How to secure an OSB service

http://download.oracle.com/docs/cd/E13159_01/osb/docs10gr3/security/owsm.html

Have written a simple java programme as shown below.

package classes;

public class Test {
public String getValue(String name) {
return("hello " + name + " How are you?");
}

public static void main(String[] args) {
Test test = new Test();
System.out.println(test.getValue("arpit"));
}
}

I am creating a web service out of it.

This is the same programme with a bit of modification as i have used in my following post.

http://soa-bpel-esb.blogspot.com/2011/04/how-to-get-wsdl-of-proxy-service-in-osb.html

So now once the web service is created.