public interface IService<T, ID extends Serializable> {
public void add(T t);
public void delete(ID id);
public T findById(ID id);
public List<T> findByProperty(String property,Serializable value);
public List<T> findByProperties();
public void update(T t);
public void addAll(List<T> ts);
}

这事写的接口 然后新建一个Abstract类在接口那里选了这个接口创建的时候就报错；




java.lang.reflect.InvocationTargetException
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:421)
at org.eclipse.jface.wizard.WizardDialog.run(WizardDialog.java:1029)
at org.eclipse.jdt.internal.ui.wizards.NewElementWizard.performFinish(NewElementWizard.java:134)
at org.eclipse.jdt.internal.ui.wizards.NewClassCreationWizard.performFinish(NewClassCreationWizard.java:79)
at org.eclipse.jface.wizard.WizardDialog.finishPressed(WizardDialog.java:827)
at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:432)
at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:624)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:240)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
at org.eclipse.jface.window.Window.open(Window.java:801)
at org.eclipse.ui.internal.actions.NewWizardShortcutAction.run(NewWizardShortcutAction.java:135)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
Caused by: java.lang.NullPointerException
at org.eclipse.jdt.internal.corext.dom.ScopeAnalyzer.getSignature(ScopeAnalyzer.java:158)
at org.eclipse.jdt.internal.corext.dom.ScopeAnalyzer.access$0(ScopeAnalyzer.java:145)
at org.eclipse.jdt.internal.corext.dom.ScopeAnalyzer$DefaultBindingRequestor.acceptBinding(ScopeAnalyzer.java:111)
at org.eclipse.jdt.internal.corext.dom.ScopeAnalyzer.addInherited(ScopeAnalyzer.java:199)
at org.eclipse.jdt.internal.corext.dom.ScopeAnalyzer.addInherited(ScopeAnalyzer.java:226)
at org.eclipse.jdt.internal.corext.dom.ScopeAnalyzer.addTypeDeclarations(ScopeAnalyzer.java:252)
at org.eclipse.jdt.internal.corext.dom.ScopeAnalyzer.getDeclarationsInScope(ScopeAnalyzer.java:508)
at org.eclipse.jdt.internal.corext.codemanipulation.ContextSensitiveImportRewriteContext.getDeclarationsInScope(ContextSensitiveImportRewriteContext.java:213)
at org.eclipse.jdt.internal.corext.codemanipulation.ContextSensitiveImportRewriteContext.findInContext(ContextSensitiveImportRewriteContext.java:82)
at org.eclipse.jdt.core.dom.rewrite.ImportRewrite.internalAddImport(ImportRewrite.java:927)
at org.eclipse.jdt.core.dom.rewrite.ImportRewrite.addImport(ImportRewrite.java:722)
at org.eclipse.jdt.internal.corext.codemanipulation.StubUtility2.createImplementationStub(StubUtility2.java:404)
at org.eclipse.jdt.internal.corext.codemanipulation.AddUnimplementedMethodsOperation.run(AddUnimplementedMethodsOperation.java:213)
at org.eclipse.jdt.ui.wizards.NewTypeWizardPage.createInheritedMethods(NewTypeWizardPage.java:2528)
at org.eclipse.jdt.ui.wizards.NewClassWizardPage.createTypeMembers(NewClassWizardPage.java:267)
at org.eclipse.jdt.ui.wizards.NewTypeWizardPage.createType(NewTypeWizardPage.java:2078)
at org.eclipse.jdt.internal.ui.wizards.NewClassCreationWizard.finishPage(NewClassCreationWizard.java:70)
at org.eclipse.jdt.internal.ui.wizards.NewElementWizard$2.run(NewElementWizard.java:118)
at org.eclipse.jdt.internal.core.BatchOperation.executeOperation(BatchOperation.java:39)
at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:728)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2344)
at org.eclipse.jdt.core.JavaCore.run(JavaCore.java:4887)
at org.eclipse.jdt.internal.ui.actions.WorkbenchRunnableAdapter.run(WorkbenchRunnableAdapter.java:106)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121)
Root exception:
java.lang.NullPointerException
at org.eclipse.jdt.internal.corext.dom.ScopeAnalyzer.getSignature(ScopeAnalyzer.java:158)
at org.eclipse.jdt.internal.corext.dom.ScopeAnalyzer.access$0(ScopeAnalyzer.java:145)
at org.eclipse.jdt.internal.corext.dom.ScopeAnalyzer$DefaultBindingRequestor.acceptBinding(ScopeAnalyzer.java:111)
at org.eclipse.jdt.internal.corext.dom.ScopeAnalyzer.addInherited(ScopeAnalyzer.java:199)
at org.eclipse.jdt.internal.corext.dom.ScopeAnalyzer.addInherited(ScopeAnalyzer.java:226)
at org.eclipse.jdt.internal.corext.dom.ScopeAnalyzer.addTypeDeclarations(ScopeAnalyzer.java:252)
at org.eclipse.jdt.internal.corext.dom.ScopeAnalyzer.getDeclarationsInScope(ScopeAnalyzer.java:508)
at org.eclipse.jdt.internal.corext.codemanipulation.ContextSensitiveImportRewriteContext.getDeclarationsInScope(ContextSensitiveImportRewriteContext.java:213)
at org.eclipse.jdt.internal.corext.codemanipulation.ContextSensitiveImportRewriteContext.findInContext(ContextSensitiveImportRewriteContext.java:82)
at org.eclipse.jdt.core.dom.rewrite.ImportRewrite.internalAddImport(ImportRewrite.java:927)
at org.eclipse.jdt.core.dom.rewrite.ImportRewrite.addImport(ImportRewrite.java:722)
at org.eclipse.jdt.internal.corext.codemanipulation.StubUtility2.createImplementationStub(StubUtility2.java:404)
at org.eclipse.jdt.internal.corext.codemanipulation.AddUnimplementedMethodsOperation.run(AddUnimplementedMethodsOperation.java:213)
at org.eclipse.jdt.ui.wizards.NewTypeWizardPage.createInheritedMethods(NewTypeWizardPage.java:2528)
at org.eclipse.jdt.ui.wizards.NewClassWizardPage.createTypeMembers(NewClassWizardPage.java:267)
at org.eclipse.jdt.ui.wizards.NewTypeWizardPage.createType(NewTypeWizardPage.java:2078)
at org.eclipse.jdt.internal.ui.wizards.NewClassCreationWizard.finishPage(NewClassCreationWizard.java:70)
at org.eclipse.jdt.internal.ui.wizards.NewElementWizard$2.run(NewElementWizard.java:118)
at org.eclipse.jdt.internal.core.BatchOperation.executeOperation(BatchOperation.java:39)
at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:728)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2344)
at org.eclipse.jdt.core.JavaCore.run(JavaCore.java:4887)
at org.eclipse.jdt.internal.ui.actions.WorkbenchRunnableAdapter.run(WorkbenchRunnableAdapter.java:106)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121)