java.lang.UnsupportedClassVersionError: model/Alunos : Unsupported major.minor version 52.0 at java.lang.ClassLoader.defineClass1(ClassLoader.java:0) at java.lang.ClassLoader.defineClass(ClassLoader.java:800) at java.lang.ClassLoader.defineClass(ClassLoader.java:643) at org.netbeans.modules.form.project.ProjectClassLoader.findClass(ProjectClassLoader.java:172) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) at org.netbeans.modules.form.project.FormClassLoader.findClass(FormClassLoader.java:83) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) at java.lang.Class.forName0(Class.java:0) at java.lang.Class.forName(Class.java:274) at org.netbeans.modules.form.project.ClassPathUtils.loadClass(ClassPathUtils.java:114) at org.netbeans.modules.form.FormUtils.loadClass(FormUtils.java:1577) at org.netbeans.modules.form.FormUtils.loadClass(FormUtils.java:1584) at org.netbeans.modules.form.binding.BindingDesignSupportImpl.treeToType(BindingDesignSupportImpl.java:546) at org.netbeans.modules.form.binding.BindingDesignSupportImpl.access$200(BindingDesignSupportImpl.java:105) at org.netbeans.modules.form.binding.BindingDesignSupportImpl$3.run(BindingDesignSupportImpl.java:650) at org.netbeans.modules.form.binding.BindingDesignSupportImpl$3.run(BindingDesignSupportImpl.java:599) at org.netbeans.api.java.source.JavaSource$MultiTask.run(JavaSource.java:486) at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:609) at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:153) at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:137) at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:204) at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:201) at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176) at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360) at org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:141) at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:88) at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:201) at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:104) at org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:436) at org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:407) at org.netbeans.modules.form.binding.BindingDesignSupportImpl.determineTypeParameter(BindingDesignSupportImpl.java:599) at org.netbeans.modules.form.binding.BindingDesignSupportImpl.determineType(BindingDesignSupportImpl.java:579) at org.netbeans.modules.form.BindingCustomizer$ExpressionNode.(BindingCustomizer.java:1313) at org.netbeans.modules.form.BindingCustomizer.sourceComboActionPerformed(BindingCustomizer.java:1140) at org.netbeans.modules.form.BindingCustomizer.access$1200(BindingCustomizer.java:84) at org.netbeans.modules.form.BindingCustomizer$FormListener.actionPerformed(BindingCustomizer.java:1053) at javax.swing.JComboBox.fireActionEvent(JComboBox.java:1260) at javax.swing.JComboBox.setSelectedItem(JComboBox.java:588) at javax.swing.JComboBox.setSelectedIndex(JComboBox.java:624) at org.netbeans.modules.form.BindingCustomizer.setBindingToUI(BindingCustomizer.java:413) at org.netbeans.modules.form.BindingCustomizer.setBinding(BindingCustomizer.java:292) at org.netbeans.modules.form.editors.TableCustomizer.setContext(TableCustomizer.java:1343) at org.netbeans.modules.form.RADComponentNode.createCustomizer(RADComponentNode.java:507) at org.netbeans.modules.form.FormNode.getCustomizer(FormNode.java:145) at org.netbeans.core.windows.services.NodeOperationImpl.customize(NodeOperationImpl.java:152) at org.openide.actions.CustomizeAction.performAction(CustomizeAction.java:59) at org.openide.util.actions.NodeAction$DelegateAction$1.run(NodeAction.java:586) at org.openide.util.actions.ActionInvoker$1.run(ActionInvoker.java:95) at org.openide.util.actions.ActionInvoker.doPerformAction(ActionInvoker.java:116) at org.openide.util.actions.ActionInvoker.invokeAction(ActionInvoker.java:99) at org.openide.util.actions.NodeAction$DelegateAction.actionPerformed(NodeAction.java:583) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259) at javax.swing.AbstractButton.doClick(AbstractButton.java:376) at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:833) at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:877) at java.awt.Component.processMouseEvent(Component.java:6516) at javax.swing.JComponent.processMouseEvent(JComponent.java:3321) at java.awt.Component.processEvent(Component.java:6281) at java.awt.Container.processEvent(Container.java:2229) at java.awt.Component.dispatchEventImpl(Component.java:4872) at java.awt.Container.dispatchEventImpl(Container.java:2287) at java.awt.Component.dispatchEvent(Component.java:4698) at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4832) at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4492) at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4422) at java.awt.Container.dispatchEventImpl(Container.java:2273) at java.awt.Window.dispatchEventImpl(Window.java:2719) at java.awt.Component.dispatchEvent(Component.java:4698) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:747) at java.awt.EventQueue.access$300(EventQueue.java:103) at java.awt.EventQueue$3.run(EventQueue.java:706) at java.awt.EventQueue$3.run(EventQueue.java:704) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87) at java.awt.EventQueue$4.run(EventQueue.java:720) at java.awt.EventQueue$4.run(EventQueue.java:718) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76) at java.awt.EventQueue.dispatchEvent(EventQueue.java:717) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138) at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)