AddNewQuestion.java source code
import java.sql.*;
import Project.ConnectionProvider;
import java.awt.HeadlessException;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/GUIForms/JFrame.java to edit this template
 */

/**
 *
 * @author Hp
 */
public class AddNewQuestion extends javax.swing.JFrame {
    
    private static final java.util.logging.Logger logger = java.util.logging.Logger.getLogger(AddNewQuestion.class.getName());

    /**
     * Creates new form AddNewQuestion
     */
    public AddNewQuestion() {
        initComponents();
       try{
            Connection con=ConnectionProvider.getCon();
            Statement st=con.createStatement();
            ResultSet rs=st.executeQuery("select count(id) from question"); 
            if (rs.first())
            {
                int id=rs.getInt(1);
                id=id+1;
                String str=String.valueOf(id);
                jLabel5.setText(str);
            }
                else
                jLabel5.setText("1");
        }
            catch (SQLException e)
        {
           JFrame jf=new JFrame();
           jf.setAlwaysOnTop (true);
           JOptionPane.showMessageDialog(jf, e);
        }
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jSeparator1 = new javax.swing.JSeparator();
        jLabel4 = new javax.swing.JLabel();
        jLabel5 = new javax.swing.JLabel();
        jLabel6 = new javax.swing.JLabel();
        jLabel7 = new javax.swing.JLabel();
        jLabel8 = new javax.swing.JLabel();
        jLabel9 = new javax.swing.JLabel();
        jLabel10 = new javax.swing.JLabel();
        jTextField1 = new javax.swing.JTextField();
        jTextField2 = new javax.swing.JTextField();
        jTextField3 = new javax.swing.JTextField();
        jTextField4 = new javax.swing.JTextField();
        jTextField5 = new javax.swing.JTextField();
        jLabel11 = new javax.swing.JLabel();
        jTextField6 = new javax.swing.JTextField();
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jButton3 = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setAlwaysOnTop(true);
        setLocation(new java.awt.Point(150, 183));
        setUndecorated(true);

        jLabel1.setIcon(new javax.swing.ImageIcon(getClass().getResource("/add new question.png"))); // NOI18N

        jLabel2.setFont(new java.awt.Font("Segoe UI", 1, 40)); // NOI18N
        jLabel2.setText("ADD NEW QUESTION");

        jLabel4.setFont(new java.awt.Font("Segoe UI", 1, 20)); // NOI18N
        jLabel4.setText("Question ID:");

        jLabel5.setFont(new java.awt.Font("Segoe UI", 1, 20)); // NOI18N
        jLabel5.setForeground(new java.awt.Color(255, 0, 0));
        jLabel5.setText("00");

        jLabel6.setFont(new java.awt.Font("Segoe UI", 1, 20)); // NOI18N
        jLabel6.setForeground(new java.awt.Color(0, 51, 255));
        jLabel6.setText("Question:");

        jLabel7.setFont(new java.awt.Font("Segoe UI", 1, 20)); // NOI18N
        jLabel7.setText("Option1:");

        jLabel8.setFont(new java.awt.Font("Segoe UI", 1, 20)); // NOI18N
        jLabel8.setText("Option2:");

        jLabel9.setFont(new java.awt.Font("Segoe UI", 1, 20)); // NOI18N
        jLabel9.setText("Option3:");

        jLabel10.setFont(new java.awt.Font("Segoe UI", 1, 20)); // NOI18N
        jLabel10.setText("Option4:");

        jTextField1.setBackground(new java.awt.Color(164, 170, 249));
        jTextField1.setFont(new java.awt.Font("Segoe UI", 1, 20)); // NOI18N

        jTextField2.setFont(new java.awt.Font("Segoe UI", 1, 20)); // NOI18N

        jTextField3.setFont(new java.awt.Font("Segoe UI", 1, 20)); // NOI18N

        jTextField4.setFont(new java.awt.Font("Segoe UI", 1, 20)); // NOI18N

        jTextField5.setFont(new java.awt.Font("Segoe UI", 1, 20)); // NOI18N

        jLabel11.setBackground(new java.awt.Color(153, 153, 255));
        jLabel11.setFont(new java.awt.Font("Segoe UI", 1, 20)); // NOI18N
        jLabel11.setForeground(new java.awt.Color(0, 204, 0));
        jLabel11.setText("Answer");

        jTextField6.setBackground(new java.awt.Color(170, 245, 170));
        jTextField6.setFont(new java.awt.Font("Segoe UI", 1, 20)); // NOI18N

        jButton1.setIcon(new javax.swing.ImageIcon(getClass().getResource("/Close.png"))); // NOI18N
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        jButton2.setFont(new java.awt.Font("Segoe UI", 1, 20)); // NOI18N
        jButton2.setIcon(new javax.swing.ImageIcon(getClass().getResource("/save.png"))); // NOI18N
        jButton2.setText("Save");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });

        jButton3.setFont(new java.awt.Font("Segoe UI", 1, 20)); // NOI18N
        jButton3.setIcon(new javax.swing.ImageIcon(getClass().getResource("/clear.png"))); // NOI18N
        jButton3.setText("Clear");
        jButton3.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton3ActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(12, 12, 12)
                .addComponent(jLabel1)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jLabel2)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addComponent(jButton1)
                .addGap(18, 18, 18))
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jSeparator1)
                .addContainerGap())
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap(129, Short.MAX_VALUE)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jLabel4)
                        .addGap(18, 18, 18)
                        .addComponent(jLabel5))
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jLabel10)
                            .addComponent(jLabel9)
                            .addComponent(jLabel8)
                            .addComponent(jLabel7)
                            .addComponent(jLabel6)
                            .addComponent(jLabel11))
                        .addGap(18, 18, 18)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 240, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                .addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 240, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addComponent(jTextField1)
                            .addComponent(jTextField2)
                            .addComponent(jTextField5)
                            .addComponent(jTextField3)
                            .addComponent(jTextField4)
                            .addComponent(jTextField6, javax.swing.GroupLayout.PREFERRED_SIZE, 700, javax.swing.GroupLayout.PREFERRED_SIZE))))
                .addGap(119, 119, 119))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(18, 18, 18)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jLabel1)
                            .addComponent(jLabel2)))
                    .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                        .addContainerGap()
                        .addComponent(jButton1)
                        .addGap(18, 18, 18)))
                .addComponent(jSeparator1, javax.swing.GroupLayout.PREFERRED_SIZE, 10, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel4)
                    .addComponent(jLabel5))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel6)
                    .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel7)
                    .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel8)
                    .addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jLabel9)
                    .addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel10)
                    .addComponent(jTextField5, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel11)
                    .addComponent(jTextField6, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton2)
                    .addComponent(jButton3))
                .addGap(25, 25, 25))
        );

        pack();
    }// </editor-fold>                        

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
        
        String id = jLabel5.getText();
String name = jTextField1.getText(); 
String opt1 = jTextField2.getText();
String opt2 = jTextField3.getText();
String opt3 = jTextField4.getText();
String opt4 = jTextField5.getText();
String answer = jTextField6.getText();

try {
    Connection con = ConnectionProvider.getCon();
    PreparedStatement ps = con.prepareStatement(
        "INSERT INTO question VALUES (?, ?, ?, ?, ?, ?, ?)"
    );
    ps.setString(1, id);
    ps.setString(2, name);
    ps.setString(3, opt1);
    ps.setString(4, opt2);
    ps.setString(5, opt3);
    ps.setString(6, opt4);
    ps.setString(7, answer);
    ps.executeUpdate();
    JFrame jf = new JFrame();
    jf.setAlwaysOnTop(true);
    JOptionPane.showMessageDialog(jf, "Successfully Updated!");
    jf.dispose(); 

    this.setVisible(false);
    new AddNewQuestion().setVisible(true);
    
} catch (HeadlessException | SQLException e) {
    JFrame jf = new JFrame();
    jf.setAlwaysOnTop(true);
    JOptionPane.showMessageDialog(jf, e);
}
        
    }                                        

    private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
        jTextField1.setText("");
        jTextField2.setText("");
        jTextField3.setText("");
        jTextField4.setText("");
        jTextField5.setText("");
        jTextField6.setText("");
    }                                        

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        // TODO add your handling code here:
        
        adminHome.open=0;
        setVisible(false);
    }                                        

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ReflectiveOperationException | javax.swing.UnsupportedLookAndFeelException ex) {
            logger.log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(() -> new AddNewQuestion().setVisible(true));
    }

    // Variables declaration - do not modify                     
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel10;
    private javax.swing.JLabel jLabel11;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JLabel jLabel6;
    private javax.swing.JLabel jLabel7;
    private javax.swing.JLabel jLabel8;
    private javax.swing.JLabel jLabel9;
    private javax.swing.JSeparator jSeparator1;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JTextField jTextField2;
    private javax.swing.JTextField jTextField3;
    private javax.swing.JTextField jTextField4;
    private javax.swing.JTextField jTextField5;
    private javax.swing.JTextField jTextField6;
    // End of variables declaration                   
}

adminHome.java source code
import javax.swing.JFrame;
import javax.swing.JOptionPane;
/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/GUIForms/JFrame.java to edit this template
 */

/**
 *
 * @author Hp
 */
public class adminHome extends javax.swing.JFrame {
public static int open=0;    
    private static final java.util.logging.Logger logger = java.util.logging.Logger.getLogger(adminHome.class.getName());

    /**
     * Creates new form adminHome
     */
    public adminHome() {
        initComponents();
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {

        jMenuBar2 = new javax.swing.JMenuBar();
        jMenu8 = new javax.swing.JMenu();
        jMenu9 = new javax.swing.JMenu();
        jMenu10 = new javax.swing.JMenu();
        jMenu11 = new javax.swing.JMenu();
        jMenu12 = new javax.swing.JMenu();
        jMenu13 = new javax.swing.JMenu();
        jMenu14 = new javax.swing.JMenu();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setUndecorated(true);

        jMenuBar2.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Navigation Bar", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Segoe UI", 1, 36), new java.awt.Color(0, 153, 153))); // NOI18N

        jMenu8.setIcon(new javax.swing.ImageIcon(getClass().getResource("/Document-New-48x48.png"))); // NOI18N
        jMenu8.setText("Add New Question");
        jMenu8.setFont(new java.awt.Font("Segoe UI", 1, 14)); // NOI18N
        jMenu8.setMargin(new java.awt.Insets(0, 5, 0, 30));
        jMenu8.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jMenu8MouseClicked(evt);
            }
        });
        jMenuBar2.add(jMenu8);

        jMenu9.setIcon(new javax.swing.ImageIcon(getClass().getResource("/Update Question.png"))); // NOI18N
        jMenu9.setText("Update Question");
        jMenu9.setFont(new java.awt.Font("Segoe UI", 1, 14)); // NOI18N
        jMenu9.setMargin(new java.awt.Insets(0, 5, 0, 30));
        jMenuBar2.add(jMenu9);

        jMenu10.setIcon(new javax.swing.ImageIcon(getClass().getResource("/all questions.png"))); // NOI18N
        jMenu10.setText("All Question");
        jMenu10.setFont(new java.awt.Font("Segoe UI", 1, 14)); // NOI18N
        jMenu10.setMargin(new java.awt.Insets(0, 5, 0, 30));
        jMenuBar2.add(jMenu10);

        jMenu11.setIcon(new javax.swing.ImageIcon(getClass().getResource("/delete Question.png"))); // NOI18N
        jMenu11.setText("Delete Question");
        jMenu11.setFont(new java.awt.Font("Segoe UI", 1, 14)); // NOI18N
        jMenu11.setMargin(new java.awt.Insets(0, 5, 0, 30));
        jMenuBar2.add(jMenu11);

        jMenu12.setIcon(new javax.swing.ImageIcon(getClass().getResource("/all student result.png"))); // NOI18N
        jMenu12.setText("All Student Result");
        jMenu12.setFont(new java.awt.Font("Segoe UI", 1, 14)); // NOI18N
        jMenu12.setMargin(new java.awt.Insets(0, 5, 0, 30));
        jMenuBar2.add(jMenu12);

        jMenu13.setIcon(new javax.swing.ImageIcon(getClass().getResource("/Logout.png"))); // NOI18N
        jMenu13.setText("Logout");
        jMenu13.setFont(new java.awt.Font("Segoe UI", 1, 14)); // NOI18N
        jMenu13.setMargin(new java.awt.Insets(0, 5, 0, 30));
        jMenu13.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jMenu13MouseClicked(evt);
            }
        });
        jMenuBar2.add(jMenu13);

        jMenu14.setIcon(new javax.swing.ImageIcon(getClass().getResource("/Close.png"))); // NOI18N
        jMenu14.setText("Exit");
        jMenu14.setFont(new java.awt.Font("Segoe UI", 1, 14)); // NOI18N
        jMenu14.setMargin(new java.awt.Insets(0, 5, 0, 30));
        jMenu14.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jMenu14MouseClicked(evt);
            }
        });
        jMenuBar2.add(jMenu14);

        setJMenuBar(jMenuBar2);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 1366, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 647, Short.MAX_VALUE)
        );

        pack();
    }// </editor-fold>                        

    private void jMenu13MouseClicked(java.awt.event.MouseEvent evt) {                                     
        // TODO add your handling code here:
        JFrame jf=new JFrame(); 
        jf.setAlwaysOnTop(true);
        int a=JOptionPane.showConfirmDialog(jf, "Are you sure you want to Logout", "select", JOptionPane.YES_NO_OPTION); 
        if (a==0) 
        { 
            setVisible(false);
            new loginAdmin().setVisible(true);
        }
    }                                    

    private void jMenu14MouseClicked(java.awt.event.MouseEvent evt) {                                     
        // TODO add your handling code here:
        JFrame jf=new JFrame(); 
        jf.setAlwaysOnTop(true);
        int a=JOptionPane.showConfirmDialog(jf, "Are you sure you want to Exit?", "select", JOptionPane.YES_NO_OPTION); 
        if (a==0) 
        { 
            System.exit(0);
        }
    }                                    

    private void jMenu8MouseClicked(java.awt.event.MouseEvent evt) {                                    
        // TODO add your handling code here:
          if (open == 0) {
        AddNewQuestion form = new AddNewQuestion();
        form.setLocationRelativeTo(this); // Center relative to admin home
        form.setVisible(true);
        form.toFront(); // Bring to front
        open = 1;
    } else {
        JOptionPane.showMessageDialog(this, "A form is already open.");
    }
    }                                   

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ReflectiveOperationException | javax.swing.UnsupportedLookAndFeelException ex) {
            logger.log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(() -> new adminHome().setVisible(true));
    }

    // Variables declaration - do not modify                     
    private javax.swing.JMenu jMenu10;
    private javax.swing.JMenu jMenu11;
    private javax.swing.JMenu jMenu12;
    private javax.swing.JMenu jMenu13;
    private javax.swing.JMenu jMenu14;
    private javax.swing.JMenu jMenu8;
    private javax.swing.JMenu jMenu9;
    private javax.swing.JMenuBar jMenuBar2;
    // End of variables declaration                   
}


Connection provider.java
/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
 */
package Project;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

/**
 *
 * @author Hp
 */

public class ConnectionProvider {
    public static Connection getCon() {
        try {
            Class.forName("com.mysql.cj.jdbc.Driver");  // Updated driver class name
            Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/gems", "root", "123456");
            return con;
        } 
        catch (ClassNotFoundException | SQLException e) 
        {
        
            return null;
        }
    }
}

now why isn't that when jMenu8MouseClicked is clicked its not opening AddNewQuestion