Não consigo mostrar as perguntas do banco de dados no jframe - NetBeans

Estou fazendo um quiz mas não consigo fazer o jframe mostrar o banco de dados.

código do JFRAME:

>  package view;

import Project.ConnectionProvider;

import java.awt.HeadlessException;

import java.sql.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JOptionPane;

import javax.swing.Timer;

/*

• To change this license header, choose License Headers in Project Properties.

• To change this template file, choose Tools | Templates

• and open the template in the editor.
  /
  /*

• @author tetep
  */
  public class PainelQuiz extends javax.swing.JFrame {

  public String Id = “1”;
  
  public String answer = “1”;
  
  public int min = 0;
  
  public int sec = 0;
  
  public String marks = “0”;
  
  public String rollNo = “1”;
  

  public void answerCheck(){
  
  String studentAnswer = “”;
  
  if(jRadioButton1.isSelected()){
  
  studentAnswer = jRadioButton1.getText();
  
  } else if(jRadioButton2.isSelected()){
  
  studentAnswer = jRadioButton2.getText();
  
  }else if(jRadioButton3.isSelected()){
  
  studentAnswer = jRadioButton3.getText();
  
  }
  

  if(studentAnswer.equals(answer)){
      marks=marks+1;
      String marks1 = String.valueOf(marks);
      jLabel13.setText(marks1);
              
  }
  
  //numero da questao muda
  
   int Id1=Integer.parseInt(Id);
   Id1=Id1+1;
   Id = String.valueOf(Id1);
   
  //
  jRadioButton1.setSelected(false);
  jRadioButton2.setSelected(false);
  jRadioButton3.setSelected(false);
  //
  if(Id.equals("10")){
      
      jButton3.setVisible(false);
  }
  

  }

  public void question(){
  
  try{
  
  Connection con =  ConnectionProvider.getCon();
  
  Statement st = con.createStatement();
  
  ResultSet rs1 = st.executeQuery(“select *from question where id=’”+Id+"’");
  

  while(rs1.next()){
           jLabel4.setText(rs1.getString(1));
           jLabel7.setText(rs1.getString(2));
               jRadioButton1.setText(rs1.getString(3));
               jRadioButton2.setText(rs1.getString(4));
               jRadioButton3.setText(rs1.getString(5));
               answer = rs1.getString(6);
       }
   }
   catch(SQLException e){
       JOptionPane.showMessageDialog(null,e);
   }
  

  }

  public void submit(){

  answerCheck();
   try
   {
       Connection con =  ConnectionProvider.getCon();
       Statement st = con.createStatement();
       st.executeUpdate("update score set marks='"+marks+"");
       String marks1 = String.valueOf(marks);
       
        JOptionPane.showMessageDialog(null,marks1);
       
   } catch(HeadlessException | SQLException e){
   JOptionPane.showMessageDialog(null,e);
   }
  

  }
  /**

  • Creates new form pAINELqUIZ
    */
    public PainelQuiz() {
    initComponents();

  }

  Timer time;

  /**
  
  *
  
  */
  
  public final void PainelQuiz() {
  
  initComponents();
  

  try{
      Connection con =  ConnectionProvider.getCon();
       Statement st = con.createStatement();
       ResultSet rs1 = st.executeQuery("select *from quiz.question where id='"+Id+"'");
       
       while(rs1.next()){
           jLabel4.setText(rs1.getString(1));
           jLabel7.setText(rs1.getString(2));
               jRadioButton1.setText(rs1.getString(3));
               jRadioButton2.setText(rs1.getString(4));
               jRadioButton3.setText(rs1.getString(5));
               answer = rs1.getString(6);
       }
   }
   catch(SQLException e){
       JOptionPane.showMessageDialog(null,e);
   }
  
   //tempo
   
   setLocationRelativeTo(this);
   time = new Timer(1000, new ActionListener() {
       @Override
       public void actionPerformed(ActionEvent e) {
           jLabel12.setText(String.valueOf(sec));
           jLabel11.setText(String.valueOf(min));
           
           if(sec == 60){
               
               sec = 0;
               min++;
               if(min==10){
                   
                   time.stop();
                   answerCheck();
                   submit();
                   
               }
           }
           sec++;
       }
   });
  

  time.start();
  }

  /**

  • 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”)
    
    // 
    
    private void initComponents() {
    

    buttonGroup1 = new javax.swing.ButtonGroup();
    
    buttonGroup2 = new javax.swing.ButtonGroup();
    
    buttonGroup3 = new javax.swing.ButtonGroup();
    
    buttonGroup4 = new javax.swing.ButtonGroup();
    
    jPanel1 = new javax.swing.JPanel();
    
    jLabel1 = new javax.swing.JLabel();
    
    jSeparator1 = new javax.swing.JSeparator();
    
    jLabel2 = new javax.swing.JLabel();
    
    jProgressBar1 = new javax.swing.JProgressBar();
    
    jProgressBar2 = new javax.swing.JProgressBar();
    
    jRadioButton1 = new javax.swing.JRadioButton();
    
    jRadioButton2 = new javax.swing.JRadioButton();
    
    jRadioButton3 = new javax.swing.JRadioButton();
    
    jLabel3 = new javax.swing.JLabel();
    
    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();
    
    jLabel11 = new javax.swing.JLabel();
    
    jLabel12 = new javax.swing.JLabel();
    
    jLabel13 = new javax.swing.JLabel();
    
    jButton3 = new javax.swing.JButton();
    
    jButton4 = new javax.swing.JButton();
    
    jMenuBar1 = new javax.swing.JMenuBar();
    
    jMenu1 = new javax.swing.JMenu();
    
    jMenu2 = new javax.swing.JMenu();
    

    setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

    jLabel1.setIcon(new javax.swing.ImageIcon(getClass().getResource("/view/resources/bulbasauro2.gif"))); // NOI18N

    jLabel2.setIcon(new javax.swing.ImageIcon(getClass().getResource("/view/resources/miau.gif"))); // NOI18N
    
    jLabel2.setMaximumSize(new java.awt.Dimension(536, 500));
    
    jLabel2.setMinimumSize(new java.awt.Dimension(536, 500));
    

    jRadioButton1.setText(“jRadioButton1”);
    
    jRadioButton1.addActionListener(new java.awt.event.ActionListener() {
    
    public void actionPerformed(java.awt.event.ActionEvent evt) {
    
    jRadioButton1ActionPerformed(evt);
    
    }
    
    });
    

    jRadioButton2.setText(“jRadioButton2”);
    
    jRadioButton2.addActionListener(new java.awt.event.ActionListener() {
    
    public void actionPerformed(java.awt.event.ActionEvent evt) {
    
    jRadioButton2ActionPerformed(evt);
    
    }
    
    });
    

    jRadioButton3.setText(“jRadioButton3”);
    
    jRadioButton3.addActionListener(new java.awt.event.ActionListener() {
    
    public void actionPerformed(java.awt.event.ActionEvent evt) {
    
    jRadioButton3ActionPerformed(evt);
    
    }
    
    });
    

    jLabel3.setText(“Questao Número:”);

    jLabel4.setLabelFor(jLabel4);
    jLabel4.setText(“00”);

    jLabel6.setText(“Questão”);

    jLabel7.setText(“jLabel7”);

    jLabel8.setText(“Roll Number”);

    jLabel9.setText(“00”);

    jLabel10.setText(“Tempo”);

    jLabel11.setText(“00”);

    jLabel12.setText(“00”);

    jLabel13.setText(“00”);

    javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
    
    jPanel1.setLayout(jPanel1Layout);
    
    jPanel1Layout.setHorizontalGroup(
    
    jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    
    .addGroup(jPanel1Layout.createSequentialGroup()
    
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    
    .addGroup(jPanel1Layout.createSequentialGroup()
    
    .addContainerGap()
    
    .addComponent(jSeparator1))
    
    .addGroup(jPanel1Layout.createSequentialGroup()
    
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    
    .addGroup(jPanel1Layout.createSequentialGroup()
    
    .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
    
    .addComponent(jProgressBar2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
    
    .addGroup(jPanel1Layout.createSequentialGroup()
    
    .addGap(18, 18, 18)
    
    .addComponent(jLabel1)
    
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
    
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    
    .addComponent(jLabel13)
    
    .addComponent(jProgressBar1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
    
    .addGap(0, 0, Short.MAX_VALUE)))
    
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
    
    .addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 229, javax.swing.GroupLayout.PREFERRED_SIZE))
    
    .addGroup(jPanel1Layout.createSequentialGroup()
    
    .addGap(39, 39, 39)
    
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    
    .addComponent(jRadioButton2)
    
    .addComponent(jRadioButton1)
    
    .addGroup(jPanel1Layout.createSequentialGroup()
    
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
    
    .addGroup(jPanel1Layout.createSequentialGroup()
    
    .addComponent(jLabel6)
    
    .addGap(498, 498, 498)
    
    .addComponent(jLabel5)
    
    .addGap(40, 40, 40)
    
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
    
    .addComponent(jLabel8)
    
    .addComponent(jLabel3)))
    
    .addGroup(jPanel1Layout.createSequentialGroup()
    
    .addComponent(jLabel7, javax.swing.GroupLayout.PREFERRED_SIZE, 549, javax.swing.GroupLayout.PREFERRED_SIZE)
    
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 95, Short.MAX_VALUE)
    
    .addComponent(jLabel10)))
    
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
    
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    
    .addComponent(jLabel4)
    
    .addComponent(jLabel9)
    
    .addGroup(jPanel1Layout.createSequentialGroup()
    
    .addComponent(jLabel11)
    
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
    
    .addComponent(jLabel12))))
    
    .addComponent(jRadioButton3))
    
    .addGap(0, 36, Short.MAX_VALUE)))
    
    .addContainerGap())
    
    );
    
    jPanel1Layout.setVerticalGroup(
    
    jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    
    .addGroup(jPanel1Layout.createSequentialGroup()
    
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    
    .addGroup(jPanel1Layout.createSequentialGroup()
    
    .addGap(191, 191, 191)
    
    .addComponent(jLabel1))
    
    .addGroup(jPanel1Layout.createSequentialGroup()
    
    .addGap(96, 96, 96)
    
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    
    .addGroup(jPanel1Layout.createSequentialGroup()
    
    .addComponent(jProgressBar2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
    
    .addGap(40, 40, 40)
    
    .addComponent(jLabel13)
    
    .addGap(18, 18, 18)
    
    .addComponent(jProgressBar1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
    
    .addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 177, javax.swing.GroupLayout.PREFERRED_SIZE))
    
    .addGap(83, 83, 83)
    
    .addComponent(jSeparator1, javax.swing.GroupLayout.PREFERRED_SIZE, 10, javax.swing.GroupLayout.PREFERRED_SIZE)
    
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
    
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
    
    .addComponent(jLabel3)
    
    .addComponent(jLabel4)
    
    .addComponent(jLabel6))
    
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
    
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    
    .addComponent(jLabel7, javax.swing.GroupLayout.PREFERRED_SIZE, 45, javax.swing.GroupLayout.PREFERRED_SIZE)
    
    .addComponent(jLabel5)
    
    .addGroup(jPanel1Layout.createSequentialGroup()
    
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
    
    .addComponent(jLabel8)
    
    .addComponent(jLabel9))
    
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
    
    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
    
    .addComponent(jLabel10)
    
    .addComponent(jLabel11)
    
    .addComponent(jLabel12))))))
    
    .addGap(18, 18, 18)
    
    .addComponent(jRadioButton1)
    
    .addGap(3, 3, 3)
    
    .addComponent(jRadioButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 28, javax.swing.GroupLayout.PREFERRED_SIZE)
    
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 7, Short.MAX_VALUE)
    
    .addComponent(jRadioButton3))
    
    );
    

    jButton3.setText(“Próximo”);
    
    jButton3.addActionListener(new java.awt.event.ActionListener() {
    
    public void actionPerformed(java.awt.event.ActionEvent evt) {
    
    jButton3ActionPerformed(evt);
    
    }
    
    });
    

    jButton4.setText(“encerrar”);
    
    jButton4.addActionListener(new java.awt.event.ActionListener() {
    
    public void actionPerformed(java.awt.event.ActionEvent evt) {
    
    jButton4ActionPerformed(evt);
    
    }
    
    });
    

    jMenu1.setText(“File”);
    jMenuBar1.add(jMenu1);

    jMenu2.setText(“Edit”);
    jMenuBar1.add(jMenu2);

    setJMenuBar(jMenuBar1);

    javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
    
    getContentPane().setLayout(layout);
    
    layout.setHorizontalGroup(
    
    layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    
    .addComponent(jPanel1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
    
    .addGroup(layout.createSequentialGroup()
    
    .addGap(49, 49, 49)
    
    .addComponent(jButton3)
    
    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
    
    .addComponent(jButton4)
    
    .addGap(63, 63, 63))
    
    );
    
    layout.setVerticalGroup(
    
    layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
    
    .addGroup(layout.createSequentialGroup()
    
    .addContainerGap()
    
    .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
    
    .addGap(18, 18, 18)
    
    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
    
    .addComponent(jButton3)
    
    .addComponent(jButton4, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
    
    .addGap(13, 13, 13))
    
    );
    

    pack();
    }//

  private void jRadioButton1ActionPerformed(java.awt.event.ActionEvent evt) {
  
  // TODO add your handling code here:
  
  if(jRadioButton1.isSelected()){
  
  jRadioButton2.setSelected(false);
  
  jRadioButton3.setSelected(false);
  

  }
  

  }

  private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
  
  // TODO add your handling code here:
  
  answerCheck();
  
  question();
  

  }

  private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {

  // TODO add your handling code here:
   int a = JOptionPane.showConfirmDialog(null, "Realmente quer sair?","Selecione",JOptionPane.YES_NO_OPTION);
   if(a==0){
   
   answerCheck();
   submit(); 
       
   }
  

  }

  private void jRadioButton2ActionPerformed(java.awt.event.ActionEvent evt) {
  
  // TODO add your handling code here:
  
  if(jRadioButton2.isSelected()){
  
  jRadioButton1.setSelected(false);
  
  jRadioButton3.setSelected(false);
  

  }
  

  }

  private void jRadioButton3ActionPerformed(java.awt.event.ActionEvent evt) {
  
  // TODO add your handling code here:
  
  if(jRadioButton3.isSelected()){
  
  jRadioButton2.setSelected(false);
  
  jRadioButton1.setSelected(false);
  

  }
  

  }

  /**

  • @param args the command line arguments
    /
    public static void main(String args[]) {
    / Set the Nimbus look and feel /
    //
    / 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 (ClassNotFoundException ex) {
      java.util.logging.Logger.getLogger(PainelQuiz.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
      } catch (InstantiationException ex) {
      java.util.logging.Logger.getLogger(PainelQuiz.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
      } catch (IllegalAccessException ex) {
      java.util.logging.Logger.getLogger(PainelQuiz.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
      } catch (javax.swing.UnsupportedLookAndFeelException ex) {
      java.util.logging.Logger.getLogger(PainelQuiz.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
      }
      //
      //

    /* Create and display the form */
    
    java.awt.EventQueue.invokeLater(new Runnable() {
    
    public void run() {
    
    new PainelQuiz().setVisible(true);
    
    }
    
    });
    
    }
    

  // Variables declaration - do not modify
  
  private javax.swing.ButtonGroup buttonGroup1;
  
  private javax.swing.ButtonGroup buttonGroup2;
  
  private javax.swing.ButtonGroup buttonGroup3;
  
  private javax.swing.ButtonGroup buttonGroup4;
  
  private javax.swing.JButton jButton3;
  
  private javax.swing.JButton jButton4;
  
  private javax.swing.JLabel jLabel1;
  
  private javax.swing.JLabel jLabel10;
  
  private javax.swing.JLabel jLabel11;
  
  private javax.swing.JLabel jLabel12;
  
  private javax.swing.JLabel jLabel13;
  
  private javax.swing.JLabel jLabel2;
  
  private javax.swing.JLabel jLabel3;
  
  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.JMenu jMenu1;
  
  private javax.swing.JMenu jMenu2;
  
  private javax.swing.JMenuBar jMenuBar1;
  
  private javax.swing.JPanel jPanel1;
  
  private javax.swing.JProgressBar jProgressBar1;
  
  private javax.swing.JProgressBar jProgressBar2;
  
  private javax.swing.JRadioButton jRadioButton1;
  
  private javax.swing.JRadioButton jRadioButton2;
  
  private javax.swing.JRadioButton jRadioButton3;
  
  private javax.swing.JSeparator jSeparator1;
  
  // End of variables declaration
  
  }
  

Código da conecção com o banco:

package Project;
import java.sql.*;

/**
*

• @author tetep
  */
  public class ConnectionProvider {
  public static Connection getCon(){
  try{
  Class.forName(“com.mysql.jdbc.Driver”);
  Connection con = DriverManager.getConnection(“jdbc:mysql://localhost:3306:/quiz”,“root”,"");
  return con;
  }
  catch(ClassNotFoundException | SQLException e){
  return null;
  }
  }

}

código que chama o jframe após o botão ser acionado:

private ProjectButton createButtonToStart() {

ProjectButton startButton = new ProjectButton(“COMEÇAR”);

startButton.setLayoutX(350);

startButton.setLayoutY(300);

PainelQuiz painel = new PainelQuiz();
  
             startButton.setOnAction(new EventHandler<ActionEvent>() {


  	@Override
  	public void handle(ActionEvent arg0) {
                            gameStage.close();
  		painel.setVisible(true);
                            painel.PainelQuiz();
                    }
  });
            
            return startButton;
            //

}