java – NullPointerException – Stack overflow in Português

Note that this is two text and environment fields for MySQL for the MVC program and that is giving this java.lang.NullPointerException that is not how to solve

Or code do botão

private void btnCadastraActionPerformed (java.awt.event.ActionEvent evt) {
// EVERYTHING adds your management code here:
Boolean insertion = false;
try {
inseriu = ctrlAdm.insereAdministrator (this.txtNome.getText (), this.txtSenha.getText ()); // linha 102
} catch (SQLException ex) {
Logger.getLogger (FrmCadastraUsuario.class.getName ()). Log (Level.SEVERE, null, ex);
}
yes (inseriu) {
JOptionPane.showMessageDialog (null, "Inserted as successor");
}
}   

One exceção:

Exception in the thread "AWT-EventQueue-0" java.lang.NullPointerException

at view.FrmCadastraUsuario.btnCadastraActionPerformed (FrmCadastraUsuario.java:102)

in view.FrmCadastraUsuario.access $ 000 (FrmCadastraUsuario.java:18)
at view.FrmCadastraUsuario $ 1.actionPerformed (FrmCadastraUsuario.java:48)

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

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

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

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

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

in java.awt.Component.processMouseEvent (Component.java:6539)
in javax.swing.JComponent.processMouseEvent (JComponent.java:3324)
in java.awt.Component.processEvent (Component.java:6304)
on java.awt.Container.processEvent (Container.java:2239)
in java.awt.Component.dispatchEventImpl (Component.java:4889)
in java.awt.Container.dispatchEventImpl (Container.java:2297)
in java.awt.Component.dispatchEvent (Component.java:4711)
in java.awt.LightweightDispatcher.retargetMouseEvent (Container.java:4904)

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

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

in java.awt.Container.dispatchEventImpl (Container.java:2283)
in java.awt.Window.dispatchEventImpl (Window.java:2746)
in java.awt.Component.dispatchEvent (Component.java:4711)
in java.awt.EventQueue.dispatchEventImpl (EventQueue.java:760)
in java.awt.EventQueue.access $ 500 (EventQueue.java:97)
in java.awt.EventQueue $ 3.run (EventQueue.java:709)
in java.awt.EventQueue $ 3.run (EventQueue.java:703)
in java.security.AccessController.doPrivileged (Native method)
in java.security.ProtectionDomain $ JavaSecurityAccessImpl.doIntersectionPrivilege (ProtectionDomain.java:74)

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

in java.awt.EventQueue $ 4.run (EventQueue.java:733)
in java.awt.EventQueue $ 4.run (EventQueue.java:731)
in java.security.AccessController.doPrivileged (Native method)
in java.security.ProtectionDomain $ JavaSecurityAccessImpl.doIntersectionPrivilege (ProtectionDomain.java:74)

in java.awt.EventQueue.dispatchEvent (EventQueue.java:730)
in java.awt.EventDispatchThread.pumpOneEventForFilters (EventDispatchThread.java:205)

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

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

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

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

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