TAP protocol - retrieve all keys from the bucket

Hello,

I'm using Membase and I need to retrieve all keys from the bucket (using TAP protocol).

I've downloaded jtap and I've compiled this example to retrieve all keys:

--- TapRunner.java ---
import com.membase.jtap.*;
import com.membase.jtap.exporter.*;
import com.membase.jtap.ops.*;

public class TapRunner
{
public static void main(String args[])
{
TapStreamClient client = new TapStreamClient("localhost", 11210, "default", null);
Exporter exporter = new FileExporter("results.txt");
CustomStream tapListener = new CustomStream(exporter, "node1");
tapListener.keysOnly();
tapListener.doDump();
client.start(tapListener);
}
}
--- TapRunner.java ---

I can compile it with no errors with

# javac -cp .:jtap.jar TapRunner.java

But when I run it I receive these errors:

# java -cp .:jtap.jar TapRunner

Exception in thread "main" java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory
at com.membase.jtap.TapStreamClient.(Unknown Source)
at TapRunner.main(TapRunner.java:11)
Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory
at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
at java.lang.ClassLoader.loadClass(ClassLoader.java:323)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:336)
... 2 more

Where is the problem?
Is this the only way to retrieve all keys with TAP protocol, in a txt file?
Can't I iterate all the keys in other ways?

Thanks.