question: method that rigidly checks if the string consists of digits only . concode_field_sep char BEHAVIOR_INDEX_SEPARATOR concode_elem_sep char SEPARATOR concode_elem_sep char COMPONENT_SEPARATOR concode_elem_sep char SEPARATOR_ENCODED concode_elem_sep String componentPath concode_elem_sep Integer behaviorId concode_elem_sep Integer renderCount concode_elem_sep String listenerInterface concode_field_sep String getListenerInterface concode_elem_sep String decodeComponentPath concode_elem_sep Integer getRenderCount concode_elem_sep String toString concode_elem_sep ComponentInfo parse concode_elem_sep String encodeComponentPath concode_elem_sep String getComponentPath concode_elem_sep Integer getBehaviorId
target: boolean function ( final String arg0 ) { if ( ( arg0 == null ) || ( arg0 . length ( ) == 0 ) ) { return false ; } for ( int loc0 = 0 ; loc0 < arg0 . length ( ) ; ++ loc0 ) { if ( Character . isDigit ( arg0 . charAt ( loc0 ) ) == false ) { return false ; } } return true ; }