Error in calling Java Beans

Hi.
I was trying to use a bean that i will run on my jsp. Basically, i have this Matiss_Import.jsp that calls the Matiss_DB_Trans.java by using the
<jsp:useBean id="db_trans" class="Matiss_DB_Trans"/>
My Matiss_DB_Trans.java and Matiss_Import.jsp are both in the same folder (c:\jakarta-tomcat-4.0\webapps\onjava). When i tried to run it, it gave me this error:
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 13 in the jsp file: /Matiss_Import.jsp
Generated servlet error:
C:\jakarta-tomcat-4.0\work\localhost\onjava\Matiss_0005fImport$jsp.java:76: Class org.apache.jsp.Matiss_DB_Trans not found.
Matiss_DB_Trans db_trans = null;
^
An error occurred at line: 13 in the jsp file: /Matiss_Import.jsp
Generated servlet error:
C:\jakarta-tomcat-4.0\work\localhost\onjava\Matiss_0005fImport$jsp.java:79: Class org.apache.jsp.Matiss_DB_Trans not found.
db_trans= (Matiss_DB_Trans)
^
An error occurred at line: 13 in the jsp file: /Matiss_Import.jsp
Generated servlet error:
C:\jakarta-tomcat-4.0\work\localhost\onjava\Matiss_0005fImport$jsp.java:84: Class org.apache.jsp.Matiss_DB_Trans not found.
db_trans = (Matiss_DB_Trans) java.beans.Beans.instantiate(this.getClass().getClassLoader(), "Matiss_DB_Trans");
^
3 errors
Can anyone please help me with this one. The tutorials i read mentioned about a qualified classname. But don't you think mine is a qualified classname already? I mean, i didn't put my Matiss_DB_Trans.java in any package.
Thank you very much in advance.

Try to put Matiss_DB_Trans.class in c:\jakarta-tomcat-4.0\webapps\onjava\WEB-INF\classes. If the folder doesn't exist create it.
Hope it'll work.
Regards,
Anton

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     public static void genFile(String chargeCycleID, String cycleStart, String cycleEnd, String loginName, String filePath, int start, int end, int step){
     try{
          String sqllist = "select customer_id,contract_code,     usercode,ani,ord,"
                    + " agent_code,linkman, customer_name , postcode,paymethod_category_id ,"
                    + " ltrim(to_char(cost,'999999990.99')) cost,call_duration,from listani_file where ord> ? and ord<? order by contract_code";
          String sqlcalls1 = "select a.ani || ',' || a.PASS || ',' || to_char(a.START_TIME,'yyyy-mm-dd hh24:mi:ss') stime || ',' || trunc(a.CALL_DURATION/60)||':'||ltrim(to_char(mod(a.CALL_DURATION,60),'09')) CALL_DURATION || ',' || ltrim(to_char((CALL_AMOUNT/ceil(CALL_DURATION/60)),'999999990.99')) RATE || ',' || ltrim(to_char(a.CALL_AMOUNT,'999999990.99')) CALL_AMOUNT"
                    +" from call_fact_mind a "
                    +" where a.usercode=?"
                    + " and a.ani=? "
                    + " and a.period_key<='" + end + "'"
                    + " and a.period_key>='" + start + "'"
                    + " and a.charge_flag='Y' "
                    + " and a.CALL_DURATION>6"
                    + " and a.CALL_AMOUNT>0"
                    +" order by a.period_key";
          String sqlcalls2 = "select a.ani || ',' || a.PASS || ',' || to_char(a.START_TIME,'yyyy-mm-dd hh24:mi:ss') stime || ',' || trunc(a.CALL_DURATION/60)||':'||ltrim(to_char(mod(a.CALL_DURATION,60),'09')) CALL_DURATION || ',' || ltrim(to_char((CALL_AMOUNT/ceil(CALL_DURATION/60)),'999999990.99')) RATE || ',' || ltrim(to_char(a.CALL_AMOUNT,'999999990.99')) CALL_AMOUNT "
                    + " from call_fact_mind a "
                    + " where a.usercode=?"
                    + " and a.period_key<='" + end + "'"
                    + " and a.period_key>='" + start + "'"
                    + " and a.charge_flag='Y' "
                    + " and a.CALL_DURATION>6"
                    + " and a.CALL_AMOUNT>0"
                    +" order by a.period_key";
          Connection con = new OracleDriver().defaultConnection();
          try{
               int i = start;
               //8y>]2=3$Q-;7
               while( true){
                    if( i>=end ) break;
                    genFile(con, i , i+step, chargeCycleID, loginName, filePath, sqllist, sqlcalls1, sqlcalls2);
                    i += step;
          }catch(Exception ex){
          }finally{
               if( con != null) con.close();
     }catch(Exception exx){}
          8y>]2=3$Iz3IND<~
     private static void genFile(Connection con, int start, int end, String chargeCycleID, String loginName, String filePath, String sqllist, String sqlcalls1, String sqlcalls2) throws Exception{
          PreparedStatement ps1 = null;
          PreparedStatement ps2 = null;
          PreparedStatement ps3 = null;
          ResultSet rs1 = null;
          ResultSet rs2 = null;
          String fileName = filePath + System.getProperty("file.separator") + start + "_" + end + ".txt";
          BufferedWriter writer = null;
          try{
               writer = new BufferedWriter(new FileWriter(fileName));
               ps1 = con.prepareStatement(sqllist);
               ps2 = con.prepareStatement(sqlcalls1);
               ps3 = con.prepareStatement(sqlcalls2);
               ps1.setInt(1, start);
               ps1.setInt(2, end);
               rs1 = ps1.executeQuery();
               //Iz3Ibuffer,V;SPR;6(<GB<J12EP4HkND<~
               StringBuffer strBuffer = new StringBuffer();
               int i =0;
               //Q-;7:OM,=a9{</
               String preContractCode = "";
               String currentContractCode = "";
               while( rs1.next()){
                    currentContractCode = rs1.getString("contract_code");
                    if( rs1.getString("ani") == null){
                         ps2.setString( 1, rs1.getString("usercode"));
                         rs2 = ps2.executeQuery();
                    }else{
                         ps1.setString(1, rs1.getString("usercode"));
                         ps1.setString(2, rs1.getString("ani"));
                         rs2 = ps1.executeQuery();
                    //Hg9{3vOVPB5D:OM,:E#,<SHk:OM,OnM7,contract_costJG:OM,On7QSC
                    if( ! preContractCode.equals(currentContractCode)){
                         //TZG0Cf<SHk?UPP
                         strBuffer.append("\r\n");
                         String contractHead = "\"1\"" + ",\"" + rs1.getString("linkman") + "\",\"" + rs1.getString("customer_name")
                                        + "\",\"" + rs1.getString("contract_code") + "\",\"" + rs1.getString("agent_code")
                                        + "\",\"" + chargeCycleID + "\",\"" + rs1.getString("contract_cost") + "\"";
                         strBuffer.append(contractHead);
                    while( rs2.next()){
                         if( i<1000){
                              i++;
                              strBuffer.append("\"2\"" + rs2.getString(1));
                         }else{
                              String str = strBuffer.toString();
                              writer.write(str, 0, str.length());
                              strBuffer = new StringBuffer();
                              strBuffer.append(rs2.getString(1));
                              i = 1;
                    //<SHk7QSC:O<F
                    if( rs1.getString("ani") == null){
                         String trail = "\"2\"" + ",\"" + "ani: " + "\",\"" + rs1.getString("ani") + "\",\"" + "Total Amount: " + "\",\"" + rs1.getString("cost") + "\"\r\n";
                         strBuffer.append(trail);
                    }else{
                         String trail = "\"2\"" + ",\"" + "usercode: " + "\",\"" + rs1.getString("usercode") + "\",\"" + "Total Amount: " + "\",\"" + rs1.getString("cost") + "\"\r\n";
                         strBuffer.append(trail);
                    preContractCode = currentContractCode;
                    writer.close();
                    rs2.close();
          }catch(Exception ex){
          }finally{
               if( rs1 != null) rs1.close();
               if( rs2 != null) rs2.close();
               if( ps1 != null) ps1.close();
               if( ps2 != null) ps2.close();
i need your help!
regards
daniel wang

Hi again, Daniel,
I'm only guessing here, but unless you've made lots of mistakes when
you copied your code to your post to the forum, your method signatures
don't match. The definition of "genFile" in your java class is quite
different to what you wrote in your PL/SQL wrapper.
Also, you have defined "genFile" to be a private method -- I think it
needs to be public.
Also, I think the "main" method doesn't need to be in the "GenFiles"
class -- perhaps you should remove it.
Also, I think in your PL/SQL wrapper you need to use fully qualified
names, so use "java.lang.String" and not just "String".
Lastly, I think you should use the "-force" and "-resolve" flags
with the "loadjava" command.
Good Luck,
Avi.

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