No method found error when calling java stored procedured

Question

hi:
i am rather confused about this. i have written several
java stored procedures and all of them work fine. but when i tried another one , the error message 'no method found 'occurs
when i call the procedure from sqlplus.
it' s a simple procedure . but it's very strange and happens
from time to time
my compile shell as following
javac -classpath $ORACLE_HOME/jdbc/lib/classes12.zip GenFiles.java
$ORACLE_HOME/bin/loadjava -u zw/zw@aixtest GenFiles.class
and
my definition as following
create or replace procedure files(chargeCyckeID varchar2, cycleStart varchar2,cycleEnd varchar2,
loginName varchar2, filePath varchar2, start1 number, end1 number, step number)
AS LANGUAGE JAVA
NAME 'GenFiles.genFile(String , String , String , String , String , int , int , int )';
and my java code is here :
import java.sql.*;
import java.io.*;
import oracle.jdbc.driver.*;
public class GenFiles{
     public static void main(String[] args){
          04UU<F7QV\FZ#,V\FZ?*J<#,V\FZ=aJx#,5GB<C{#, ND<~B7>6#,Pr:E?*J<#,Pr:E=aJx#,2=3$#(Iz3IND<~5D<GB<J}#)
     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

Answer 1

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.