Since you're not using the ads.properties file, you'll need to explicitly set your application name and network code for the Session. See withApplicationName and withNetworkCode.

I'll leave this issue open until the example is updated.

I use this file https://github.com/googleads/googleads-java-lib/blob/1.36.0/examples/dfp_axis/src/main/java/dfp/axis/auth/CreateDfpSessionWithoutPropertiesFile.java and I try to modify this part

// Copyright 2014 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dfp.axis.auth;

import com.google.api.ads.common.lib.auth.OfflineCredentials;
import com.google.api.ads.common.lib.auth.OfflineCredentials.Api;
import com.google.api.ads.common.lib.exception.OAuthException;
import com.google.api.ads.common.lib.exception.ValidationException;
import com.google.api.ads.dfp.axis.factory.DfpServices;
import com.google.api.ads.dfp.axis.v201311.Network;
import com.google.api.ads.dfp.axis.v201311.NetworkServiceInterface;
import com.google.api.ads.dfp.lib.client.DfpSession;
import com.google.api.client.auth.oauth2.Credential;

/**

• This example demonstrates how to create a Credential and an DfpSession

• object without using an ads.properties file.
  *

• @author Ray Tsang
  */
  public class CreateDfpSessionWithoutPropertiesFile {

  private static final String CLIENT_ID = "15xxxxxxxnt.com";
  private static final String CLIENT_SECRET = "zQnEloxxxxxxxxxx60";
  private static final String REFRESH_TOKEN = "1/OMxxxxxxx8OkM-unR30zcRFq6";
  private static final String APPLICATION_NAME = "test";

  private static DfpSession createDfpSession(String clientId, String clientSecret,
  String refreshToken, String applicationName) throws OAuthException,
  ValidationException {
  // Create a valid OAuth 2.0 credential without using a properties file.
  Credential credential = new OfflineCredentials.Builder()
  .forApi(Api.DFP)
  .withClientSecrets(clientId, clientSecret)
  .withRefreshToken(refreshToken)
  .build()
  .generateCredential();

  // Create a new DfpSession without using a properties file.
  return new DfpSession.Builder()
  .withApplicationName(applicationName)
  .withOAuth2Credential(credential)
  .build();
  }

  public static void runExample(DfpServices dfpServices, DfpSession dfpSession)
  throws Exception {
  // Get the NetworkService.
  NetworkServiceInterface networkService =
  dfpServices.get(dfpSession, NetworkServiceInterface.class);

  // Gets the current network.
  Network network = networkService.getCurrentNetwork();

  System.out.printf("Current network has network code "%s" and display name "%s".\n",
  network.getNetworkCode(), network.getDisplayName());
  }

  public static void main(String[] args) throws Exception {
  if (CLIENT_ID.equals("INSERT_CLIENT_ID_HERE")
  || CLIENT_SECRET.equals("INSERT_CLIENT_SECRET_HERE")) {
  throw new IllegalArgumentException("Please input your client IDs or secret. "
  + "See https://console.developers.google.com/project");
  }

  if (REFRESH_TOKEN.equals("INSERT_REFRESH_TOKEN_HERE")) {
  throw new IllegalArgumentException(
  "Please input your refresh token. See GetRefreshTokenWithoutPropertiesFile.java.");
  }

  // Create an DfpSession without using a properties file.
  DfpSession dfpSession = createDfpSession(CLIENT_ID, CLIENT_SECRET, REFRESH_TOKEN, APPLICATION_NAME);
  DfpServices dfpServices = new DfpServices();

  runExample(dfpServices, dfpSession);
  }
  }

But it still through exception:

AxisFault
faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Server.userException
faultSubcode:
faultString: java.net.ConnectException: Connection timed out: connect
faultActor:
faultNode:
faultDetail:
{http://xml.apache.org/axis/}stackTrace:java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:345)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:589)
at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:649)
at sun.security.ssl.SSLSocketImpl.<init>(SSLSocketImpl.java:409)
at sun.security.ssl.SSLSocketFactoryImpl.createSocket(SSLSocketFactoryImpl.java:88)
at org.apache.axis.components.net.JSSESocketFactory.create(JSSESocketFactory.java:92)
at org.apache.axis.transport.http.HTTPSender.getSocket(HTTPSender.java:191)
at org.apache.axis.transport.http.HTTPSender.writeToSocket(HTTPSender.java:404)

Kind regards
PM

Can you please start a new thread in the DFP API forum? That's a more appropriate channel for support than the issue tracker.

Closing per the previous comment.