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我的 Swing java 中有 2 个 JTextField 和 2 个 JPasswordField 组件，其框架如下所示： 单击 ShowAllDetails 按钮时，所有输入的详细信息都显示在 JtextArea 中，如下所示：

在此处输入图像描述

下面是相同的代码：

package popUpTest;

import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JLabel;
import java.awt.Font;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.JTextArea;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class PopUpTest
    {

        private JFrame frame;
        private JPasswordField passSourcePassword;
        private JTextField txtSourceUserName;
        private JTextField txtTargetUserName;
        private JPasswordField passTargetPassword;

        /**
         * Launch the application.
         */
        public static void main(String[] args)
            {
                EventQueue.invokeLater(new Runnable()
                    {
                        public void run()
                            {
                                try
                                    {
                                        PopUpTest window = new PopUpTest();
                                        window.frame.setVisible(true);
                                    } catch (Exception e)
                                    {
                                        e.printStackTrace();
                                    }
                            }
                    });
            }

        /**
         * Create the application.
         */
        public PopUpTest()
            {
                initialize();
            }

        /**
         * Initialize the contents of the frame.
         */
        private void initialize()
            {
                frame = new JFrame();
                frame.setBounds(100, 100, 444, 403);
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.getContentPane().setLayout(null);

                JLabel lblSourceUserName = new JLabel("SourceUserName:");
                lblSourceUserName.setFont(new Font("Tahoma", Font.BOLD, 16));
                lblSourceUserName.setBounds(15, 62, 170, 20);
                frame.getContentPane().add(lblSourceUserName);

                passSourcePassword = new JPasswordField();
                passSourcePassword.setBounds(15, 153, 147, 26);
                frame.getContentPane().add(passSourcePassword);

                JLabel lblSourcePassword = new JLabel("SourcePassword:");
                lblSourcePassword.setFont(new Font("Tahoma", Font.BOLD, 16));
                lblSourcePassword.setBounds(15, 132, 147, 20);
                frame.getContentPane().add(lblSourcePassword);

                txtSourceUserName = new JTextField();
                txtSourceUserName.setBounds(16, 81, 146, 26);
                frame.getContentPane().add(txtSourceUserName);
                txtSourceUserName.setColumns(10);

                JLabel lblTargetUserName = new JLabel("TargetUserName:");
                lblTargetUserName.setFont(new Font("Tahoma", Font.BOLD, 16));
                lblTargetUserName.setBounds(240, 62, 170, 20);
                frame.getContentPane().add(lblTargetUserName);

                txtTargetUserName = new JTextField();
                txtTargetUserName.setColumns(10);
                txtTargetUserName.setBounds(241, 81, 146, 26);
                frame.getContentPane().add(txtTargetUserName);

                JLabel lblTargetPassword = new JLabel("TargetPassword:");
                lblTargetPassword.setFont(new Font("Tahoma", Font.BOLD, 16));
                lblTargetPassword.setBounds(240, 132, 147, 20);
                frame.getContentPane().add(lblTargetPassword);

                passTargetPassword = new JPasswordField();
                passTargetPassword.setBounds(240, 153, 147, 26);
                frame.getContentPane().add(passTargetPassword);

                JLabel lblEnterBelowDetails = new JLabel("Enter Below Details:");
                lblEnterBelowDetails.setFont(new Font("Tahoma", Font.BOLD, 16));
                lblEnterBelowDetails.setBounds(15, 26, 187, 20);
                frame.getContentPane().add(lblEnterBelowDetails);

                JTextArea textArea = new JTextArea();
                textArea.setBounds(15, 252, 365, 85);
                frame.getContentPane().add(textArea);

                JButton btnShowAllDetails = new JButton("Show All Details:");
                btnShowAllDetails.setBounds(15, 207, 226, 29);
                frame.getContentPane().add(btnShowAllDetails);

                btnShowAllDetails.addActionListener(new ActionListener()
                    {
                        public void actionPerformed(ActionEvent arg0)
                            {
                                textArea.append(txtSourceUserName.getText() + "\n");
                                textArea.append(passSourcePassword.getText() + "\n");
                                textArea.append(txtTargetUserName.getText() + "\n");
                                textArea.append(passTargetPassword.getText() + "\n");
                            }

                    });

            }
    }

现在，我不想在加载主框架时显示这 4 个组件，而是想在单击按钮时在弹出窗口中显示这 4 个组件，如下所示：

同样在单击“显示所有详细信息”按钮时应该像以前一样工作。（即它应该使用在弹出窗口中输入的值填充 JtextArea）

在此处输入图像描述

我怎样才能做到这一点？

我也浏览了其他博客，但没有发现在弹出窗口中显示如此多个 JPasswordField/JTextField。任何指导将不胜感激。

4

1 回答 1

2

只需在按钮侦听器中添加新组件（JTextFields 和 JPasswordFields），然后在框架上调用 repaint() 和 revalidate()。

这是一个没有适当布局的解决方案：

编辑：

package popUpTest;

import java.awt.EventQueue;

import javax.swing.*;
import java.awt.Font;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class PopUpTest
{

private JFrame frame;
private JPasswordField passSourcePassword;
private JTextField txtSourceUserName;
private JTextField txtTargetUserName;
private JPasswordField passTargetPassword;
private JTextArea textArea;

/**
 * Launch the application.
 */
public static void main(String[] args)
{
    EventQueue.invokeLater(new Runnable()
    {
        public void run()
        {
            try
            {
                PopUpTest window = new PopUpTest();
                window.frame.setVisible(true);
            } catch (Exception e)
            {
                e.printStackTrace();
            }
        }
    });
}

/**
 * Create the application.
 */
public PopUpTest()
{
    initialize();
}

/**
 * Initialize the contents of the frame.
 */
private void initialize()
{
    frame = new JFrame();
    frame.setBounds(100, 100, 444, 403);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.getContentPane().setLayout(null);

    JButton popUpButton = new JButton("Click to Show Pop Up To Enter Detail");
    popUpButton.setBounds(15, 100, 365, 85);
    popUpButton.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            new MyDialog();
        }
    });
    frame.getContentPane().add(popUpButton);

    textArea = new JTextArea();
    textArea.setBounds(15, 252, 365, 85);
    frame.getContentPane().add(textArea);

    JButton btnShowAllDetails = new JButton("Show All Details:");
    btnShowAllDetails.setBounds(15, 207, 226, 29);
    frame.getContentPane().add(btnShowAllDetails);


    btnShowAllDetails.addActionListener(new ActionListener()
    {
        public void actionPerformed(ActionEvent arg0)
        {
            textArea.append(txtSourceUserName.getText() + "\n");
            textArea.append(passSourcePassword.getText() + "\n");
            textArea.append(txtTargetUserName.getText() + "\n");
            textArea.append(passTargetPassword.getText() + "\n");
        }

    });

}

public JTextArea getTextArea() {
    return textArea;
}



private class MyDialog extends JDialog {
    private final JPasswordField passSourcePassword;
    private final JTextField txtSourceUserName;
    private final JTextField txtTargetUserName;
    private final JPasswordField passTargetPassword;

    public MyDialog() {
        setSize(600, 500);
        setLayout(null);

        JLabel lblEnterBelowDetails = new JLabel("Enter Below Details:");
        lblEnterBelowDetails.setFont(new Font("Tahoma", Font.BOLD, 16));
        lblEnterBelowDetails.setBounds(15, 26, 187, 20);
        add(lblEnterBelowDetails);

        JLabel lblSourceUserName = new JLabel("SourceUserName:");
        lblSourceUserName.setFont(new Font("Tahoma", Font.BOLD, 16));
        lblSourceUserName.setBounds(15, 62, 170, 20);
        add(lblSourceUserName);

        passSourcePassword = new JPasswordField();
        passSourcePassword.setBounds(15, 153, 147, 26);
        add(passSourcePassword);

        JLabel lblSourcePassword = new JLabel("SourcePassword:");
        lblSourcePassword.setFont(new Font("Tahoma", Font.BOLD, 16));
        lblSourcePassword.setBounds(15, 132, 147, 20);
        add(lblSourcePassword);

        txtSourceUserName = new JTextField();
        txtSourceUserName.setBounds(16, 81, 146, 26);
        add(txtSourceUserName);
        txtSourceUserName.setColumns(10);

        JLabel lblTargetUserName = new JLabel("TargetUserName:");
        lblTargetUserName.setFont(new Font("Tahoma", Font.BOLD, 16));
        lblTargetUserName.setBounds(240, 62, 170, 20);
        add(lblTargetUserName);

        txtTargetUserName = new JTextField();
        txtTargetUserName.setColumns(10);
        txtTargetUserName.setBounds(241, 81, 146, 26);
        add(txtTargetUserName);

        JLabel lblTargetPassword = new JLabel("TargetPassword:");
        lblTargetPassword.setFont(new Font("Tahoma", Font.BOLD, 16));
        lblTargetPassword.setBounds(240, 132, 147, 20);
        add(lblTargetPassword);

        passTargetPassword = new JPasswordField();
        passTargetPassword.setBounds(240, 153, 147, 26);
        add(passTargetPassword);

        JButton publishButton = new JButton("Publish");
        publishButton.setBounds(100, 200, 146, 26);
        add(publishButton);

        publishButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                textArea.append(txtSourceUserName.getText() + "\n");
                textArea.append(passSourcePassword.getText() + "\n");
                textArea.append(txtTargetUserName.getText() + "\n");
                textArea.append(passTargetPassword.getText() + "\n");
                dispose();
            }
        });


        setVisible(true);

    }
}
}

顺便说一句：尝试尽快阅读有关布局管理器的信息，因为绝对坐标令人头疼；-)

于 2018-09-24T09:26:15.340 回答