Unused classes in web service auto generated code

[merve klug]

Hi,
i have to use a web service with some classes and methods.
I automatically generate the web service code using netbeans, but there are some unused classes. I can do everything that i was told without using some classes.

in a main method i can do everything by right click->code insert->web service client code like this:

private static Double mod(java.lang.Double arg0, java.lang.Double arg1) {
        newpackage.TTechWebServiceImplService service = new newpackage.TTechWebServiceImplService();
        newpackage.TTechWebService port = service.getTTechWebServiceImplPort();
        return port.mod(arg0, arg1);
    }

and use it:

      int i = Integer.parseInt(request.getParameter("value1"));
                int j = Integer.parseInt(request.getParameter("value2"));

                int result = port.mod(i, j);

these lines do everything needed to mod operation.
but there are two classes Mod and ModResponse
BUT what do the Mod and ModResponse classes do?
They are here:
Mod.java

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlType;


@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "mod", propOrder = {
    "i",
    "j"
})
public class Mod {

    protected int i;
    protected int j;

    /**
     * Gets the value of the i property.
     * 
     */
    public int getI() {
        return i;
    }

    /**
     * Sets the value of the i property.
     * 
     */
    public void setI(int value) {
        this.i = value;
    }

    /**
     * Gets the value of the j property.
     * 
     */
    public int getJ() {
        return j;
    }

    /**
     * Sets the value of the j property.
     * 
     */
    public void setJ(int value) {
        this.j = value;
    }

}

ModResponse.java

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlType;


@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "addResponse", propOrder = {
    "_return"
})
public class ModResponse {

    @XmlElement(name = "return")
    protected int _return;

    /**
     * Gets the value of the return property.
     * 
     */
    public int getReturn() {
        return _return;
    }

    /**
     * Sets the value of the return property.
     * 
     */
    public void setReturn(int value) {
        this._return = value;
    }

}

What should i do with the unused classes; Mod.java and ModResponse.java?
I am wanted to develop a SOA oriented application, so should i use the unused classes to make my app more SOA oriented?
This is my question. Thanks