Java 通过JButton设置文本字段的可见性

所以我有一个很快的问题。当用户按下更新按钮时，如何设置文本字段的可见性？我基本上希望文本字段的可见性设置为false，当用户按下JButton时，它将可见性设置为true。在JButton上，我会使用动作事件还是更改的事件？我两种都试过了，但能见度似乎没有变化。下面是我的代码，任何输入都会有帮助。多谢各位

import java.awt.BorderLayout;
import java.awt.FlowLayout;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.border.BevelBorder;
import javax.swing.JLabel;
import javax.swing.ImageIcon;
import javax.swing.border.TitledBorder;
import javax.swing.JComponent;
import javax.swing.SwingConstants;
import javax.swing.JComboBox;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import java.awt.event.ItemListener;
import java.awt.event.ItemEvent;
import javax.swing.event.ChangeListener;
import javax.swing.event.ChangeEvent;
import javax.swing.plaf.PanelUI;

public class FirmLawyerProfile extends JDialog {

    private final JPanel contentPanel = new JPanel();
    private final PrimaryLogin primaryLogin = new PrimaryLogin();
    private JTextField jtfLawyerFirstName;
    private JTextField jtfLawyerLastName;
    private JTextField jtfLawyerHomeAddress;
    private JTextField jtfLawyerPrimaryPhone;
    private JTextField jtfLawyerMiddleName;
    private JTextField jtfLawyerEmail;
    private JTextField jtfLawyerCity;
    private JTextField jtfLawyerZipCode;

    /**
     * Launch the application.
     */
    public static void main(String[] args) {
        try {
            FirmLawyerProfile dialog = new FirmLawyerProfile();
            dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
            dialog.setVisible(true);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * Create the dialog.
     */
    public FirmLawyerProfile() {
        setTitle("Firm Attorney Record");
        setBounds(100, 100, 998, 679);
        getContentPane().setLayout(new BorderLayout());
        contentPanel.setBorder(new EmptyBorder(5, 5, 5, 5));
        getContentPane().add(contentPanel, BorderLayout.CENTER);
        contentPanel.setLayout(null);

        JPanel panel = new JPanel();
        panel.setBorder(new BevelBorder(BevelBorder.LOWERED, null, null, null, null));
        panel.setBounds(0, 13, 200, 556);
        contentPanel.add(panel);
        panel.setLayout(null);

        JLabel jlblFirmLawyerPicture = new JLabel("");
        jlblFirmLawyerPicture.setIcon(new ImageIcon("C:\\Users\\Justyn Bell\\Desktop\\abaApplicationImages\\blankProfile.jpg"));
        jlblFirmLawyerPicture.setBounds(41, 13, 115, 124);
        panel.add(jlblFirmLawyerPicture);

        JLabel jlblLawyerFirstName = new JLabel("[.getFirstName]");
        jlblLawyerFirstName.setBounds(12, 161, 95, 16);
        panel.add(jlblLawyerFirstName);

        JLabel jlblLawyerLastName = new JLabel("[.getLastName]");
        jlblLawyerLastName.setBounds(105, 161, 95, 16);
        panel.add(jlblLawyerLastName);

        JButton jbtnHome = new JButton("");
        jbtnHome.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                //this.FirmLawyerProfile.setVisible(false);
                FirmLawyerProfile.this.primaryLogin.setVisible(true);
            }
        });
        jbtnHome.setIcon(new ImageIcon("C:\\Users\\Justyn Bell\\Desktop\\abaApplicationImages\\homeButton.jpg"));
        jbtnHome.setBounds(255, 497, 77, 72);
        contentPanel.add(jbtnHome);

        JButton jtbnRemove = new JButton("");
        jtbnRemove.setIcon(new ImageIcon("C:\\Users\\Justyn Bell\\Desktop\\abaApplicationImages\\removeButton.png"));
        jtbnRemove.setBounds(415, 497, 77, 72);
        contentPanel.add(jtbnRemove);

        final JButton jbtnUpdate = new JButton("");
        jbtnUpdate.addChangeListener(new ChangeListener() {
            public void stateChanged(ChangeEvent arg0) {
                if(jbtnUpdate.isSelected()) {
                    jtfLawyerFirstName.setVisible(true);

                }
            }
        });


        jbtnUpdate.setIcon(new ImageIcon("C:\\Users\\\\Desktop\\abaApplicationImages\\UpdateInformation.png"));
        jbtnUpdate.setBounds(569, 497, 77, 72);
        contentPanel.add(jbtnUpdate);

        JButton jbtnSave = new JButton("");
        jbtnSave.setIcon(new ImageIcon("C:\\Users\\\\Desktop\\abaApplicationImages\\SaveButton.png"));
        jbtnSave.setBounds(743, 497, 77, 72);
        contentPanel.add(jbtnSave);

        JPanel panel_1 = new JPanel();
        panel_1.setLayout(null);
        panel_1.setBorder(new TitledBorder("Attorney Information"));
        panel_1.setBounds(212, 13, 734, 240);
        contentPanel.add(panel_1);

        JLabel jlblLawyerLegalSpeciality = new JLabel("Area of Legal Speciality");
        jlblLawyerLegalSpeciality.setHorizontalAlignment(SwingConstants.LEFT);
        jlblLawyerLegalSpeciality.setBounds(312, 23, 134, 23);
        panel_1.add(jlblLawyerLegalSpeciality);

        JLabel jlblLawyerMiddleName = new JLabel("Middle Name");
        jlblLawyerMiddleName.setHorizontalAlignment(SwingConstants.LEFT);
        jlblLawyerMiddleName.setBounds(342, 59, 80, 23);
        panel_1.add(jlblLawyerMiddleName);

        JLabel jlblEmail = new JLabel("Email");
        jlblEmail.setHorizontalAlignment(SwingConstants.LEFT);
        jlblEmail.setBounds(342, 95, 68, 23);
        panel_1.add(jlblEmail);

        JLabel jlblLawyerCity = new JLabel("City");
        jlblLawyerCity.setBounds(342, 133, 80, 16);
        panel_1.add(jlblLawyerCity);

        JLabel jlblLawyerZipCode = new JLabel("Zip Code");
        jlblLawyerZipCode.setHorizontalAlignment(SwingConstants.LEFT);
        jlblLawyerZipCode.setBounds(342, 162, 93, 23);
        panel_1.add(jlblLawyerZipCode);

        JLabel jlblLawyerDegreeInstitution = new JLabel("Degree Institution");
        jlblLawyerDegreeInstitution.setHorizontalAlignment(SwingConstants.LEFT);
        jlblLawyerDegreeInstitution.setBounds(342, 198, 107, 23);
        panel_1.add(jlblLawyerDegreeInstitution);

        JLabel jlblLawyerPrefix = new JLabel("Prefix");
        jlblLawyerPrefix.setHorizontalAlignment(SwingConstants.LEFT);
        jlblLawyerPrefix.setBounds(12, 23, 54, 23);
        panel_1.add(jlblLawyerPrefix);

        JLabel label_7 = new JLabel("First Name");
        label_7.setHorizontalAlignment(SwingConstants.LEFT);
        label_7.setBounds(12, 59, 68, 23);
        panel_1.add(label_7);

        JLabel label_8 = new JLabel("Last Name");
        label_8.setHorizontalAlignment(SwingConstants.LEFT);
        label_8.setBounds(12, 95, 68, 23);
        panel_1.add(label_8);

        JLabel label_9 = new JLabel("Home Address");
        label_9.setHorizontalAlignment(SwingConstants.LEFT);
        label_9.setBounds(12, 130, 93, 23);
        panel_1.add(label_9);

        JLabel jlblLawyerStateOfResidence = new JLabel("State of Residence");
        jlblLawyerStateOfResidence.setHorizontalAlignment(SwingConstants.LEFT);
        jlblLawyerStateOfResidence.setBounds(12, 162, 107, 23);
        panel_1.add(jlblLawyerStateOfResidence);

        JLabel jlblLawyerPrimaryPhone = new JLabel("Primary Phone");
        jlblLawyerPrimaryPhone.setHorizontalAlignment(SwingConstants.LEFT);
        jlblLawyerPrimaryPhone.setBounds(12, 198, 107, 23);
        panel_1.add(jlblLawyerPrimaryPhone);

        JComboBox jcbLawyerSpeciality = new JComboBox(new Object[]{});
        jcbLawyerSpeciality.setBounds(458, 24, 228, 22);
        panel_1.add(jcbLawyerSpeciality);

        JComboBox jcbLawyerDegreeInstitution = new JComboBox(new Object[]{});
        jcbLawyerDegreeInstitution.setBounds(458, 198, 228, 22);
        panel_1.add(jcbLawyerDegreeInstitution);

        JScrollPane scrollPane = new JScrollPane();
        scrollPane.setBounds(530, 198, 21, 22);
        panel_1.add(scrollPane);

        jtfLawyerFirstName = new JTextField();
        jtfLawyerFirstName.setColumns(10);
        jtfLawyerFirstName.setBounds(151, 59, 154, 22);
        panel_1.add(jtfLawyerFirstName);
        //jtfLawyerFirstName.setVisible(false); SHOULD I SET THIS SOMEHOW?

        jtfLawyerLastName = new JTextField();
        jtfLawyerLastName.setColumns(10);
        jtfLawyerLastName.setBounds(151, 95, 154, 22);
        panel_1.add(jtfLawyerLastName);

        jtfLawyerHomeAddress = new JTextField();
        jtfLawyerHomeAddress.setColumns(10);
        jtfLawyerHomeAddress.setBounds(151, 130, 154, 22);
        panel_1.add(jtfLawyerHomeAddress);

        JComboBox jcbLawyerStateOfResidence = new JComboBox(new Object[]{});
        jcbLawyerStateOfResidence.setBounds(151, 162, 80, 22);
        panel_1.add(jcbLawyerStateOfResidence);

        JComboBox jcbLawyerPrefix = new JComboBox(new Object[]{});
        jcbLawyerPrefix.setBounds(151, 23, 80, 22);
        panel_1.add(jcbLawyerPrefix);

        jtfLawyerPrimaryPhone = new JTextField();
        jtfLawyerPrimaryPhone.setColumns(10);
        jtfLawyerPrimaryPhone.setBounds(151, 198, 154, 22);
        panel_1.add(jtfLawyerPrimaryPhone);

        jtfLawyerMiddleName = new JTextField();
        jtfLawyerMiddleName.setColumns(10);
        jtfLawyerMiddleName.setBounds(458, 59, 154, 22);
        panel_1.add(jtfLawyerMiddleName);

        jtfLawyerEmail = new JTextField();
        jtfLawyerEmail.setColumns(10);
        jtfLawyerEmail.setBounds(458, 95, 154, 22);
        panel_1.add(jtfLawyerEmail);

        jtfLawyerCity = new JTextField();
        jtfLawyerCity.setColumns(10);
        jtfLawyerCity.setBounds(458, 130, 154, 22);
        panel_1.add(jtfLawyerCity);

        jtfLawyerZipCode = new JTextField();
        jtfLawyerZipCode.setColumns(10);
        jtfLawyerZipCode.setBounds(458, 162, 154, 22);
        panel_1.add(jtfLawyerZipCode);
        {
            JPanel buttonPane = new JPanel();
            buttonPane.setLayout(new FlowLayout(FlowLayout.RIGHT));
            getContentPane().add(buttonPane, BorderLayout.SOUTH);
        }
    }
}

---

您是否尝试过通过调用

validate（）

然后在

contentPanel

上调用

repaint（）

来更新面板？您需要JButtonal上的actionListener所以此部分

if（jbtnUpdate.isSelected（））{jtfirfyYerFirstName.setVisible（true）

仅适用于切换按钮学习使用LayoutManager。使用空布局并尝试在精确的像素位置设置组件边界将给您带来极大的痛苦，尤其是当您想添加其他内容、更改字体或尝试在其他位置运行程序时machine@bili，添加验证和重新绘制（）内容面板的方法（contentPanel.validate（）；）运行良好。我试图将其与vadiate（）一样放置；我发现它不工作。非常感谢。