eclipse java db2 jdbc

//language:java
//author:tfy
//time:2009.10.14
//fun:connect to db2 use jdbc driver (type 3)
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class Db2Connect {
static String urlPrefix = "jdbc:db2:";
static String url;
static Connection con;
static Statement stmt;
static ResultSet rs;


public boolean connectToDb2(String serverIp, int serverPort, String DBName, String user, String password)
{
url = urlPrefix + "//" + serverIp + ":"+Integer.toString(serverPort) + "/" + DBName;
System.out.println ("**** Enter class EzJava");
try
{
// Load the driver：
// Class.forName("COM.ibm.db2.jdbc.app.DB2Driver");
Class.forName("COM.ibm.db2.jdbc.net.DB2Driver");
// Class.forName("com.ibm.db2.jcc.DB2Driver");
System.out.println(url);
// Create the connection using the IBM Data Server Driver for JDBC and SQLJ
con = DriverManager.getConnection (url, user, password);
// Commit changes manually
// con.setAutoCommit(false);
System.out.println("**** Created a JDBC connection to the data source");
// Create the Statement
//reference: http://blog.csdn.net/yuchen2008/archive/2007/01/24/1492427.aspx
//stmt = con.createStatement();
stmt = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);
System.out.println("**** Created JDBC Statement object");
}

catch (ClassNotFoundException e)
{
System.err.println("Could not load JDBC driver");
System.out.println("Exception: " + e);
e.printStackTrace();

return false;
}

catch(SQLException ex)