JCO problem

[Former Member]

Hi Java Guru,

I am new in Java. However I have try to compile the Java program however i have this error massage as below. Can any Java Guru help me on this.

lai.java:7: package com.sap.mw.jco does not exist

import com.sap.mw.jco.*;

lai.java:17: package JCO does not exist

JCO.Client client = null;

............

Source code as below

/**

• Example1.java

• Property of SAP AG, Walldorf

• (c) Copyright SAP AG, Walldorf, 2000.

• All rights reserved.

*/

import com.sap.mw.jco.*;

/**

• @version 1.0

• @author SAP AG, Walldorf

*/

public class lai {

public static void main(String[] argv)

{

JCO.Client client = null;

try {

// Print the version of the underlying JCO library

System.out.println("\n\nVersion of the JCO-library:\n" +

"----

---

\n" + JCO.getMiddlewareVersion());

// Create a client connection to a dedicated R/3 system

client = JCO.createClient("xxx", // SAP client

"xx", // userid

"xx", // password

"EN", // language

"",// host name

"01"); // system number

// Open the connection

client.connect();

// Get the attributes of the connection and print them

JCO.Attributes attributes = client.getAttributes();

System.out.println("Connection attributes:\n" +

"----

---

\n" + attributes);

// Create the input parameter list

JCO.ParameterList input = JCO.createParameterList();

// Set the first (and only) import parameter

input.appendValue("REQUTEXT", JCO.TYPE_CHAR, 255, "This is my first Jayco example.");

// Create the out parameter list

JCO.ParameterList output = JCO.createParameterList();

// Specify the parameters types the function will be returning

output.addInfo("ECHOTEXT", JCO.TYPE_CHAR, 255);

output.addInfo("RESPTEXT", JCO.TYPE_CHAR, 255);

// Call the function

client.execute("STFC_CONNECTION", input, output);

// Print the result

System.out.println("The function 'STFC_CONNECTION' returned the following parameters:\n" +

"----

---

");

for (int i = 0; i < output.getFieldCount(); i++) {

System.out.println("Name: " + output.getName(i) + " Value: " + output.getString(i));

}//for

// Close the connection

client.disconnect();

// All done

System.out.println("\n\nCongratulations! It worked.");

}

catch (Exception ex) {

System.out.println("Caught an exception: \n" + ex);

if (client != null) client.disconnect();

}

}

}

Message was edited by:

Lord shadow

[Former Member]

Hi,

Apart from adding this file in class path, you need to put the reqd dll file in system32 directory.

download sapjco-ntintel-2.0.5.zip from service.sap.com and put librfc32.dll & sapjcorfc.dll in

system32 directory.

It is used to connect to make the RFC call.

Regards

Pushkar

[Former Member]

hi Lord Shadow,

you need the jco library to compile this class.

you can find it in http://service.sap.com/connectors -> SAP Java Connector

Download the archive for your environment and follow the installation instruction.

After this take the jar file contained in the library and put it into your classpath.

Best Regards

Francesco

[Former Member]

Hi Francesco,

How to put it into the classpath?

import com.sap.mw.jco.*;

[Former Member]

Hi,

Either put it into classpath system variable or put into the same directory as *.java file is.

best,

wg

[Former Member]

I suggest you to use the Eclipse ide to manipulate and compile your java code.

you can find it here: http://www.eclipse.org

If you compile the class manually you can specify your classpath in this way (considering that you putted your jar in this folder c:\javalibs)

javac -classpath c:\javalibs lai.java

Here a useful link to understand the classpath

http://en.wikipedia.org/wiki/Classpath_(Java)

Best Regards,

Francesco