编译ejb出错...帮帮忙阿

"guestbook.jar": In EJB Book, method setValue() defined in the local interface either does not exist in the bean class, or it is not a public method. Each method in the local interface must have a corresponding public method in the bean class.这句信息已经说的很清楚了呀,你没看出来????实在看不出来就找人帮你看一下.
它把你可能出错的原因都列举出来了.