{
   
   int playersco = 0;
   static int compsco = 0;
   
   
   
   String playerroc, playersis, playerpap, player;
   static String compprint, comproc, comppap, compsis, comp;
   JButton roc, pap, sis;
   JPanel selectpanel, gamtex, compout;
   JLabel playerscore, compscore, compchoice;
   
   public JPanel ContentPane(){
      
      JPanel masterPanel = new JPanel();
      masterPanel.setLayout(null);
      
      gamtex = new JPanel();
      gamtex.setLayout(null);
      gamtex.setLocation(100, 10);
      gamtex.setSize(155,20);
      gamtex.setBackground(Color.yellow);
      masterPanel.add(gamtex);
      
      playerscore = new JLabel(""+ playersco +" Player");
      playerscore.setLocation(0,0);
      playerscore.setSize(90,20);
      playerscore.setHorizontalAlignment(0);
      gamtex.add(playerscore);
      
      compscore = new JLabel(""+compsco+" Computer");
      compscore.setLocation(20,0);
      compscore.setSize(190,20);
      compscore.setHorizontalAlignment(0);
      gamtex.add(compscore);
      
      compout = new JPanel();
      compout.setLayout(null);
      compout.setLocation(130,35);
      compout.setSize(110,100);
      masterPanel.add(compout);
      //compout.setBackground(Color.DARK_GRAY);
      
      compchoice = new JLabel(compprint);
      compchoice.setLocation(0,0);
      compchoice.setSize(85,20);
      compout.add(compchoice);
      
      selectpanel = new JPanel();
      selectpanel.setLayout(null);
      selectpanel.setLocation(0,15);
      selectpanel.setSize(100,190);
      //selectpanel.setBackground(Color.green);
      masterPanel.add(selectpanel);
      
      roc = new JButton("Rock");
      roc.setLocation(10,5);
      roc.setSize(80,30);
      roc.addActionListener(this);
      selectpanel.add(roc);
      
      pap = new JButton("Paper");
      pap.setLocation(10,45);
      pap.setSize(80,30);
      pap.addActionListener(this);
      selectpanel.add(pap);
      
      sis = new JButton("Sissors");
      sis.setLocation(10,85);
      sis.setSize(80,30);
      sis.addActionListener(this);
      selectpanel.add(sis);
      
      masterPanel.setOpaque(true);
      return masterPanel;
   }
   
   public void actionPerformed(ActionEvent e){
      
      if(e.getSource() == roc ){
         playersco = playersco +1;
         player = playerroc;
      }else if(e.getSource() == pap){
         playersco = playersco +1;
         player = playerpap;
      }else if(e.getSource() == sis){
         playersco = playersco +1;
         player = playersis;
      }
      
   
   }
   
   
   public static  void comprandom(){
      
      Random randomGenerator = new Random();
       int randomInt = randomGenerator.nextInt(3);
       if(randomInt == 1){
          
          comp = compsis; 
          compprint = "Sissors!";
         compsco = compsco+1;
       }else if(randomInt == 2){
         
          comp = comproc ;
          compprint = "Rock!"; 
         compsco = compsco+1;
       }else
       {
          comp = comppap ;
          compprint = "Paper!";
         compsco = compsco + 1;
       }
   }
      
   

   
   private static void showgame(){
      
      JFrame frame = new JFrame("Rock, Paper, Sissors");
      
      GamePanel show = new GamePanel();
      frame.setContentPane(show.ContentPane());
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      frame.setSize(280, 190);
      frame.setVisible(true);
      
   }
   
   public static void main(String[] args){
      
      SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                  comprandom();
               showgame();
               
              
            }
        });
      
         
   
   }


}