question: singleton retrieval method . concode_field_sep IAnnotationCreator instance concode_elem_sep long serialVersionUID concode_field_sep JComponent createAnnotationView
target: IAnnotationCreator function ( ) { if ( AnnotationCreatorBubble . instance == null ) { AnnotationCreatorBubble . instance = new AnnotationCreatorBubble ( ) ; } return AnnotationCreatorBubble . instance ; }