java - Select Specific value from multiple rows returned by Oracle database -


i trying compare specific value values returned database.
getting multiple rows storestaff trying compare 1 of values returned table..

contains() ,  equals()

are not working.

string qry = "select employe_id storestaff post='admin'"; pstmnt = conn.preparestatement(qry); resultset rs2 = pstmnt.executequery(qry); if (rs2.next()) {     string aa = rs2.getstring("employe_id");      if (aa.contains(un.gettext())) {         this.aa = aa;         joptionpane.showmessagedialog(null, "exists");     } else {         joptionpane.showmessagedialog(null, "username doesn't exist");     } }

can suggestt me better solution or can tell me better solution it?

if use if return first values, in case have use while, loop throw results, can check multiple results, instead can use :

boolean check = false; while (rs2.next()) {     string aa = rs2.getstring("employe_id");     if (aa.contains(un.gettext())) {         this.aa = aa;         check = true;//if value exist change variable true         break;       //and break loop     } }  //when end have check value, if true user exist else no if (check) {     joptionpane.showmessagedialog(null, "exists"); } else {     joptionpane.showmessagedialog(null, "username doesn't exist"); }

Comments

Post a Comment

Popular posts from this blog

vue.js - Create hooks for automated testing -

Image
qa guys complained can't automate frontend testing. because our html looks same outside. lazy hack did this <template> <div :role="$options.name"> ... </div> </template> <script> export default { name: 'vmcomponentname' } </script> which takes name script , applies html. in browser get: <div role="vmcomponentname"> ... </div> line :role="$options.name" goes in every component. is there dry er solutions? please share. additional details i'll explain in details looking for. imagine have vmusercreate form creates user. test case can create user . to automatically test without role, have use following selector: .wrapper > .wrapper > .wrapper > .submit-button the test extremely brittle (will break lot). if use roles can use [role="vmusercreateform"] .submit-button selector. many folds less brittle. so basically, i'm ...
Read more

php - Vagrant up error - Uncaught Reflection Exception: Class DOMDocument does not exist -

i've set bento/ubuntu-16.04 vagrant box using php 5.6, , getting following error quite few times when try , run shell script: "uncaught reflection exception: class domdocument not exist". i've tried adding following top of script (not together), each no success: "sudo apt-get install php5.6-xml", "sudo apt-get install php5-xml", "sudo apt-get install php-dom" i've tried resetting server "sudo service apache2 restart". does have suggestions?
Read more

serial port - hub4com OVERRUN Error -

i trying split physical serial port (com3) 2 or more virtual ports using com0com create virtual ports , hub4com split them. here commands use create virtual ports: install 0 portname=com100 portname=com101 change com100 emubr=yes, emuoverrun=yes change com101 emubr=yes, emuoverrun=yes install 1 portname=com110 portname=com111 change com110 emubr=yes, emuoverrun=yes change com111 emubr=yes, emuoverrun=yes the commands use split port: hub4com --route=0:all --baud=115200 \\.\com3 --baud=115200 \\.\com101 --baud=115200 \\.\com111 here output along error get: com3 open("\\.\com3", baud=115200, data=8, parity=no, stop=1, octs=on, odsr=off, ox=off, ix=off, idsr=off, ito=0) - ok com101 open("\\.\com101", baud=115200, data=8, parity=no, stop=1, octs=on, odsr=off, ox=off, ix=off, idsr=off, ito=0) - ok com111 open("\\.\com111", baud=115200, data=8, parity=no, stop=1, octs=on, odsr=off, ox=off...
Read more