JText区域在JDialog中是不可见的，我添加了setVisible函数，但它仍然不起作用

Question

我希望在单击按钮时显示我的JDialog，但是当我单击它时，对话框确实显示，但是由于我已经在对话框中添加了四个textfied并添加了setVisible函数，因此我在对话框中看不到任何其他组件

class Class2_3 {
public static void main(String[]args){
    MyFrame myFrame=new MyFrame();
    myFrame.setVisible(true);
}
}
class MyDialog extends JDialog{
Container container =this.getContentPane();
JPanel jPanel=new JPanel();
public MyDialog(Component relativeTo)
{
    super();
    this.IniDialog();
    this.setLocationRelativeTo(relativeTo);
    this.setSize(300,300);
    //this.setDefaultCloseOperation(EXIT_ON_CLOSE);
    setModal(true);
    //this.setVisible(true);
}

public void  IniDialog()
{
    JTextField textField1=new JTextField(10);
    textField1.setMaximumSize(textField1.getPreferredSize());
    Box hBox1=Box.createHorizontalBox();
    JTextField textField2=new JTextField(10);
    textField2.setMaximumSize(textField2.getPreferredSize());
    Box hBox2=Box.createHorizontalBox();
    JTextField textField3=new JTextField(10);
    textField3.setMaximumSize(textField3.getPreferredSize());
    Box hBox3=Box.createHorizontalBox();
    JTextField textField4=new JTextField(10);
    textField4.setMaximumSize(textField4.getPreferredSize());
    Box hBox4=Box.createHorizontalBox();
    Box vBox=Box.createVerticalBox();
    vBox.add(Box.createVerticalStrut(10));
    vBox.add(hBox1);
    vBox.add(Box.createVerticalStrut(10));
    vBox.add(hBox2);
    vBox.add(Box.createVerticalStrut(10));
    vBox.add(hBox3);
    vBox.add(Box.createVerticalStrut(10));
    vBox.add(hBox4);
    vBox.add(Box.createVerticalStrut(10));
    jPanel.add(vBox);
    container.add(jPanel);
}
}
class MyFrame extends JFrame implements ActionListener{
MyDialog dialog;
//Container contentPane=this.getContentPane();
public MyFrame()
{
    //initialization
    this.setTitle("Spike");
    this.setSize(400, 300);
    this.setDefaultCloseOperation(EXIT_ON_CLOSE);
    //Component adding
    JButton openButton=new JButton("Open");
    //openButton.setSize(50, 50);
    openButton.addActionListener(this);
    //contentPane.add(openButton);
    JLabel label1=new JLabel("编号:");
    JTextField textField1=new JTextField(10);
    textField1.setMaximumSize(textField1.getPreferredSize());
    Box hBox1=Box.createHorizontalBox();
    hBox1.add(label1);
    hBox1.add(textField1);
    JLabel label2=new JLabel("名称:");
    JTextField textField2=new JTextField(10);
    textField2.setMaximumSize(textField2.getPreferredSize());
    Box hBox2=Box.createHorizontalBox();
    hBox2.add(label2);hBox2.add(textField2);
    JLabel label3=new JLabel("单价:");
    JTextField textField3=new JTextField(10);
    textField3.setMaximumSize(textField3.getPreferredSize());
    Box hBox3=Box.createHorizontalBox();
    hBox3.add(label3);hBox3.add(textField3);
    JLabel label4=new JLabel("数量:");
    JTextField textField4=new JTextField(10);
    textField4.setMaximumSize(textField4.getPreferredSize());
    Box hBox4=Box.createHorizontalBox();
    hBox4.add(label4);hBox4.add(textField4);
    Box vBox=Box.createVerticalBox();
    vBox.add(Box.createVerticalStrut(10));
    vBox.add(hBox1);
    vBox.add(Box.createVerticalStrut(10));
    vBox.add(hBox2);
    vBox.add(Box.createVerticalStrut(10));
    vBox.add(hBox3);
    vBox.add(Box.createVerticalStrut(10));
    vBox.add(hBox4);
    vBox.add(Box.createVerticalStrut(10));
    vBox.add(openButton);
    this.add(vBox,BorderLayout.CENTER);
}
@Override
public void actionPerformed(ActionEvent e) {
    if(dialog==null){
        //dialog=(MyDialog) new JDialog(this,true);
        dialog=new MyDialog(this);
        dialog.setVisible(true);
    }
}
}

Answer 1

您忘记将文本字段添加到IniDialog() :)框中

hBox1.add(textField1);
hBox2.add(textField2);
hBox3.add(textField3);
hBox4.add(textField4);