Echosign version 20 jar file?

Hi,

I am new to Echosign and I have a task to upgrade echosign to version20, currently we are using Echosign version15, but  couldn't able to find Echosign.jar anywhere, can somebody help me on this?. May I know from where you guys downloaded the new Echosign.jar file? I chatted with several customer support guys and nobody understood what I am looking for..

Please help me find/get the Echosign.jar file for version20.

If some of you don't know about this Echosign.jar file, then here is a simple explanation,

Echosign had a Echosign.jar file in their website, developers download the jar file, put it in their compilation path, so they can import and use the Echosign classes/methods like below

import echosign.api.clientv15.dto.ArrayOfFileInfo;

import echosign.api.clientv15.dto.CancelDocumentResult;

import echosign.api.clientv15.dto.DocumentCreationInfo;

import echosign.api.clientv15.dto.DocumentKey;

import echosign.api.clientv15.dto.FileInfo;

import echosign.api.clientv15.dto.Pong;

import echosign.api.clientv15.dto.Result;

import echosign.api.clientv15.dto.SenderInfo;

import echosign.api.clientv15.dto.SignatureFlow;

import echosign.api.clientv15.dto.SignatureType;

import echosign.api.clientv15.dto12.SendDocumentInteractiveOptions;

import echosign.api.clientv15.dto12.SendDocumentInteractiveResult;

import echosign.api.clientv15.dto14.AgreementStatus;

import echosign.api.clientv15.dto14.ArrayOfDocumentContent;

import echosign.api.clientv15.dto14.ArrayOfRecipientInfo;

import echosign.api.clientv15.dto14.DocumentContent;

Thanks,

Pravinth

Update: I have used the tool JAX-WS to generate class files from the wsdl, but its not creating the proxy and service folders?.