SQLITE database Manipulating error with java (IDE:Netbeans) -

-

i facing problem sqlite database in java ide netbeans.

i have 4 tables in database , 3 tables of them working last 1 table not working! suppose when want insert data in jtable , database shows values in jtable but inserts , not insert values database!

below action performed on button through data inserted jtable , database!

private void jbutton17actionperformed(java.awt.event.actionevent evt) {     preparedstatement pst = null;     connection conn = null;     try {         string sql = "insert month (no,description,sale,expense,total)                       values (?,?,?,?,?)";         pst = conn.preparestatement(sql);         pst.setstring(1, txt_srm.gettext());         pst.setstring(2, txt_datem.gettext());         pst.setstring(3, txt_tsalem.gettext());         pst.setstring(4, txt_texpm.gettext());         pst.setstring(5, txt_subtm.gettext());         pst.execute();         joptionpane.showmessagedialog(null, "saved!");     } catch (exception e) {         joptionpane.showmessagedialog(null, e);     } }

you should connect database in first statement. i.e.

  con = (yourdb/urdbconnectingclassname)   try {     string sql = "insert month (no,description,sale,expense,total)                   values (?,?,?,?,?)";     pst = conn.preparestatement(sql);     pst.setstring(1, txt_srm.gettext());     pst.setstring(2, txt_datem.gettext());     pst.setstring(3, txt_tsalem.gettext());     pst.setstring(4, txt_texpm.gettext());     pst.setstring(5, txt_subtm.gettext());     pst.execute();     joptionpane.showmessagedialog(null, "saved!"); } catch (exception e) {     joptionpane.showmessagedialog(null, e); }

and if doing so.. must closing db connection in end of method, i.e. 

 }catch(exception e){         joptionpane.showmessagedialog(null, e);     }finally{     try{         rs.close();  //where rs = resultstatement         pst.close();     }catch(exception e){         joptionpane.showmessagedialog(null, e);     } }

if u dont close connection , connecting in method.. might error of database lock! error..

hope you!


Comments

Post a Comment

Popular posts from this blog

Detect support for Shoutcast ICY MP3 without navigator.userAgent in Firefox? -

-
the current version of mozilla firefox 23.0.1, version not support play mp3 shoutcast streams tcp port different 80 (most common 8000 shoutcast 1.9.8). i use flash when mp3 support not available in html5 audio, way detect is: try{ var = document.createelement('audio'); r = !!(a.canplaytype && !!a.canplaytype("audio/mpeg; codecs=mp3").replace(/^no$/,'')) }catch(e){ r = false; } the support mp3 shoutcast streams in firefox added in version 24 . a.canplaytype("audio/mpeg; codecs=mp3") = in chrome , firefox, chrome support, firefox not support, due current code detect not work firefox. the current version of jquery support ie 6 1.10.2, version not has .browser i think "stylized" way testing features , not querying browsers / versions, notwithstanding here see hard not violate "principle". what "stylized" way of detect mp3 icy support without navigator.useragent in firefox? ther...
Read more

web - SVG not rendering properly in Firefox -

-
i have problem svg renderring in firefox. whilst works in safari, chrome or in ie, doesn't work in firefox. inspecting element seems layers there, background visible if it's z-index higher z-index of others. rendered in firefox: svg logo in firefox link original source file: svg file thanks help. ps: used sketch 3 export svg. if helps somehow. you're experiencing bug 995813 . i fixed bug time ago change still making way through release process example display correctly firefox 31 onwards released on 22 july 2014. in meantime if move fill="white" <mask> element child <use> element work around firefox bug.
Read more

java - JavaFX 2 slider labelFormatter not being used -

-
i have following code not label slider "foo50", etc... 1 expect setlabelformatter call, instead seems have no effect (the slider labelled 50, 100, etc , println's dont run). there missing? not implemented in default 2.2 skin? using oracle java 7 package javafxbugtest; import javafx.application.application; import javafx.scene.*; import javafx.scene.control.*; import javafx.stage.*; import javafx.util.stringconverter; public class javafxbugtest extends application { @override public void start(final stage primarystage) { slider cp = new slider(); cp.setlabelformatter(new stringconverter<double>() { @override public string tostring(double t) { system.out.println("nope?"); return "foo" + t.tostring(); } @override public double fromstring(string string) { system.out.println("he...
Read more