Adding External Java CLASS to soapUI

Hey,
Iam fairly new to soapUI. Previously I was working with SOATest and Ive this JAVA CLASS integrated with SOATest which we use for testing. I know need to integrate that class with soapUI and I am confused how would I go about that, because Iam not sure if the same api's and Util's exist in soapUI or not. Here's the code which I need to manipulate to integrate it with soapUI

import com.parasoft.api.MethodToolContext;
import java.io.*;
import soaptest.api.SOAPUtil;

public class Profile_parameters
{

    public Profile_parameters()
    {
        userName = "soatest";
        userPassword = "Userpwd@";
        phoneNumber = "613";
        phonePassword = "phonepassword";
        emailDomain = "@ngun.com";
        groupName = "soa group";
        nickname = "soa nickname";
        buddyGroupName = "soa buddy group";
        parentUserGroup = "soa parent group";
    }

    public Object Profile_parameters_launchscript(String bla, MethodToolContext context)
    {
        try
        {
            File f = context.getAbsolutePathFile("counter.txt");
            System.out.println(f.getAbsolutePath());
            BufferedReader in = new BufferedReader(new FileReader(f));
            String str;
            while((str = in.readLine()) != null)
            {
                if(str.compareTo("9") == 0)
                {
                    System.out.println(str);
                    updateCounter(str, f);
                    in.close();
                }
                if(str.compareTo("99") == 0)
                {
                    System.out.println(str);
                    updateCounter(str, f);
                    in.close();
                }
                System.out.println(str);
                updateCounter(str, f);
            }
            in.close();
        }
        catch(IOException e)
        {
            System.out.println("Unable to read from counter.txt");
            e.printStackTrace();
        }
        String s1 = getUser();
        System.out.println("user: " + s1);
        String s2 = getEmail();
        System.out.println("email: " + s2);
        String s3 = getGroupName();
        System.out.println("group: " + s3);
        String s4 = getNickname();
        System.out.println("nick: " + s4);
        String s5 = getUserPassword();
        System.out.println("userPassword: " + s5);
        String s6 = getPhoneNumber();
        System.out.println("phoneNumber: " + s6);
        String s7 = getPhonePassword();
        System.out.println("PhonePassword: " + s7);
        String s8 = getBuddyGroupName();
        System.out.println("BuddyGroup: " + s8);
        String s9 = getParentUserGroup();
        System.out.println("ParentGroup: " + s9);
        String values[] = {
            s1, s2, s3, s4, s5, s6, s7, s8, s9
        };
        Object temp = SOAPUtil.getXMLFromString(values);
        return temp;
    }

Now, the areas in RED are the one I need help with. I have an idea about the last one though. I think we can use XMLHolder.getXMLObject() but Iam not sure but the big issue is I cant find anything in parallel with MethodToolContext in soapUI.

and the second class which actually take this MethodToolContext as an input is :

    private void updateCounter(String c, File f)
    {
        counter = (new Integer(c)).intValue();
        int tmp = counter + 1;
        String tmps = (new Integer(tmp)).toString();
        System.out.println("new counter value is: " + tmps);
        try
        {
            BufferedWriter out = new BufferedWriter(new FileWriter(f));
            out.write(tmps);
            out.close();
        }
        catch(IOException e)
        {
            System.out.println("Unable to write to counter.txt");
            e.printStackTrace();
        }
    }