Is there a JDBC 4.1 driver for DB2?

Question 1

The db2 driver for JDBC v3 is called db2jcc.jar

For version 4, the JDBC driver for DB2 is called db2jcc4.jar, and the documentation says: JDBC 4.0 or later functions.

Your question is specific for JDBC 4.1, however the DB2 documentation does not say anything about this JDBC specific release (RowSetProviderClass and auto-close of connection, statement an resultSet)

It does not seem that this jdbc driver is available for this jdbc release.

http://pic.dhe.ibm.com/infocenter/db2luw/v10r5/topic/com.ibm.db2.luw.apdv.java.doc/src/tpc/imjcc_cjvintro.html

List of db2 jdbc drivers: http://www-01.ibm.com/support/docview.wss?uid=swg21363866

Question 2

As a follow up answer to what @AngocA mentioned above, I developed a simple program to test the DB2 driver to check its compliance level with JDBC. I found that the first DB2 driver claiming such support is driver 4.13.127.

So any thing after that should also support JDBC 4.1

Here is my simple program you can use to check for the compliance level:

import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
import java.sql.SQLException;

public class tester {
    // Replace these info with your DB2 info
    private final static String hostName = "mydb2.db2.com";
    private final static String portNum = "50000";
    private final static String userName = "dasusr";
    private final static String password = "db2sdin";
    private final static String dbName = "mydb";

    private final static String fullURL = "jdbc:db2://" + hostName + ":" + portNum
                                          + "/" + dbName + ":" + "user=" + userName
                                          + ";password=" + password + ";";

    public static void main(String[] args) {
        Connection con = null;
        try {
            con = DriverManager.getConnection(fullURL);
            DatabaseMetaData conMD = con.getMetaData();    
            String driverName = conMD.getDriverName();
            String driverVersion = conMD.getDriverVersion();
            String jdbcVersion = conMD.getJDBCMajorVersion()
                                 +"."+ conMD.getJDBCMinorVersion();
            System.out.println("driverName: " + driverName + "\n"
                                +"driverVersion: "+ driverVersion + "\n"
                                +"jdbcVersion: "+ jdbcVersion);
        } catch (SQLException e) {
            e.printStackTrace();
        } 
    }
}

In your .classpath which would look like this in the Navigator tab in eclipse:

add the location of the driver you would like to test like this:

<classpath>
    <classpathentry kind="src" path="src"/>
    <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse
                          .jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>

    <!-- driver_4.13.127  -->
    <classpathentry kind="lib" path="driver_4.13.127/db2jcc_license_cisuz.jar"/>
    <classpathentry kind="lib" path="driver_4.13.127/db2jcc4.jar"/>

    <classpathentry kind="output" path="bin"/>
</classpath>

You should then get an output similar to this:

driverName: IBM Data Server Driver for JDBC and SQLJ
driverVersion: 4.13.127
jdbcVersion: 4.1