A JMS implementation integrates into an application server based on the JCA Architecture. The main body includes a base provided with bulges in which three power cables are accommodated, respectively, and a lid over the base with power cables accommodated. Also, optionally, a game timer, low battery and on-off indicators may also be displayed. A locking assembly for a vacuum cleaner including a tank cover and a blower detachably engaged with the tank cover is arranged between the tank cover and the blower.