MainDashboard.java

import java.awt.*;
import java.awt.event.*;

public class MainDashboard {
    public static void main(String[] args) {
        Frame frame = new Frame("Student Management System");
        frame.setSize(400, 300);
        frame.setLayout(null);

        // Close the window on clicking the close button
        frame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                frame.dispose();
                System.exit(0);
            }
        });

        Button insertButton = new Button("Insert Student");
        Button updateButton = new Button("Update Student");
        Button deleteButton = new Button("Delete Student");
        Button viewButton = new Button("View Students");

        insertButton.setBounds(100, 30, 200, 40);
        updateButton.setBounds(100, 80, 200, 40);
        deleteButton.setBounds(100, 130, 200, 40);
        viewButton.setBounds(100, 180, 200, 40);

        frame.add(insertButton);
        frame.add(updateButton);
        frame.add(deleteButton);
        frame.add(viewButton);

        frame.setVisible(true);

        // Hook all buttons to their respective GUI classes
        insertButton.addActionListener(e -> StudentInsertGUI.main(null));
        updateButton.addActionListener(e -> StudentUpdateGUI.main(null));
        deleteButton.addActionListener(e -> StudentDeleteGUI.main(null));
        viewButton.addActionListener(e -> StudentViewGUI.main(null));
    }
}