编写javagui学生管理系统

下面是一个简单的Java GUI学生管理系统示例，可以添加、修改、删除和搜索学生信息。

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.ArrayList;

public class StudentManagementSystem extends JFrame implements ActionListener{

    private JLabel nameLabel, idLabel, ageLabel, genderLabel, departmentLabel, searchLabel;
    private JTextField nameTextField, idTextField, ageTextField, searchTextField;
    private JComboBox genderComboBox, departmentComboBox;
    private JButton addButton, updateButton, deleteButton, searchButton;
    private JTable table;
    private DefaultTableModel model;
    private JScrollPane scrollPane;
    private ArrayList<Student> studentList;

    public StudentManagementSystem(){
        setTitle("学生管理系统");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        nameLabel = new JLabel("姓名：");
        idLabel = new JLabel("学号：");
        ageLabel = new JLabel("年龄：");
        genderLabel = new JLabel("性别：");
        departmentLabel = new JLabel("院系：");
        searchLabel = new JLabel("搜索：");

        nameTextField = new JTextField();
        idTextField = new JTextField();
        ageTextField = new JTextField();
        searchTextField = new JTextField();

        genderComboBox = new JComboBox();
        genderComboBox.addItem("男");
        genderComboBox.addItem("女");

        departmentComboBox = new JComboBox();
        departmentComboBox.addItem("计算机科学与技术");
        departmentComboBox.addItem("软件工程");
        departmentComboBox.addItem("网络工程");

        addButton = new JButton("添加");
        updateButton = new JButton("修改");
        deleteButton = new JButton("删除");
        searchButton = new JButton("搜索");

        addButton.addActionListener(this);
        updateButton.addActionListener(this);
        deleteButton.addActionListener(this);
        searchButton.addActionListener(this);

        Object[] columns = {"姓名", "学号", "年龄", "性别", "院系"};
        model = new DefaultTableModel();
        model.setColumnIdentifiers(columns);
        table = new JTable(model);
        scrollPane = new JScrollPane(table);

        GroupLayout layout = new GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setAutoCreateGaps(true);
        layout.setAutoCreateContainerGaps(true);

        layout.setHorizontalGroup(
                layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
                                .addComponent(nameLabel)
                                .addComponent(idLabel)
                                .addComponent(ageLabel)
                                .addComponent(genderLabel)
                                .addComponent(departmentLabel))
                        .addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
                                .addComponent(nameTextField)
                                .addComponent(idTextField)
                                .addComponent(ageTextField)
                                .addComponent(genderComboBox)
                                .addComponent(departmentComboBox)
                                .addComponent(addButton)
                                .addComponent(updateButton)
                                .addComponent(deleteButton))
                        .addGroup(layout.createParallelGroup(GroupLayout.Alignment.LEADING)
                                .addComponent(searchLabel)
                                .addComponent(searchTextField)
                                .addComponent(searchButton))
                        .addComponent(scrollPane)
        );

        layout.setVerticalGroup(
                layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                                .addComponent(nameLabel)
                                .addComponent(nameTextField)
                                .addComponent(searchLabel)
                                .addComponent(searchTextField))
                        .addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                                .addComponent(idLabel)
                                .addComponent(idTextField)
                                .addComponent(searchButton))
                        .addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                                .addComponent(ageLabel)
                                .addComponent(ageTextField))
                        .addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                                .addComponent(genderLabel)
                                .addComponent(genderComboBox))
                        .addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                                .addComponent(departmentLabel)
                                .addComponent(departmentComboBox))
                        .addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                                .addComponent(addButton))
                        .addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                                .addComponent(updateButton))
                        .addGroup(layout.createParallelGroup(GroupLayout.Alignment.BASELINE)
                                .addComponent(deleteButton))
                        .addComponent(scrollPane)
        );

        pack();
        setLocationRelativeTo(null);
        setVisible(true);

        studentList = new ArrayList<Student>();
    }

    public static void main(String[] args) {
        new StudentManagementSystem();
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        if(e.getSource() == addButton){
            String name = nameTextField.getText();
            String id = idTextField.getText();
            int age = Integer.parseInt(ageTextField.getText());
            String gender = genderComboBox.getSelectedItem().toString();
            String department = departmentComboBox.getSelectedItem().toString();

            Student student = new Student(name, id, age, gender, department);
            studentList.add(student);

            Object[] row = new Object[5];
            row[0] = student.getName();
            row[1] = student.getId();
            row[2] = student.getAge();
            row[3] = student.getGender();
            row[4] = student.getDepartment();
            model.addRow(row);
        }
        else if(e.getSource() == updateButton){
            int i = table.getSelectedRow();
            String name = nameTextField.getText();
            String id = idTextField.getText();
            int age = Integer.parseInt(ageTextField.getText());
            String gender = genderComboBox.getSelectedItem().toString();
            String department = departmentComboBox.getSelectedItem().toString();

            Student student = studentList.get(i);
            student.setName(name);
            student.setId(id);
            student.setAge(age);
            student.setGender(gender);
            student.setDepartment(department);

            model.setValueAt(name, i, 0);
            model.setValueAt(id, i, 1);
            model.setValueAt(age, i, 2);
            model.setValueAt(gender, i, 3);
            model.setValueAt(department, i, 4);
        }
        else if(e.getSource() == deleteButton){
            int i = table.getSelectedRow();
            studentList.remove(i);
            model.removeRow(i);
        }
        else if(e.getSource() == searchButton){
            String searchText = searchTextField.getText();
            for(int i=0; i<model.getRowCount(); i++){
                String name = model.getValueAt(i, 0).toString();
                String id = model.getValueAt(i, 1).toString();
                if(name.contains(searchText) || id.contains(searchText)){
                    table.setRowSelectionInterval(i, i);
                    break;
                }
            }
        }
    }

    class Student {
        private String name;
        private String id;
        private int age;
        private String gender;
        private String department;

        public Student(String name, String id, int age, String gender, String department) {
            this.name = name;
            this.id = id;
            this.age = age;
            this.gender = gender;
            this.department = department;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public String getId() {
            return id;
        }

        public void setId(String id) {
            this.id = id;
        }

        public int getAge() {
            return age;
        }

        public void setAge(int age) {
            this.age = age;
        }

        public String getGender() {
            return gender;
        }

        public void setGender(String gender) {
            this.gender = gender;
        }

        public String getDepartment() {
            return department;
        }

        public void setDepartment(String department) {
            this.department = department;
        }
    }
}

注意：这只是一个简单的示例，实际的学生管理系统可能需要更多的功能和复杂性。