Help on accessing tables available in SAP through Java

Question

Hi All
I want to access some tables available in SAP through my Java program.  Do I have to write any code for database connectivity or straightaway I can write SQL statements in my Java code?
Can anyone please suggest the sample code for this?
Thanks in Advance,
Vijay.

Answer 1

Hi,
You need JCO(Java Connector)
Check this sample code.
import com.sap.mw.jco.*;
public class JcoTest {
private static JCO.Client theConnection;
private static IRepository theRepository;
public static void main(String[] args) {
  createConnection();
  retrieveRepository(); 
  try {
  JCO.Function function = getFunction("RFC_READ_TABLE");
  JCO.ParameterList listParams = function.getImportParameterList();
  listParams.setValue("BSAUTHORS", "QUERY_TABLE");
  theConnection.execute(function);
  JCO.Table tableList = function.getTableParameterList().getTable("DATA");
  if (tableList.getNumRows() > 0) {
   do {
    for (JCO.FieldIterator fI = tableList.fields();
      fI.hasMoreElements();)
      JCO.Field tabField = fI.nextField();
      System.out.println(tabField.getName()
           + ":t" +
           tabField.getString());
     System.out.println("n");
   while (tableList.nextRow() == true);
  catch (Exception ex) {
   ex.printStackTrace();
private static void createConnection() {
  try {
   theConnection = JCO.createClient("000", "DDIC", "minisap", "en", "sincgo", "00");
   theConnection.connect();
  catch (Exception ex) {
   System.out.println("Failed to connect to SAP system");
private static void retrieveRepository() {
  try {
   theRepository = new JCO.Repository("saprep", theConnection);
  catch (Exception ex)
   System.out.println("failed to retrieve repository");
  public static JCO.Function getFunction(String name) {
    try {
         return theRepository.getFunctionTemplate(name.toUpperCase()).getFunction();
    catch (Exception ex) {
     ex.printStackTrace();
      return null;
Regards
vijay