swing - how to resolve ,"AWT-EventQueue-0" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 -

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    public class queryresult extends javax.swing.jframe {     int pos=0;        string companyvalue;        string colorvalue;        string reviewvalue;         public queryresult() {             companyvalue=newjframe1.query_company;              colorvalue=newjframe1.query_color;            reviewvalue=newjframe1.query_review;             system.out.println("vaule coming "+companyvalue);             system.out.println("value "+colorvalue);             system.out.println("value "+reviewvalue);             initcomponents();             showitem(pos);         }         public void getconncetion()          {             connection conshow=null;             string userquery="";             resultset showdata=null;              try             {                 class.forname("oracle.jdbc.driver.oracledriver");                 conshow=drivermanager.getconnection("jdbc:oracle:thin:@localhost:1521:xe","system","root");             }catch(classnotfoundexception ex)                     {                     } catch (sqlexception ex) {                 logger.getlogger(queryresult.class.getname()).log(level.severe, null, ex);             }          }          /**          *          * @return          */         public list<itemshow> getitemslist()         {             connection conshow=null;             string userquery="";             resultset showdata=null;              try             {                 class.forname("oracle.jdbc.driver.oracledriver");                 conshow=drivermanager.getconnection("jdbc:oracle:thin:@localhost:1521:xe","system","root");             }catch(classnotfoundexception ex)                     {                         ex.printstacktrace();                     } catch (sqlexception ex) {                 logger.getlogger(queryresult.class.getname()).log(level.severe, null, ex);             }              preparedstatement stmt=null;            list<itemshow> list=new arraylist<itemshow>();           itemshow item;           userquery="select * recorddata company_nm='"+companyvalue+"'and review= '"+reviewvalue+"'and color_nm= '"+colorvalue+"'";            try {                 stmt=conshow.preparestatement(userquery);                  showdata=stmt.executequery();                 while(showdata.next())                      {                          item =new itemshow(showdata.getint(1),showdata.getstring(2),showdata.getstring(3),                                  showdata.getstring(4),showdata.getstring(5),showdata.getstring(6),showdata.getstring(7),showdata.getbytes(8));                          list.add(item);                      }                 return list;                 } catch (sqlexception ex) {                 logger.getlogger(queryresult.class.getname()).log(level.severe, null, ex);                 return null;             }         }          public void showitem(int index)         {              jtextfield_id.settext(integer.tostring(getitemslist().get(index).getid()));     jtextfield_company.settext(getitemslist().get(index).getcompany());     jtextfield_model.settext(getitemslist().get(index).getmodel());     jtextfield_style.settext(getitemslist().get(index).getstyle());     jtextfield_color.settext(getitemslist().get(index).getcolor());     jtextfield_quality.settext(getitemslist().get(index).getquality());     jtextfield_review.settext(getitemslist().get(index).getreview());        imageicon icon= new imageicon(getitemslist().get(index).getimage());               image image=icon.getimage().getscaledinstance(jlabel2.getwidth(),jlabel2.getheight(),image.scale_smooth);                    jlabel2.seticon(new imageicon(image));         }

the values of companyvalue,colorvalue,reviewvalue taken frame choicebox. when user clicks on submit button on frame1 second frame should come in picture , shows frame2 required data (which read database).

above code throws exception in thread "awt-eventqueue-0" java.lang.indexoutofboundsexception. don't know why? gives error

exception in thread "awt-eventqueue-0" java.lang.indexoutofboundsexception: index: 0, size: 0

at java.util.arraylist.rangecheck(arraylist.java:635) @ java.util.arraylist.get(arraylist.java:411) @ javaapplication1.queryresult.showitem(queryresult.java:156) @ javaapplication1.queryresult.<init>(queryresult.java:50) @ javaapplication1.queryresult$12.run(queryresult.java:490) @ java.awt.event.invocationevent.dispatch(invocationevent.java:251) @ java.awt.eventqueue.dispatcheventimpl(eventqueue.java:733) @ java.awt.eventqueue.access$200(eventqueue.java:103) @ java.awt.eventqueue$3.run(eventqueue.java:694) @ java.awt.eventqueue$3.run(eventqueue.java:692) @ java.security.accesscontroller.doprivileged(native method) @ java.security.protectiondomain$1.dointersectionprivilege(protectiondomain.java:76) @ java.awt.eventqueue.dispatchevent(eventqueue.java:703) @ java.awt.eventdispatchthread.pumponeeventforfilters(eventdispatchthread.java:242) @ java.awt.eventdispatchthread.pumpeventsforfilter(eventdispatchthread.java:161) @ java.awt.eventdispatchthread.pumpeventsforhierarchy(eventdispatchthread.java:150) @ java.awt.eventdispatchthread.pumpevents(eventdispatchthread.java:146) @ java.awt.eventdispatchthread.pumpevents(eventdispatchthread.java:138) @ java.awt.eventdispatchthread.run(eventdispatchthread.java:91)

might query returns 0 rows.

make sure getitemslist() not empty


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