SSLHandshakeException lorsque j'essaie d'envoyer un get ou post https demande de ma webapp dans le serveur tomcat

Follwing exception est levée lors de l'envoyer https demande de ma webapp dans le serveur tomcat

javax.net.le protocole ssl.SSLHandshakeException: le soleil.de sécurité.programme de validation.ValidatorException: PKIX chemin d'accès du bâtiment a échoué: le soleil.de sécurité.fournisseur de.certpath.SunCertPathBuilderException: impossible de trouver le chemin de certification valide pour demandé cible

voici mon servelet

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package LBS;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.Proxy;
import java.net.SocketAddress;
import java.net.URL;
import java.net.URLConnection;
import javax.net.ssl.HttpsURLConnection;
//import javax.net.ssl.SSLContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.cert.X509Certificate;
import javax.net.*;
import javax.net.ssl.*;
import java.security.cert.*;
/**
*
* @author Ruwan
*/
public class LBS2 extends HttpServlet {
/** 
* Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
LBS2 s=new LBS2();
s.myReq();
} finally {            
out.close();
}
}
public void myReq(){
System.setProperty("https.proxyHost", "10.48.242.90");
System.setProperty("https.proxyPort", "3128");
String uri = "https://somthing.com/abc?username=USERNAME&password=PASWORD";
try{
SSLContext sslctx = SSLContext.getInstance("SSL");
sslctx.init(null, new X509TrustManager[] { new MyTrustManager()}, null);
HttpsURLConnection.setDefaultSSLSocketFactory(sslctx.getSocketFactory());
URL url = new URL(uri);
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setRequestMethod("GET");
con.setDoOutput(true);
con.connect();
if (con.getResponseCode() == HttpsURLConnection.HTTP_OK) {
BufferedReader br = new BufferedReader(new
InputStreamReader(con.getInputStream()));
String line;
while((line = br.readLine()) != null) {
System.out.println(line);
}
br.close();
}
con.disconnect();
}
catch(Exception e){
System.out.println(e.toString());
}
}
//<editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the +     sign on the left to edit the code.">
/** 
* Handles the HTTP <code>GET</code> method.
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/** 
* Handles the HTTP <code>POST</code> method.
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/** 
* Returns a short description of the servlet.
* @return a String containing servlet description
*/
@Override
public String getServletInfo() {
return "Short description";
}//</editor-fold>
}
class MyTrustManager implements X509TrustManager {
@Override
public void checkClientTrusted(X509Certificate[] chain, String
authType) {
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String
authType) {
}
@Override
public X509Certificate[] getAcceptedIssuers() {
return new X509Certificate[0];
}
}    

S'il vous plaît aidez-moi à trouver le problème avec SSL Certificat de manutention dans ce code
thnks à l'avance