Sou novo por aqui estou com o seguinte problema

ERRO
java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.
null

CODIGO ABAIXO alguém pode me ajudar?

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and open the template in the editor.
*/
package br.com.ldsistemas.dal;

import java.sql.*;

//@author Leocadio
public class ModuloConexao {

//Metodo responsavel por estabelecer a conexao com o banco de dados
public static Connection conector() {
    java.sql.Connection conexao = null;
    // A linha abaixo chama o driver de conexao na biblioteca
    String driver = "com.mysql.cj.jdbc.Driver";
    // Armazenando informações referente ao banco de dados
    String url = "jdbc:mysql://localhost/ldsistemas?autoReconnect=true&useSSL=false";
    String user = "root";
    String password = "";
    // Estabelecendo a conexão com o banco de dados

    try {
        Class.forName(driver);
        conexao = DriverManager.getConnection(url, "root", "");
        return conexao;
                
    } catch (Exception e) {
        System.out.println(e);
        return null;
    }
}

public static Connection Conector() {
    throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}

}

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*/
package br.com.ldsistemas.telas;

import java.sql.*;
import br.com.ldsistemas.dal.ModuloConexao;

/**
*

@author Leocadio

*/

public class TelaLogin extends javax.swing.JFrame {

Connection conexao = null;

PreparedStatement pst = null;

ResultSet rs = null;

/**

Creates new form TelaLogin
*/
public TelaLogin() {
initComponents();
conexao = ModuloConexao.conector();
System.out.println(conexao);

}

/**

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() {

jLabel1 = new javax.swing.JLabel();

jLabel2 = new javax.swing.JLabel();

jTextField1 = new javax.swing.JTextField();

jPasswordField1 = new javax.swing.JPasswordField();

btnLogin = new javax.swing.JButton();

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

setTitle(“LD Sistemas - Login”);

setResizable(false);

jLabel1.setFont(new java.awt.Font(“Tahoma”, 1, 14)); // NOI18N
jLabel1.setText(“Usuário”);

jLabel2.setFont(new java.awt.Font(“Tahoma”, 1, 14)); // NOI18N
jLabel2.setText(“Senha”);

btnLogin.setText(“Login”);

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());

getContentPane().setLayout(layout);

layout.setHorizontalGroup(

layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()

.addContainerGap(55, Short.MAX_VALUE)

.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)

.addComponent(btnLogin)

.addGroup(layout.createSequentialGroup()

.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

.addComponent(jLabel1)

.addComponent(jLabel2))

.addGap(18, 18, 18)

.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)

.addComponent(jTextField1)

.addComponent(jPasswordField1, javax.swing.GroupLayout.PREFERRED_SIZE, 187, javax.swing.GroupLayout.PREFERRED_SIZE))))

.addGap(54, 54, 54))

);

layout.setVerticalGroup(

layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

.addGroup(layout.createSequentialGroup()

.addGap(35, 35, 35)

.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)

.addComponent(jLabel1)

.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))

.addGap(33, 33, 33)

.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)

.addComponent(jLabel2)

.addComponent(jPasswordField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))

.addGap(43, 43, 43)

.addComponent(btnLogin)

.addContainerGap(55, Short.MAX_VALUE))

);

pack();

setLocationRelativeTo(null);

}//

/**

@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(TelaLogin.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
  } catch (InstantiationException ex) {
  java.util.logging.Logger.getLogger(TelaLogin.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
  } catch (IllegalAccessException ex) {
  java.util.logging.Logger.getLogger(TelaLogin.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
  } catch (javax.swing.UnsupportedLookAndFeelException ex) {
  java.util.logging.Logger.getLogger(TelaLogin.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 TelaLogin().setVisible(true);

}

});

}
```

// Variables declaration - do not modify

private javax.swing.JButton btnLogin;

private javax.swing.JLabel jLabel1;

private javax.swing.JLabel jLabel2;

private javax.swing.JPasswordField jPasswordField1;

private javax.swing.JTextField jTextField1;

// End of variables declaration

}

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