[SalesForce] Error 500 java rest client , but works on postman

I am using the same code mentioned in https://developer.salesforce.com/docs/atlas.en-us.api_streaming.meta/api_streaming/code_sample_auth_oauth.htm
It works fine in Chrome extension POSTMAN. I am passing the same POST parameters that is used in POSTMAN in my java code. Any help is appreciated.

I am getting 500 error with below response

An internal server error has occurred

An internal server error has occurred

An error has occurred while processing your request. The salesforce.com support team has been notified of the problem. If you believe you have additional information that may be of help in reproducing or correcting the error, please contact Salesforce Support. Please indicate the URL of the page you were requesting, any error id shown on this page as well as any other related information. We apologize for the inconvenience.

Thank you again for your patience and assistance. And thanks for using salesforce.com!

An internal server error has occurred

An error has occurred while processing your request. The salesforce.com support team has been notified of the problem. If you believe you have additional information that may be of help in reproducing or correcting the error, please contact Salesforce Support. Please indicate the URL of the page you were requesting, any error id shown on this page as well as any other related information. We apologize for the inconvenience.

Thank you again for your patience and assistance. And thanks for using salesforce.com!

Error ID: 1328242241-114053 (801801977)

public static void oAuthSessionProvider(String loginHost, String username, String password, String clientId, String secret)
        throws HttpException, IOException
{
    // Set up an HTTP client that makes a connection to REST API.
    DefaultHttpClient client = new DefaultHttpClient();
    HttpParams params = client.getParams();
    HttpClientParams.setCookiePolicy(params, CookiePolicy.RFC_2109);
    params.setParameter(HttpConnectionParams.CONNECTION_TIMEOUT, 30000);

    // Set the SID.
    System.out.println("Logging in as " + username + " in environment " + loginHost);
    String baseUrl = loginHost + "/services/oauth2/token";
    // Send a post request to the OAuth URL.
    HttpPost oauthPost = new HttpPost(baseUrl);
    // The request body must contain these 5 values.
    List<BasicNameValuePair> parametersBody = new ArrayList<BasicNameValuePair>();
    parametersBody.add(new BasicNameValuePair("grant_type", "password"));
    parametersBody.add(new BasicNameValuePair("username", username));
    parametersBody.add(new BasicNameValuePair("password", password));
    parametersBody.add(new BasicNameValuePair("client_id", clientId));
    parametersBody.add(new BasicNameValuePair("client_secret", secret));
    oauthPost.setEntity(new UrlEncodedFormEntity(parametersBody, HTTP.UTF_8));

    // Execute the request.
    System.out.println("POST " + baseUrl + "...\n");
    HttpResponse response = client.execute(oauthPost);
    int code = response.getStatusLine().getStatusCode();
    System.out.println(code);
    System.out.println(response.getStatusLine().getStatusCode());
    String theString = IOUtils.toString((
            new InputStreamReader(response.getEntity().getContent())));
    System.out.println("response-->"+theString);
}