Polytechnic of Sekayu Library gives service study information in process activity study for university students. weakness process of managing library system still using manual manegement now. Polytechnic of Sekayu used it cause they don’t yet benefited computerization system. To overcome the problem, required develoment library application had computerized. From this problem, the author takes initiative to develoment library application had existed in Polytechnic of Sekayu Library. The method used in this research is waterfall. This method is a method that axact to construct a software not too big and involvement resource human in quantity limited. A software will resulted is an application that manage library data and implemented into database. The application construct with the java programming language, which is supported by NetBeans IDE 6.9 editor into use to record borrow and return book, members data, book data and making reports. This applications can also use by librarian to looking for book with computer is existed. With present this application system system hope can help library Staff in perform process of managing library data and service for members libraries will be better.
                        
                        
                        
                        
                            
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