java - jFormDesigner 设计后无法显示？

Question

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

/**
 * @author Ene Ion
 */
public class launcher extends JFrame {

        public launcher() {
        initComponents();
    }

    private void initComponents() {
        // JFormDesigner - Component initialization - DO NOT MODIFY  //GEN-BEGIN:initComponents
        // Generated using JFormDesigner Evaluation license - Ene Ion
        mbmlauncherfata = new JFrame();
        textField1 = new JTextField();
        checkBox1 = new JCheckBox();
        label1 = new JLabel();
        comboBox1 = new JComboBox();
        label2 = new JLabel();
        comboBox2 = new JComboBox();
        button1 = new JButton();
        button2 = new JButton();
        button3 = new JButton();
        progressBar1 = new JProgressBar();
        label3 = new JLabel();
        label4 = new JLabel();
        button4 = new JButton();
        button5 = new JButton();
        label5 = new JLabel();
        button6 = new JButton();

        //======== mbmlauncherfata ========
        {
            mbmlauncherfata.setTitle("MBMLauncher");
            mbmlauncherfata.setIconImage(new ImageIcon("E:\\Chituri\\MBMLauncherJava\\src\\resursele\\icon_4_64x64x32.png").getImage());
            mbmlauncherfata.setResizable(false);
            Container mbmlauncherfataContentPane = mbmlauncherfata.getContentPane();

            //---- textField1 ----
            textField1.setText("Username");
            textField1.setForeground(new Color(153, 0, 0));

            //---- checkBox1 ----
            checkBox1.setText("Remember Me");

            //---- label1 ----
            label1.setText("RAM Allocated");

            //---- comboBox1 ----
            comboBox1.setModel(new DefaultComboBoxModel(new String[] {
                "256M",
                "512M",
                "1024M",
                "2G",
                "3G",
                "4G"
            }));

            //---- label2 ----
            label2.setText("to");

            //---- comboBox2 ----
            comboBox2.setModel(new DefaultComboBoxModel(new String[] {
                "512M",
                "1024M",
                "2G",
                "3G",
                "4G",
                "5G",
                "6G"
            }));

            //---- button1 ----
            button1.setText("Play");
            button1.setFont(new Font("Snap ITC", Font.BOLD, 36));
            button1.setForeground(new Color(255, 102, 0));

            //---- button2 ----
            button2.setText("Update Game");

            //---- button3 ----
            button3.setText("Update Launcher");

            //---- label3 ----
            label3.setText("Download status:");

            //---- label4 ----
            label4.setText("Nothing in download");

            //---- button4 ----
            button4.setText("Texture Packs");

            //---- button5 ----
            button5.setText(".game");

            //---- label5 ----
            label5.setText("Drag and drop your texture\npack in the box *.zip files");
            label5.setIcon(new ImageIcon("E:\\Chituri\\MBMLauncherJava\\src\\resursele\\dasdasdasd.png"));

            //---- button6 ----
            button6.setText("Made By Malasuerte94");

            GroupLayout mbmlauncherfataContentPaneLayout = new GroupLayout(mbmlauncherfataContentPane);
            mbmlauncherfataContentPane.setLayout(mbmlauncherfataContentPaneLayout);
            mbmlauncherfataContentPaneLayout.setHorizontalGroup(
                mbmlauncherfataContentPaneLayout.createParallelGroup()
                    .addGroup(mbmlauncherfataContentPaneLayout.createSequentialGroup()
                        .addContainerGap()
                        .addGroup(mbmlauncherfataContentPaneLayout.createParallelGroup()
                            .addComponent(progressBar1, GroupLayout.Alignment.TRAILING, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                            .addComponent(button1, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                            .addGroup(mbmlauncherfataContentPaneLayout.createSequentialGroup()
                                .addComponent(button2, GroupLayout.PREFERRED_SIZE, 131, GroupLayout.PREFERRED_SIZE)
                                .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(button3, GroupLayout.DEFAULT_SIZE, 140, Short.MAX_VALUE))
                            .addGroup(mbmlauncherfataContentPaneLayout.createSequentialGroup()
                                .addComponent(button4, GroupLayout.PREFERRED_SIZE, 130, GroupLayout.PREFERRED_SIZE)
                                .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(button5, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                            .addGroup(mbmlauncherfataContentPaneLayout.createSequentialGroup()
                                .addComponent(textField1, GroupLayout.PREFERRED_SIZE, 136, GroupLayout.PREFERRED_SIZE)
                                .addGap(18, 18, 18)
                                .addComponent(checkBox1))
                            .addGroup(mbmlauncherfataContentPaneLayout.createSequentialGroup()
                                .addComponent(label1)
                                .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED)
                                .addComponent(comboBox1, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
                                .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(label2)
                                .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(comboBox2, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
                            .addGroup(mbmlauncherfataContentPaneLayout.createSequentialGroup()
                                .addComponent(label3, GroupLayout.PREFERRED_SIZE, 96, GroupLayout.PREFERRED_SIZE)
                                .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(label4))
                            .addComponent(label5, GroupLayout.PREFERRED_SIZE, 270, GroupLayout.PREFERRED_SIZE)
                            .addComponent(button6, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                        .addContainerGap())
            );
            mbmlauncherfataContentPaneLayout.setVerticalGroup(
                mbmlauncherfataContentPaneLayout.createParallelGroup()
                    .addGroup(mbmlauncherfataContentPaneLayout.createSequentialGroup()
                        .addContainerGap()
                        .addGroup(mbmlauncherfataContentPaneLayout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                            .addComponent(checkBox1)
                            .addComponent(textField1, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
                        .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(mbmlauncherfataContentPaneLayout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                            .addComponent(label2)
                            .addComponent(comboBox2, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
                            .addComponent(label1)
                            .addComponent(comboBox1, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
                        .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(button1)
                        .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(mbmlauncherfataContentPaneLayout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                            .addComponent(button2)
                            .addComponent(button3))
                        .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(progressBar1, GroupLayout.PREFERRED_SIZE, 18, GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(mbmlauncherfataContentPaneLayout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                            .addComponent(label4)
                            .addComponent(label3))
                        .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                        .addGroup(mbmlauncherfataContentPaneLayout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                            .addComponent(button4)
                            .addComponent(button5))
                        .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(label5)
                        .addPreferredGap(LayoutStyle.ComponentPlacement.UNRELATED)
                        .addComponent(button6, GroupLayout.PREFERRED_SIZE, 22, GroupLayout.PREFERRED_SIZE)
                        .addContainerGap(10, Short.MAX_VALUE))
            );
            mbmlauncherfata.setSize(305, 395);
            mbmlauncherfata.setLocationRelativeTo(null);
        }
        // JFormDesigner - End of component initialization  //GEN-END:initComponents
    }

    // JFormDesigner - Variables declaration - DO NOT MODIFY  //GEN-BEGIN:variables
    // Generated using JFormDesigner Evaluation license - Ene Ion
    private JFrame mbmlauncherfata;
    private JTextField textField1;
    private JCheckBox checkBox1;
    private JLabel label1;
    private JComboBox comboBox1;
    private JLabel label2;
    private JComboBox comboBox2;
    private JButton button1;
    private JButton button2;
    private JButton button3;
    private JProgressBar progressBar1;
    private JLabel label3;
    private JLabel label4;
    private JButton button4;
    private JButton button5;
    private JLabel label5;
    private JButton button6;
    // JFormDesigner - End of variables declaration  //GEN-END:variables

    public static void main(String[] args) {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                launcher GUI = new launcher();
                GUI.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                GUI.setVisible(true);
            }
        });
    }



}

结果是一个空的 java 框.. picture我尝试解决这个问题，但我是 java 脚本编写的初学者，问题出在哪里以及如何解决它？感谢您的帮助，请向我推荐一些好的 Eclipse 插件。

Answer 1

这通常发生在框架未打包时。

试试这个:

launcher GUI = new launcher();
GUI.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
GUI.pack(); // <=========== PACK 
GUI.setVisible(true);

Here是一个很好的教程，它将帮助您开始使用 Java 框架。