声明StudentJFrame框架类,系与专业成员变量改用组合框编辑，储存输入元素，学号按系与专业自动编号，按学号查找和排序

好的，基于你的要求，我可以提供以下声明StudentJFrame框架类的代码：

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

public class StudentJFrame extends JFrame {
    private JLabel idLabel, nameLabel, majorLabel;
    private JTextField nameField;
    private JComboBox<String> deptCombo, majorCombo;
    private JButton addButton, searchButton, sortButton;
    private JTextArea resultArea;
    private ArrayList<Student> studentList;

    public StudentJFrame() {
        // Set up the GUI components
        idLabel = new JLabel("学号：");
        nameLabel = new JLabel("姓名：");
        majorLabel = new JLabel("专业：");
        nameField = new JTextField(20);
        deptCombo = new JComboBox<>(new String[]{"计算机系", "电子系", "通信系"});
        majorCombo = new JComboBox<>();
        addButton = new JButton("添加");
        searchButton = new JButton("查找");
        sortButton = new JButton("排序");
        resultArea = new JTextArea(10, 30);

        // Add the components to the content pane
        Container contentPane = getContentPane();
        contentPane.setLayout(new FlowLayout());
        contentPane.add(idLabel);
        contentPane.add(new JLabel("自动生成"));
        contentPane.add(nameLabel);
        contentPane.add(nameField);
        contentPane.add(majorLabel);
        contentPane.add(deptCombo);
        contentPane.add(majorCombo);
        contentPane.add(addButton);
        contentPane.add(searchButton);
        contentPane.add(sortButton);
        contentPane.add(new JScrollPane(resultArea));

        // Set up the event handlers
        addButton.addActionListener(e -> addStudent());
        searchButton.addActionListener(e -> searchStudent());
        sortButton.addActionListener(e -> sortStudents());

        // Set up the frame
        setTitle("学生信息管理系统");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        pack();
        setVisible(true);

        // Initialize the student list
        studentList = new ArrayList<>();
    }

    private void addStudent() {
        String name = nameField.getText();
        String dept = (String) deptCombo.getSelectedItem();
        String major = (String) majorCombo.getSelectedItem();
        String id = generateId(dept, major);
        Student student = new Student(id, name, dept, major);
        studentList.add(student);
        resultArea.append("添加成功：" + student + "\n");
    }

    private void searchStudent() {
        String id = JOptionPane.showInputDialog("请输入要查找的学号：");
        for (Student student : studentList) {
            if (student.getId().equals(id)) {
                resultArea.setText(student.toString());
                return;
            }
        }
        resultArea.setText("找不到该学生！");
    }

    private void sortStudents() {
        Collections.sort(studentList);
        resultArea.setText("排序成功！\n");
        for (Student student : studentList) {
            resultArea.append(student + "\n");
        }
    }

    private String generateId(String dept, String major) {
        int count = 0;
        for (Student student : studentList) {
            if (student.getDept().equals(dept) && student.getMajor().equals(major)) {
                count++;
            }
        }
        return String.format("%s%02d%02d", dept.substring(0, 2), major.hashCode() % 100, count + 1);
    }

    private void updateMajorList() {
        String dept = (String) deptCombo.getSelectedItem();
        switch (dept) {
            case "计算机系":
                majorCombo.setModel(new DefaultComboBoxModel<>(new String[]{"软件工程", "网络工程", "信息安全"}));
                break;
            case "电子系":
                majorCombo.setModel(new DefaultComboBoxModel<>(new String[]{"电子信息科学与技术", "光电信息科学与工程", "电子商务"}));
                break;
            case "通信系":
                majorCombo.setModel(new DefaultComboBoxModel<>(new String[]{"通信工程", "信息工程", "电信管理"}));
                break;
        }
    }

    private class Student implements Comparable<Student> {
        private String id;
        private String name;
        private String dept;
        private String major;

        public Student(String id, String name, String dept, String major) {
            this.id = id;
            this.name = name;
            this.dept = dept;
            this.major = major;
        }

        public String getId() {
            return id;
        }

        public String getName() {
            return name;
        }

        public String getDept() {
            return dept;
        }

        public String getMajor() {
            return major;
        }

        public String toString() {
            return String.format("%s\t%s\t%s\t%s", id, name, dept, major);
        }

        public int compareTo(Student other) {
            return id.compareTo(other.id);
        }
    }
}

这个声明包含了一个名为StudentJFrame的公共类，它扩展了JFrame类。该类包含了一些GUI组件，包括标签、文本框、组合框、按钮和文本区域。它还包含了一个ArrayList<Student>类型的成员变量studentList，用于存储所有添加的学生信息。在构造函数中，我们初始化了GUI组件、设置了事件处理程序，并初始化了studentList。在addStudent()方法中，我们使用输入的信息创建一个新的Student对象，并将其添加到studentList中。在searchStudent()方法中，我们使用JOptionPane.showInputDialog()方法获取用户输入的学号，并在studentList中查找该学生。在sortStudents()方法中，我们使用Collections.sort()方法对studentList进行排序，并在文本区域中显示所有学生的信息。在generateId()方法中，我们使用dept和major参数生成一个新的学号。在updateMajorList()方法中，我们根据deptCombo的选择更新majorCombo的选项。最后，我们定义了一个嵌套类Student，它实现了Comparable<Student>接口，并包含了一个compareTo()方法，用于比较两个学生的学号。