Hello! I am having trouble listing data from my DB in a jComboBox. The method I use is as follows:
public void setComboBoxSetorChamado(List<Setor>setores){
idSetor = new int[setores.size()+1];
int i = 0;
//jComboBoxSetorChamado.addItem("");
idSetor[i] = 0;
do{
i++;
setor = setores.remove(0);
jComboBoxSetorChamado.addItem(setor.getNome());
idSetor[i] = setor.getId();
}while(!setores.isEmpty());
}
I had already used it in other classes and it worked perfectly, but in the class in question it returns the following error:
fev 10, 2015 10:58:27 AM syschamados.view.chamado.ChamadoFormView <init>
GRAVE: null
java.lang.NullPointerException
at syschamados.view.chamado.ChamadoFormView.setComboBoxUbsChamado(ChamadoFormView.java:66)
at syschamados.view.chamado.ChamadoFormView.<init>(ChamadoFormView.java:44)
at syschamados.view.chamado.ChamadoView.jButtonNovoChamadoActionPerformed(ChamadoView.java:148)
at syschamados.view.chamado.ChamadoView.access$000(ChamadoView.java:21)
at syschamados.view.chamado.ChamadoView$1.actionPerformed(ChamadoView.java:58)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2346)
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:6525)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3321)
at java.awt.Component.processEvent(Component.java:6290)
at java.awt.Container.processEvent(Container.java:2234)
at java.awt.Component.dispatchEventImpl(Component.java:4881)
at java.awt.Container.dispatchEventImpl(Container.java:2292)
at java.awt.Component.dispatchEvent(Component.java:4703)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4898)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4533)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4462)
at java.awt.Container.dispatchEventImpl(Container.java:2278)
at java.awt.Window.dispatchEventImpl(Window.java:2739)
at java.awt.Component.dispatchEvent(Component.java:4703)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:746)
at java.awt.EventQueue.access$400(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:697)
at java.awt.EventQueue$3.run(EventQueue.java:691)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)
at java.awt.EventQueue$4.run(EventQueue.java:719)
at java.awt.EventQueue$4.run(EventQueue.java:717)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:716)
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)
The line that is in error is already highlighted. What can I do in this case?