我现在正在上一门java的课，我决定尝试制作自己的程序。我遇到了一个问题，使一个简单的闲置点击游戏，我不完全确定我做错了什么。我一直试图在运行程序时打开一个菜单，但是由于某些原因，我添加到jframe的组件没有出现。
我尝试过重新组织我的代码，也尝试过一些解决方案，但是所有的问题都是通过 setVisible(true); 在将所有组件添加到一个框架之后，我已经完成了。
这是我的密码：

import java.awt.*;
import java.awt.event.*;

public class Main extends JFrame implements ActionListener{
    int counter = 10000;
    int autoClickerCost = 100;
    int autoClickerDelay = 1000;
    int autoClickerCount = 0;
    boolean hasAutoClicker;
    JLabel counterField, autoClickerSplash, invText, autoClickerCountTxt;
    JButton countUp, autoClickerUpgrade;
    JPanel clickerPanel, upgrades, shop, inv, mainPanel;
    SpringLayout overallLayout, upgradesLayout, clickerPanelLayout, shopLayout, invLayout, mainPanelLayout;
    Timer autoClickerTimer;

    public Main() {
        super("Idle clicker");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        Container pane = getContentPane();
        overallLayout = new SpringLayout();
        pane.setLayout(overallLayout);

        inv = new JPanel();
        invLayout = new SpringLayout();
        inv.setLayout(invLayout);

        mainPanel = new JPanel();
        mainPanelLayout = new SpringLayout();
        mainPanel.setLayout(mainPanelLayout);

        clickerPanel = new JPanel();
        clickerPanelLayout = new SpringLayout();
        clickerPanel.setLayout(clickerPanelLayout);

        upgrades = new JPanel();
        upgradesLayout = new SpringLayout();
        upgrades.setLayout(upgradesLayout);

        invText = new JLabel("Inventory:");
        invText.setFont(invText.getFont().deriveFont(24.0f));

        counterField = new JLabel("Current Clicks: " + counter);
        counterField.setFont(counterField.getFont().deriveFont(24.0f));

        autoClickerCountTxt = new JLabel("Autoclickers: " + autoClickerCount);
        autoClickerCountTxt.setFont(autoClickerCountTxt.getFont().deriveFont(12.0f));

        countUp = new JButton("Click Me");
        countUp.setFont(countUp.getFont().deriveFont (12.0f));
        countUp.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                counter++;
                counterField.setText("Current Clicks: " + counter);
                if(counter > 50 && hasAutoClicker == false) {
                    upgrades.add(autoClickerUpgrade);
                    upgradesLayout.putConstraint(SpringLayout.NORTH, autoClickerUpgrade, 5, SpringLayout.NORTH, upgrades);
                    upgradesLayout.putConstraint(SpringLayout.WEST, autoClickerUpgrade, 5, SpringLayout.WEST, upgrades);
                }
                if(hasAutoClicker == true) {

                }
            }

        });
        autoClickerUpgrade = new JButton("Autoclicker: " + autoClickerCost + " clicks");
        autoClickerUpgrade.setFont (countUp.getFont ().deriveFont (12.0f));
        autoClickerUpgrade.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                if(counter >= autoClickerCost && hasAutoClicker == false) {
                    autoClickerDelay = 1000;
                    ActionListener taskPerformer = new ActionListener() {
                        public void actionPerformed(ActionEvent evt) {
                            counter = counter + 1;
                            counterField.setText("Current Clicks: " + counter);
                        }
                    };
                    autoClickerTimer = new Timer(autoClickerDelay, taskPerformer);
                    autoClickerTimer.start();
                    hasAutoClicker = true;
                    autoClickerCount = autoClickerCount + 1;
                    autoClickerCountTxt.setText("Autoclickers: " + autoClickerCount);
                    counter = counter - autoClickerCost;
                    counterField.setText("Current Clicks: " + counter);
                    autoClickerCost = (int) Math.round(autoClickerCost * 1.25);
                    autoClickerUpgrade.setText("Autoclicker: " + autoClickerCost + " clicks");
                }
                else if(counter >= autoClickerCost && hasAutoClicker == true) {
                    if(autoClickerDelay > 1) {
                        autoClickerCount = autoClickerCount + 1;
                        autoClickerCountTxt.setText("Autoclickers: " + autoClickerCount);
                        autoClickerDelay = (int) Math.ceil(1000 / autoClickerCount);
                        autoClickerTimer.setDelay(autoClickerDelay);
                        hasAutoClicker = true;
                        counter = counter - autoClickerCost;
                        counterField.setText("Current Clicks: " + counter);
                        autoClickerCost = (int) Math.round(autoClickerCost * 1.5);
                        autoClickerUpgrade.setText("Autoclicker: " + autoClickerCost + " clicks");
                    }
                }
            }
        });

        inv.add(invText);
        invLayout.putConstraint(SpringLayout.WEST, invText, 5, SpringLayout.WEST, inv);
        invLayout.putConstraint(SpringLayout.NORTH, invText, 5, SpringLayout.NORTH, inv);

        inv.add(autoClickerCountTxt);
        invLayout.putConstraint(SpringLayout.WEST, autoClickerCountTxt, 5, SpringLayout.WEST, inv);
        invLayout.putConstraint(SpringLayout.NORTH, autoClickerCountTxt, 10, SpringLayout.SOUTH, invText);

        clickerPanel.add(counterField);
        clickerPanelLayout.putConstraint(SpringLayout.WEST, counterField, 5, SpringLayout.WEST, clickerPanel);
        clickerPanelLayout.putConstraint(SpringLayout.NORTH, counterField, 5, SpringLayout.NORTH, clickerPanel);

        clickerPanel.add(countUp);
        clickerPanelLayout.putConstraint(SpringLayout.NORTH, countUp, 5, SpringLayout.SOUTH, counterField);
        clickerPanelLayout.putConstraint(SpringLayout.WEST, countUp, 5, SpringLayout.WEST, clickerPanel);

        mainPanel.add(clickerPanel);
        mainPanelLayout.putConstraint(SpringLayout.NORTH, clickerPanel, 5, SpringLayout.NORTH, mainPanel);
        mainPanelLayout.putConstraint(SpringLayout.WEST, clickerPanel, 5, SpringLayout.WEST, mainPanel);

        mainPanel.add(upgrades);
        mainPanelLayout.putConstraint(SpringLayout.NORTH, upgrades, 5, SpringLayout.NORTH, mainPanel);
        mainPanelLayout.putConstraint(SpringLayout.WEST, upgrades, 5, SpringLayout.SOUTH, clickerPanel);

        pane.add(inv);
        overallLayout.putConstraint(SpringLayout.NORTH, inv, 5, SpringLayout.NORTH, pane);
        overallLayout.putConstraint(SpringLayout.WEST, inv, 5, SpringLayout.WEST, pane);

        pane.add(mainPanel);
        overallLayout.putConstraint(SpringLayout.NORTH, mainPanel, 5, SpringLayout.SOUTH, inv);
        overallLayout.putConstraint(SpringLayout.WEST, mainPanel, 5, SpringLayout.WEST, pane);

        setContentPane(pane);
        pack();
        setVisible(true);
    }

    public void actionPerformed(ActionEvent event) {

    }

    public static void main(String[] args) {
        Main example = new Main();
    }
}

我觉得我错过了一些非常明显的东西，或者可能有一个关键的概念我还不知道。太好了！