Student Management System

import javax.swing.*;
import javax.swing.table.DefaultTableModel;
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.ArrayList;

class Student {
    private String name;
    private int age;
    private String course;
    private String studentId;

    public Student(String name, int age, String course, String studentId) {
        this.name = name;
        this.age = age;
        this.course = course;
        this.studentId = studentId;
    }

    public String getName() { return name; }
    public void setName(String name) { this.name = name; }
    public int getAge() { return age; }
    public void setAge(int age) { this.age = age; }
    public String getCourse() { return course; }
    public void setCourse(String course) { this.course = course; }
    public String getStudentId() { return studentId; }
    public void setStudentId(String studentId) { this.studentId = studentId; }
}

class StudentManagementSystem extends JFrame {
    private ArrayList<Student> students = new ArrayList<>();
    private JTable table;
    private DefaultTableModel model;
    private JTextField nameField, ageField, courseField, idField;
    private JButton addButton, editButton, deleteButton, clearButton;
    private boolean isEditing = false;
    private static final Color BACKGROUND_COLOR = Color.WHITE;
    private static final Color TEXT_COLOR = Color.BLACK;
    private static final Color BUTTON_COLOR = new Color(245, 245, 245);
    private static final Color BUTTON_HOVER_COLOR = new Color(230, 230, 230);

    public StudentManagementSystem() {
        setTitle("Student Management System");
        setSize(1000, 700);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLayout(new BorderLayout(10, 10));
        getContentPane().setBackground(BACKGROUND_COLOR);

        initializeComponents();
        setupTable();
        setupActionButtons();
        setupTableListener();

        setLocationRelativeTo(null);
        setVisible(true);
    }

    private void initializeComponents() {
        JPanel mainPanel = new JPanel(new BorderLayout(10, 10));
        mainPanel.setBackground(BACKGROUND_COLOR);
        mainPanel.setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));

        JPanel inputPanel = new JPanel(new GridBagLayout());
        inputPanel.setBackground(BACKGROUND_COLOR);
        inputPanel.setBorder(BorderFactory.createTitledBorder(
            BorderFactory.createLineBorder(Color.LIGHT_GRAY),
            "Student Information"
        ));

        GridBagConstraints gbc = new GridBagConstraints();
        gbc.fill = GridBagConstraints.HORIZONTAL;
        gbc.insets = new Insets(5, 5, 5, 5);

        nameField = createStyledTextField();
        ageField = createStyledTextField();
        courseField = createStyledTextField();
        idField = createStyledTextField();

        JLabel[] labels = {
            createStyledLabel("Name:"),
            createStyledLabel("Age:"),
            createStyledLabel("Course:"),
            createStyledLabel("Student ID:")
        };

        JTextField[] fields = {nameField, ageField, courseField, idField};
        
        for (int i = 0; i < labels.length; i++) {
            gbc.gridx = 0; gbc.gridy = i; gbc.weightx = 0.1;
            inputPanel.add(labels[i], gbc);
            gbc.gridx = 1; gbc.weightx = 0.9;
            inputPanel.add(fields[i], gbc);
        }

        mainPanel.add(inputPanel, BorderLayout.NORTH);
        add(mainPanel, BorderLayout.CENTER);
    }

    private JLabel createStyledLabel(String text) {
        JLabel label = new JLabel(text);
        label.setForeground(TEXT_COLOR);
        label.setFont(new Font("Arial", Font.PLAIN, 14));
        return label;
    }

    private JTextField createStyledTextField() {
        JTextField field = new JTextField();
        field.setPreferredSize(new Dimension(200, 30));
        field.setFont(new Font("Arial", Font.PLAIN, 14));
        field.setBackground(BACKGROUND_COLOR);
        field.setForeground(TEXT_COLOR);
        field.setBorder(BorderFactory.createCompoundBorder(
            BorderFactory.createLineBorder(Color.LIGHT_GRAY),
            BorderFactory.createEmptyBorder(5, 5, 5, 5)
        ));
        return field;
    }

    private void setupTable() {