Bug 80473 [rulers][preferences] allow disabling of range indicator on left of java editor
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
ActionGroup oeg, ovg, jsg, sg;
		fActionGroups= new CompositeActionGroup(new ActionGroup[] {
			oeg= new OpenEditorActionGroup(this),
			sg= new ShowActionGroup(this),
			ovg= new OpenViewActionGroup(this),
			jsg= new JavaSearchActionGroup(this)
		});
		fContextMenuGroup= new CompositeActionGroup(new ActionGroup[] {oeg, ovg, sg, jsg});
		fFoldingGroup= new FoldingActionGroup(this, getViewer());
		ResourceAction resAction= new TextOperationAction(JavaEditorMessages.getBundleForConstructedKeys(), "ShowJavaDoc.", this, ISourceViewer.INFORMATION, true); 
		resAction= new InformationDispatchAction(JavaEditorMessages.getBundleForConstructedKeys(), "ShowJavaDoc.", (TextOperationAction) resAction); 
		resAction.setActionDefinitionId(IJavaEditorActionDefinitionIds.SHOW_JAVADOC);
		setAction("ShowJavaDoc", resAction); 
		PlatformUI.getWorkbench().getHelpSystem().setHelp(resAction, IJavaHelpContextIds.SHOW_JAVADOC_ACTION);
		Action action= new GotoMatchingBracketAction(this);
		action.setActionDefinitionId(IJavaEditorActionDefinitionIds.GOTO_MATCHING_BRACKET);
		setAction(GotoMatchingBracketAction.GOTO_MATCHING_BRACKET, action);
		action= new TextOperationAction(JavaEditorMessages.getBundleForConstructedKeys(),"ShowOutline.", this, JavaSourceViewer.SHOW_OUTLINE, true); 
		action.setActionDefinitionId(IJavaEditorActionDefinitionIds.SHOW_OUTLINE);
		setAction(IJavaEditorActionDefinitionIds.SHOW_OUTLINE, action);
		PlatformUI.getWorkbench().getHelpSystem().setHelp(action, IJavaHelpContextIds.SHOW_OUTLINE_ACTION);
		action= new TextOperationAction(JavaEditorMessages.getBundleForConstructedKeys(),"OpenStructure.", this, JavaSourceViewer.OPEN_STRUCTURE, true); 
		action.setActionDefinitionId(IJavaEditorActionDefinitionIds.OPEN_STRUCTURE);
		setAction(IJavaEditorActionDefinitionIds.OPEN_STRUCTURE, action);
		PlatformUI.getWorkbench().getHelpSystem().setHelp(action, IJavaHelpContextIds.OPEN_STRUCTURE_ACTION);
		action= new TextOperationAction(JavaEditorMessages.getBundleForConstructedKeys(),"OpenHierarchy.", this, JavaSourceViewer.SHOW_HIERARCHY, true); 
		action.setActionDefinitionId(IJavaEditorActionDefinitionIds.OPEN_HIERARCHY);
		setAction(IJavaEditorActionDefinitionIds.OPEN_HIERARCHY, action);
		PlatformUI.getWorkbench().getHelpSystem().setHelp(action, IJavaHelpContextIds.OPEN_HIERARCHY_ACTION);
		fEncodingSupport= new DefaultEncodingSupport();