用java软件功能要求： 1. 要求在文本框中输入有关信息，单击“添加”按钮，在下面的多行文本域中显示输入的的信 息（如姓名文本框、性别用单选按钮、年龄组合框、爱好复选框）； 2. 单击“读取”按钮将文本文件中的信息显示到多行文本域中。 3. 单击“保存”按钮将把多行文本域中的内容保存到文本文件中，并退出窗口。

好的，根据您的要求，我可以为您提供以下Java代码示例，实现您的功能要求：

import java.awt.EventQueue;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class UserInfoGUI {

    private JFrame frame;
    private JTextField nameField;
    private JRadioButton maleRadioButton;
    private JRadioButton femaleRadioButton;
    private JComboBox<Integer> ageComboBox;
    private JCheckBox sportCheckBox;
    private JCheckBox musicCheckBox;
    private JCheckBox travelCheckBox;
    private JTextArea infoArea;

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

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

    /**
     * Initialize the contents of the frame.
     */
    private void initialize() {
        frame = new JFrame();
        frame.setBounds(100, 100, 450, 300);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().setLayout(null);

        JLabel nameLabel = new JLabel("姓名：");
        nameLabel.setBounds(10, 10, 54, 15);
        frame.getContentPane().add(nameLabel);

        nameField = new JTextField();
        nameField.setBounds(74, 7, 150, 21);
        frame.getContentPane().add(nameField);
        nameField.setColumns(10);

        JLabel genderLabel = new JLabel("性别：");
        genderLabel.setBounds(10, 40, 54, 15);
        frame.getContentPane().add(genderLabel);

        maleRadioButton = new JRadioButton("男");
        maleRadioButton.setSelected(true);
        maleRadioButton.setBounds(74, 36, 50, 23);
        frame.getContentPane().add(maleRadioButton);

        femaleRadioButton = new JRadioButton("女");
        femaleRadioButton.setBounds(126, 36, 50, 23);
        frame.getContentPane().add(femaleRadioButton);

        ageComboBox = new JComboBox<Integer>(new Integer[] { 18, 19, 20, 21, 22, 23, 24, 25, 26, 27 });
        ageComboBox.setBounds(74, 68, 80, 21);
        frame.getContentPane().add(ageComboBox);

        JLabel ageLabel = new JLabel("年龄：");
        ageLabel.setBounds(10, 71, 54, 15);
        frame.getContentPane().add(ageLabel);

        sportCheckBox = new JCheckBox("运动");
        sportCheckBox.setBounds(10, 105, 60, 23);
        frame.getContentPane().add(sportCheckBox);

        musicCheckBox = new JCheckBox("音乐");
        musicCheckBox.setBounds(74, 105, 60, 23);
        frame.getContentPane().add(musicCheckBox);

        travelCheckBox = new JCheckBox("旅行");
        travelCheckBox.setBounds(138, 105, 60, 23);
        frame.getContentPane().add(travelCheckBox);

        JButton addButton = new JButton("添加");
        addButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                String name = nameField.getText();
                String gender = maleRadioButton.isSelected() ? "男" : "女";
                int age = (int) ageComboBox.getSelectedItem();
                String hobby = "";
                if (sportCheckBox.isSelected()) {
                    hobby += "运动 ";
                }
                if (musicCheckBox.isSelected()) {
                    hobby += "音乐 ";
                }
                if (travelCheckBox.isSelected()) {
                    hobby += "旅行";
                }
                String info = name + "，" + gender + "，" + age + "岁，爱好：" + hobby;
                infoArea.append(info + "\n");
            }
        });
        addButton.setBounds(10, 141, 93, 23);
        frame.getContentPane().add(addButton);

        JButton readButton = new JButton("读取");
        readButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                try {
                    BufferedReader reader = new BufferedReader(new FileReader("userinfo.txt"));
                    String line;
                    while ((line = reader.readLine()) != null) {
                        infoArea.append(line + "\n");
                    }
                    reader.close();
                } catch (IOException ex) {
                    ex.printStackTrace();
                }
            }
        });
        readButton.setBounds(113, 141, 93, 23);
        frame.getContentPane().add(readButton);

        JButton saveButton = new JButton("保存");
        saveButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                try {
                    BufferedWriter writer = new BufferedWriter(new FileWriter("userinfo.txt"));
                    writer.write(infoArea.getText());
                    writer.close();
                    frame.dispose();
                } catch (IOException ex) {
                    ex.printStackTrace();
                }
            }
        });
        saveButton.setBounds(216, 141, 93, 23);
        frame.getContentPane().add(saveButton);

        JScrollPane scrollPane = new JScrollPane();
        scrollPane.setBounds(10, 174, 414, 77);
        frame.getContentPane().add(scrollPane);

        infoArea = new JTextArea();
        scrollPane.setViewportView(infoArea);
    }
}

这段代码使用了Java Swing库来创建一个图形用户界面，包含了您要求的文本框、单选按钮、组合框、复选框和多行文本域。在代码中，单击“添加”按钮将会把输入的信息格式化后追加到多行文本域中；单击“读取”按钮将会从文本文件中读取内容并显示到多行文本域中；单击“保存”按钮将会把多行文本域中的内容保存到文本文件中，并关闭窗口。