Time Table Genration system

in this project we use java, mysql connectivity to access database. from database access of subject and teacher name is imported and randamly assigned numbers to these and print in the jTable randomly
constraints-:1. each period consist of 1 hr 2. lab are 3 hr continuous 3.each subject have tute 2tutes in a week . 4.7period with lunch break after 4 hour starting 10am and end 5pm
5.lunch 1.40-2.20pm
6.time table for five days week sat and sunday holiday