Não consigo jogar os dados para o banco de dados MYSQL

Essa é minha conexão do MYSQL, acredito que seja do Driver JDBC porém ja fiz de tudo, como trocar para mais atual, para uma antiga, refazer todo o código e nada.

ele apresentar esse erro: Exception in thread “AWT-EventQueue-0” java.lang.NullPointerException

at projetocurso.Estoque.ProdutoBD.preencher(ProdutoBD.java:14)

at projetocurso.Estoque.Model.Tela1.jButton1ActionPerformed(Tela1.java:101)

at projetocurso.Estoque.Model.Tela1.access$000(Tela1.java:17)

at projetocurso.Estoque.Model.Tela1$1.actionPerformed(Tela1.java:46)

at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)

at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)

at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)

at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)

at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)

at java.awt.Component.processMouseEvent(Component.java:6539)

at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)

at java.awt.Component.processEvent(Component.java:6304)

at java.awt.Container.processEvent(Container.java:2239)

at java.awt.Component.dispatchEventImpl(Component.java:4889)

at java.awt.Container.dispatchEventImpl(Container.java:2297)

at java.awt.Component.dispatchEvent(Component.java:4711)

at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4904)

at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4535)

at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4476)

at java.awt.Container.dispatchEventImpl(Container.java:2283)

at java.awt.Window.dispatchEventImpl(Window.java:2746)

at java.awt.Component.dispatchEvent(Component.java:4711)

at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:760)

at java.awt.EventQueue.access$500(EventQueue.java:97)

at java.awt.EventQueue$3.run(EventQueue.java:709)

at java.awt.EventQueue$3.run(EventQueue.java:703)

at java.security.AccessController.doPrivileged(Native Method)

at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)

at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:84)

at java.awt.EventQueue$4.run(EventQueue.java:733)

at java.awt.EventQueue$4.run(EventQueue.java:731)

at java.security.AccessController.doPrivileged(Native Method)

at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)

at java.awt.EventQueue.dispatchEvent(EventQueue.java:730)

at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)

at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)

at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)

at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

public class BancoDados {

private Connection conexao;

public void conectar (){

try {

System.out.println(“Conectando ao banco de dados”);

Class.forName(“com.mysql.cj.jdbc.Driver”);

conexao = (Connection) DriverManager.getConnection(

“jdbc:mysql://localhost:3306/estoque”,“root”,“root”);

System.out.println(“Sucesso de conexão”);

} catch (SQLException ex){

System.out.println("Conexão não estabelecida: ");

} catch (ClassNotFoundException ex ){

System.out.println(“Falha não encontrou classe”);

}

}

public void desconectar() {

try {

if (conexao !=null && !conexao.isClosed())

{

conexao.close();

System.out.println(“Desconectado com sucesso”);

}

}

catch (SQLException ex){

System.out.println(“Erro ao desconectar” + ex.getMessage());

}

}