Open `Default Settings` error

[aristotll]

Because the error, default setting is not displayed.

null
java.lang.NullPointerException
	at io.t28.json2java.idea.setting.Json2JavaConfigurable.<init>(Json2JavaConfigurable.java:85)
	at io.t28.json2java.idea.setting.Json2JavaConfigurable.<init>(Json2JavaConfigurable.java:79)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at org.picocontainer.defaults.InstantiatingComponentAdapter.newInstance(InstantiatingComponentAdapter.java:193)
	at com.intellij.util.pico.CachingConstructorInjectionComponentAdapter.doGetComponentInstance(CachingConstructorInjectionComponentAdapter.java:103)
	at com.intellij.util.pico.CachingConstructorInjectionComponentAdapter.instantiateGuarded(CachingConstructorInjectionComponentAdapter.java:80)
	at com.intellij.util.pico.CachingConstructorInjectionComponentAdapter.getComponentInstance(CachingConstructorInjectionComponentAdapter.java:63)
	at com.intellij.openapi.extensions.AbstractExtensionPointBean.instantiate(AbstractExtensionPointBean.java:75)
	at com.intellij.openapi.options.ConfigurableEP$ClassProducer.createElement(ConfigurableEP.java:341)
	at com.intellij.openapi.options.ConfigurableEP.createConfigurable(ConfigurableEP.java:267)
	at com.intellij.openapi.options.ex.ConfigurableWrapper.a(ConfigurableWrapper.java:58)
	at com.intellij.openapi.options.ex.ConfigurableWrapper.getConfigurable(ConfigurableWrapper.java:117)
	at com.intellij.openapi.options.ex.ConfigurableWrapper.cast(ConfigurableWrapper.java:98)
	at com.intellij.openapi.options.ex.ConfigurableWrapper.getDisplayName(ConfigurableWrapper.java:138)
	at com.intellij.openapi.options.ex.Weighted.a(Weighted.java:35)
	at java.util.TimSort.binarySort(TimSort.java:296)
	at java.util.TimSort.sort(TimSort.java:221)
	at java.util.Arrays.sort(Arrays.java:1512)
	at java.util.ArrayList.sort(ArrayList.java:1456)
	at java.util.Collections.sort(Collections.java:175)
	at com.intellij.openapi.options.ex.SortedConfigurableGroup.buildConfigurables(SortedConfigurableGroup.java:53)
	at com.intellij.openapi.options.SearchableConfigurable$Parent$Abstract.getConfigurables(SearchableConfigurable.java:86)
	at com.intellij.openapi.options.newEditor.SettingsTreeView.a(SettingsTreeView.java:299)
	at com.intellij.openapi.options.newEditor.SettingsTreeView.access$1300(SettingsTreeView.java:76)
	at com.intellij.openapi.options.newEditor.SettingsTreeView$MyNode.<init>(SettingsTreeView.java:471)
	at com.intellij.openapi.options.newEditor.SettingsTreeView$MyNode.<init>(SettingsTreeView.java:464)
	at com.intellij.openapi.options.newEditor.SettingsTreeView$MyRoot.buildChildren(SettingsTreeView.java:457)
	at com.intellij.ui.treeStructure.CachingSimpleNode.getChildren(CachingSimpleNode.java:36)
	at com.intellij.ui.treeStructure.SimpleTreeStructure.getChildElements(SimpleTreeStructure.java:25)
	at com.intellij.ui.treeStructure.filtered.FilteringTreeStructure.addToCache(FilteringTreeStructure.java:66)
	at com.intellij.ui.treeStructure.filtered.FilteringTreeStructure.rebuild(FilteringTreeStructure.java:61)
	at com.intellij.ui.treeStructure.filtered.FilteringTreeStructure.<init>(FilteringTreeStructure.java:53)
	at com.intellij.ui.treeStructure.filtered.FilteringTreeStructure.<init>(FilteringTreeStructure.java:44)
	at com.intellij.ui.treeStructure.filtered.FilteringTreeBuilder.<init>(FilteringTreeBuilder.java:53)
	at com.intellij.openapi.options.newEditor.SettingsTreeView$MyBuilder.<init>(SettingsTreeView.java:814)
	at com.intellij.openapi.options.newEditor.SettingsTreeView.<init>(SettingsTreeView.java:206)
	at com.intellij.openapi.options.newEditor.SettingsDialog.treeViewFactory(SettingsDialog.java:78)
	at com.intellij.openapi.options.newEditor.SettingsEditor.<init>(SettingsEditor.java:154)
	at com.intellij.openapi.options.newEditor.SettingsDialog.<init>(SettingsDialog.java:72)
	at com.intellij.openapi.options.newEditor.SettingsDialogFactory.create(SettingsDialogFactory.java:41)
	at com.intellij.ide.actions.ShowSettingsUtilImpl.getDialog(ShowSettingsUtilImpl.java:57)
	at com.intellij.ide.actions.ShowSettingsUtilImpl.showSettingsDialog(ShowSettingsUtilImpl.java:97)
	at com.intellij.ide.actions.TemplateProjectPropertiesAction.actionPerformed(TemplateProjectPropertiesAction.java:28)
	at com.intellij.openapi.actionSystem.ex.ActionUtil$1.run(ActionUtil.java:216)
	at com.intellij.openapi.actionSystem.ex.ActionUtil.performActionDumbAware(ActionUtil.java:233)
	at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.a(ActionMenuItem.java:310)
	at com.intellij.openapi.wm.impl.FocusManagerImpl.runOnOwnContext(FocusManagerImpl.java:911)
	at com.intellij.openapi.wm.impl.IdeFocusManagerImpl.runOnOwnContext(IdeFocusManagerImpl.java:136)
	at com.intellij.openapi.actionSystem.impl.ActionMenuItem$ActionTransmitter.actionPerformed(ActionMenuItem.java:300)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022)
	at com.intellij.openapi.actionSystem.impl.ActionMenuItem.a(ActionMenuItem.java:117)
	at com.intellij.openapi.application.TransactionGuardImpl.a(TransactionGuardImpl.java:86)
	at com.intellij.openapi.application.TransactionGuardImpl.a(TransactionGuardImpl.java:109)
	at com.intellij.openapi.application.TransactionGuardImpl.submitTransaction(TransactionGuardImpl.java:118)
	at com.intellij.openapi.application.TransactionGuard.submitTransaction(TransactionGuard.java:122)
	at com.intellij.openapi.actionSystem.impl.ActionMenuItem.fireActionPerformed(ActionMenuItem.java:117)
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348)
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
	at javax.swing.JToggleButton$ToggleButtonModel.setPressed(JToggleButton.java:308)
	at javax.swing.AbstractButton.doClick(AbstractButton.java:376)
	at com.apple.laf.ScreenMenuItemCheckbox.itemStateChanged(ScreenMenuItemCheckbox.java:193)
	at java.awt.CheckboxMenuItem.processItemEvent(CheckboxMenuItem.java:389)
	at java.awt.CheckboxMenuItem.processEvent(CheckboxMenuItem.java:357)
	at java.awt.MenuComponent.dispatchEventImpl(MenuComponent.java:355)
	at java.awt.MenuComponent.dispatchEvent(MenuComponent.java:343)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:767)
	at java.awt.EventQueue.access$500(EventQueue.java:98)
	at java.awt.EventQueue$3.run(EventQueue.java:715)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:90)
	at java.awt.EventQueue$4.run(EventQueue.java:737)
	at java.awt.EventQueue$4.run(EventQueue.java:735)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:80)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:734)
	at com.intellij.ide.IdeEventQueue.e(IdeEventQueue.java:821)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:649)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:365)
	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)