Thread: Have I laid out my code wrong?

Hi guys, I'm working on my first real project with a GUI but I feel that my code is confusing and I tend to be jumping from class to class a lot. Could someone please take a look and see if everything is okay? I'm mainly worried that I shouldn't be jumping back and forth all the time

The program is not finished yet so some things may be wrong or not completed. There is a lot of code >.< sorry about that, I've separated the different classes as well.

import 
import java.awt.GridLayout;
 
import javax.swing.JFrame;
// Brings all the code together
public class MainFrame extends JFrame{
 
	private Player player;
	private Generate generate;
	private GameListener listener;
 
 
	public MainFrame(){
		super("Hi-Lo game");
 
		setLayout(new GridLayout(2,2,3,3));
		// Creating instances of the 2 main classes here
		player = new Player();
		add(player);
		generate = new Generate();
		add(generate);
 
		//Not sure if this is correct. It will allow me to use the same instances
		listener = new GameListener(player, generate);
 
		setSize(400, 200);
		setVisible(true);
		setResizable(false);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
 
}

import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
 
// Made into a panel to allow a nice layout
public class Player extends JPanel{
 
	//Buttons for the player class as well as displays on bet/bank
	protected static JButton bet5Button;
	protected static JButton bet10Button;
	protected static JLabel displayBet;
	protected static JLabel displayBank;
	protected static JButton high;
	protected static JButton low;
	private static JOptionPane error;
 
	private static int bank = 100;
	private static int bet = 0;
 
	int[] nums ={2,3,4,};
 
	public Player(){
 
		bet5Button = new JButton("Bet 5");
		bet10Button = new JButton("Bet 10");
		displayBet = new JLabel("Bet: " + bet);
		displayBank = new JLabel("Bank: " + bank);
		high = new JButton("Hi");
		low = new JButton("Lo");
 
		add(bet5Button);
		add(bet10Button);
		add(displayBet);
		add(displayBank);
		add(high);
		add(low);
 
	}
 
	// This will check what button has been pressed and remove/update money and bets
	public void removeAmount(JButton button){
 
		if(button == bet5Button){
		    bank = bank - 5;
			bet = bet + 5;
		}else if(button == bet10Button){
			bank = bank - 10;
			bet = bet + 10;
		}
		checker(); // Checks if the bet is allowed etc and will display errors etc
		displayBet.setText("Bank: " + bank);
		displayBank.setText("Bet: " + bet); // This shall update the label
 
	}
 
	public void checker(){
		if(bank <=0 && bet == 0){ // Test this
			JOptionPane.showMessageDialog(error, "Game over");
		}else if(bank < bet && bank <= 0){
			JOptionPane.showMessageDialog(error, "Not enough money!");
 
		}
	}
}

import java.util.ArrayList;
import java.util.Random;
 
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
 
 
public class Generate extends JPanel{
 
	private static JLabel generatedNumber;
	private static Random rand;
 
	// Array will store all the random numbers, will allow the program to check
	protected static ArrayList<Integer> generatedArray = new ArrayList<Integer>();
	private int generatedConvert;
 
	public Generate(){
		// Generates random number, may change this at a later date.
		rand = new Random();
		generatedConvert = rand.nextInt(11);
 
		generatedNumber = new JLabel("Number " + generatedConvert);
		add(generatedNumber);
	}
 
	// Will generate the numbers for the game and store them in the array
	public void randNumber(){
		generatedConvert = rand.nextInt(11);
		generatedArray.add(generatedConvert);
		generatedNumber.setText("Number " + generatedConvert);
	}
	// Not yet complete
	public void numberChecker(JButton button){
		int get1 = generatedArray.get(generatedArray.size()-1); // Need to fix this!!!!
		int get2 = generatedArray.get(generatedArray.size()-2);
 
		if(button == Player.high){
			if(get1 > get2){
				System.out.println("Testing");
			}
		}
	}
}

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
 
 
public class GameListener implements ActionListener {
 
	private Player player;
	private Generate generate;
 
 
	// Constructor takes the instances
	public GameListener(Player player, Generate generate){
		this.player = player;
		this.generate = generate;
 
		// Adding the listeners to get input and adjust game
		Player.high.addActionListener(this);
		Player.low.addActionListener(this);
		Player.bet5Button.addActionListener(this);
		Player.bet10Button.addActionListener(this);
 
	}
 
	@Override // Performs all the actions with the GUI
	public void actionPerformed(ActionEvent e) {
 
		if(e.getSource() == Player.bet5Button){
			player.removeAmount(Player.bet5Button);
		}else if(e.getSource() == Player.bet10Button){
			player.removeAmount(Player.bet10Button);
		}
 
		if(e.getSource() == Player.high){
			generate.randNumber();
			generate.numberChecker(Player.high);
		}
	}
 
}

Thanks for letting me know I feel pretty confident in the theory side of java and what most stuff does, I just worry that I don't present the code in the correct way.