Olá gente!
Essa é a primeira vez que pergunto em um fórum, sou iniciante (bem iniciante) em java e esto com um probleminha!
To tentando salvar os dados da minha tela de cadastros em um banco de dados postgreSQL
Eu fiz o método pra salvar:
private void salvar(){
conexao = new ConnectionPG();
JOptionPane.showMessageDialog(null, "Salvo com sucesso");
try {
PreparedStatement pst = conexao.conn.prepareStatement("INSERT INTO produto_sys(nome, codigo, ean, ncm, unidade, vlr_venda, margem, vlr_custo, grupo, tributacao, aliquota_icms, cst_csosn) VALUES ( ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?);");
pst.setString(1, getTxtNomeProduto().getText());
pst.setString(2, getTxtCodProduto().getText());
pst.setString(3, getTxtEanProduto().getText());
pst.setString(4, getTxtNcmProduto().getText());
pst.setString(5, "un");
pst.setString(6, getTxtPrecoVendaProduto().getText());
pst.setString(7, getTxtMargemVendaProduto().getText());
pst.setString(8, getTxtPrecoCustoProduto().getText());
pst.setString(9, "1");
pst.setString(10, "1");
pst.setString(11, getTxtAliquitaProduto().getText());
pst.setString(12,"060");
pst.executeUpdate();
JOptionPane.showMessageDialog(null, "Salvo com sucesso");
} catch (SQLException ex) {
JOptionPane.showMessageDialog(null, "Salvo com sucesso\nErro:"+ex.getMessage());
}
}
e adicionei um ActionListener em um JMenuItem com o método acima
private JMenuItem getMenuItemSalvar(){
if(menuItemSalvar == null){
menuItemSalvar = new JMenuItem("Salvar");
Propriedades.setFont(menuItemSalvar);
conexao = new ConnectionPG();
menuItemSalvar.addActionListener((ActionEvent evt) -> {
salvar();
});
}
return menuItemSalvar;
mas toda vida que tento salvar os dados ele da esse erro gigante:
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at br.com.chefsystem.gui.JanelaProduto.salvar(JanelaProduto.java:414)
at br.com.chefsystem.gui.JanelaProduto.lambda$getMenuItemSalvar$0(JanelaProduto.java:103)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.AbstractButton.doClick(AbstractButton.java:376)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:833)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:877)
at java.awt.Component.processMouseEvent(Component.java:6535)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6300)
at java.awt.Container.processEvent(Container.java:2236)
at java.awt.Component.dispatchEventImpl(Component.java:4891)
at java.awt.Container.dispatchEventImpl(Container.java:2294)
at java.awt.Component.dispatchEvent(Component.java:4713)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
at java.awt.Container.dispatchEventImpl(Container.java:2280)
at java.awt.Window.dispatchEventImpl(Window.java:2750)
at java.awt.Component.dispatchEvent(Component.java:4713)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
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:76)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.awt.EventQueue$4.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:109)
at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:184)
at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:229)
at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:227)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:227)
at java.awt.Dialog.show(Dialog.java:1084)
at java.awt.Component.show(Component.java:1673)
at java.awt.Component.setVisible(Component.java:1625)
at java.awt.Window.setVisible(Window.java:1014)
at java.awt.Dialog.setVisible(Dialog.java:1005)
at br.com.chefsystem.gui.JanelaProduto.iniciarJanela(JanelaProduto.java:448)
at br.com.chefsystem.gui.JanelaProduto.<init>(JanelaProduto.java:455)
at br.com.chefsystem.gui.JanelaPricipal.lambda$getMenuPrincipal$0(JanelaPricipal.java:37)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.AbstractButton.doClick(AbstractButton.java:376)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:833)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:877)
at java.awt.Component.processMouseEvent(Component.java:6535)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
at java.awt.Component.processEvent(Component.java:6300)
at java.awt.Container.processEvent(Container.java:2236)
at java.awt.Component.dispatchEventImpl(Component.java:4891)
at java.awt.Container.dispatchEventImpl(Container.java:2294)
at java.awt.Component.dispatchEvent(Component.java:4713)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466)
at java.awt.Container.dispatchEventImpl(Container.java:2280)
at java.awt.Window.dispatchEventImpl(Window.java:2750)
at java.awt.Component.dispatchEvent(Component.java:4713)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
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:76)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.awt.EventQueue$4.run(EventQueue.java:731)
at java.awt.EventQueue$4.run(EventQueue.java:729)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
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)
To Usando o NetBeans, mas não to usando arquivos prontos de JFrame.
Quem puder me dar uma mãozinha!
Oque eu to fazendo de errado??
Desde já eu agradeço, gente!
vlw
