What is JCo in SAP connectivity

Hi all,
            i want to connect to SAP system from java program.Is it that i need a JCO jar file.
I am new to this.the code i got by searching in all the forums for sap connectivity is
import com.sap.mw.jco.JCO;
import com.sap.mw.jco.IRepository;
public class checkSAP{
     private JCO.Client client = null;
     private JCO.Function function = null;
     private IRepository repository = null;
                 try {
                    client = JCO.createClient(
                            connClient,     // SAP client
                            connUser,       // userid
                            connPW,         // password
                            connLang,       // language
                            connHost,       // host name
                            connHostSyst ); // System number
                    client.connect();
catch (JCO.Exception ex) {
                    System.out.println("Caught an exception: \n" + ex);
can anyone plz help me how to create a conncetion and retrive data
Regards
Chandra

Hi chandra,
pls find information on how to use jco here ... Re: Create a Planned order from JAVA JCO
regards, jens

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hii
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Hello
I have seen in these links that JCO is deprecated:
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Hi Marcos,
You can, of course, use SAP JCO in simple Java Project by importing needed Jars.
I provide you a sample of connection class with method that you can use for calling a function.
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regards
package echoFunction;
import java.io.IOException;
import java.util.Properties;
import javax.swing.JOptionPane;
import com.sap.mw.jco.IFunctionTemplate;
import com.sap.mw.jco.JCO;
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     private JCO.Client connection;
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     private JCO.ParameterList paramExport;
     private JCO.ParameterList paramTables;
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               String language, String server, String systemNumber) {
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                    server, systemNumber);
          connection.connect();
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          connection.disconnect();
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                    .toUpperCase());
          function = new JCO.Function(ift);
          paramImport = function.getImportParameterList();
          paramExport = function.getExportParameterList();
          paramTables = function.getTableParameterList();
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          connection.execute(function);
     public void setInputValue(String paramName, String valueInput) {
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               ex.printStackTrace();
          } catch (Exception ex) {
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          paramText += function.getExportParameterList().getString("RESPTEXT");
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package echoFunction;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Properties;
public class Utilities {
     public static Properties loadPropertyFile(String filePath)
               throws IOException {
          Properties properties = new Properties();
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(ur package name here if u have any)
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Message was edited by:
vbr3650

JCO.Client not connected in repository call (EP7)

Hi guys,
please can someone help me with this error msg?
I dont understand why we getting this error msg, for some users they can run reports and others get this msg.
500 Internal Server Error
BEx Web Application
Failed to process request. Please contact your system administrator.
[Hide]
Error Summary
While processing the current request, an exception occured which could not be handled by the application or the framework.
If the information contained on this page doesn't help you to find and correct the cause of the problem, please contact your system administrator.
To facilitate analysis of the problem, keep a copy of this error page. Hint: Most browsers allow to select all content, copy it and then paste it into an empty document (e.g. email or simple text file).
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JCO.Client not connected in repository call
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Server
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BI ABAP     unknown
Java Virtual Machine     Java HotSpot(TM) 64-Bit Server VM - Sun Microsystems Inc. - 1.4.2_12-b03
Operating System     Linux - ia64 - 2.6.9-22.0.1.EL
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Log ID     0012799E22D40054000001AF00006B9400042A20B9AF8861
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Many thanks in advance
Jo-lize

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