ok i understand what i give wrong message ...
see i have one jsp page iam posting here jsp code
see in this jsp code first field is loading/unloading plan doc no.these field is not manual enter field we take the value from loading/unloading plan Table ok.my requirement is if suppose loading/unloading plan table are having 3 fields ,in the name of docno1,docno2,docno3.iam trying to open this jsp(which i posted).after opening the jsp loading/unloading plan the first filed docno filed is docno4(because like that auto generated).i think this understandable..