diff --git a/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/ApiClient.java b/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/ApiClient.java
index 8d38c18e907c..7810e5675480 100644
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/ApiClient.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/ApiClient.java
@@ -143,8 +143,8 @@ public class ApiClient {
 
     // Setup authentications (key: authentication name, value: authentication).
     authentications = new HashMap<String, Authentication>();
-    authentications.put("api_key", new ApiKeyAuth("header", "api_key"));
     authentications.put("petstore_auth", new OAuth());
+    authentications.put("api_key", new ApiKeyAuth("header", "api_key"));
     // Prevent the authentications from being modified.
     authentications = Collections.unmodifiableMap(authentications);
   }
diff --git a/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/ApiException.java b/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/ApiException.java
index 6d4b388a623f..157b37036f39 100644
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/ApiException.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/ApiException.java
@@ -3,7 +3,7 @@ package io.swagger.client;
 import java.util.Map;
 import java.util.List;
 
-@javax.annotation.Generated(value = "class io.swagger.codegen.languages.JavaClientCodegen", date = "2015-11-21T20:11:09.490+08:00")
+@javax.annotation.Generated(value = "class io.swagger.codegen.languages.JavaClientCodegen", date = "2015-11-25T15:16:28.364+08:00")
 public class ApiException extends Exception {
   private int code = 0;
   private Map<String, List<String>> responseHeaders = null;
diff --git a/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/Configuration.java b/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/Configuration.java
index 9399e3bed44a..473891b11776 100644
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/Configuration.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/Configuration.java
@@ -1,6 +1,6 @@
 package io.swagger.client;
 
-@javax.annotation.Generated(value = "class io.swagger.codegen.languages.JavaClientCodegen", date = "2015-11-21T20:11:09.490+08:00")
+@javax.annotation.Generated(value = "class io.swagger.codegen.languages.JavaClientCodegen", date = "2015-11-25T15:16:28.364+08:00")
 public class Configuration {
   private static ApiClient defaultApiClient = new ApiClient();
 
diff --git a/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/Pair.java b/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/Pair.java
index b1b4a5565a65..83b0fc79f8c1 100644
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/Pair.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/Pair.java
@@ -1,6 +1,6 @@
 package io.swagger.client;
 
-@javax.annotation.Generated(value = "class io.swagger.codegen.languages.JavaClientCodegen", date = "2015-11-21T20:11:09.490+08:00")
+@javax.annotation.Generated(value = "class io.swagger.codegen.languages.JavaClientCodegen", date = "2015-11-25T15:16:28.364+08:00")
 public class Pair {
     private String name = "";
     private String value = "";
diff --git a/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/StringUtil.java b/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/StringUtil.java
index f5cb2680b101..c77fd0a42eda 100644
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/StringUtil.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/StringUtil.java
@@ -1,6 +1,6 @@
 package io.swagger.client;
 
-@javax.annotation.Generated(value = "class io.swagger.codegen.languages.JavaClientCodegen", date = "2015-11-21T20:11:09.490+08:00")
+@javax.annotation.Generated(value = "class io.swagger.codegen.languages.JavaClientCodegen", date = "2015-11-25T15:16:28.364+08:00")
 public class StringUtil {
   /**
    * Check if the given array contains the given value (with case-insensitive comparison).
diff --git a/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/auth/ApiKeyAuth.java b/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/auth/ApiKeyAuth.java
index 258cfea3f7a7..5f85066b2a99 100644
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/auth/ApiKeyAuth.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/auth/ApiKeyAuth.java
@@ -5,7 +5,7 @@ import io.swagger.client.Pair;
 import java.util.Map;
 import java.util.List;
 
-@javax.annotation.Generated(value = "class io.swagger.codegen.languages.JavaClientCodegen", date = "2015-11-21T20:11:09.490+08:00")
+@javax.annotation.Generated(value = "class io.swagger.codegen.languages.JavaClientCodegen", date = "2015-11-25T15:16:28.364+08:00")
 public class ApiKeyAuth implements Authentication {
   private final String location;
   private final String paramName;
diff --git a/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/auth/Authentication.java b/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/auth/Authentication.java
index fccf3057d4b8..f9cc5d1cdd73 100644
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/auth/Authentication.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/auth/Authentication.java
@@ -5,7 +5,7 @@ import io.swagger.client.Pair;
 import java.util.Map;
 import java.util.List;
 
-@javax.annotation.Generated(value = "class io.swagger.codegen.languages.JavaClientCodegen", date = "2015-11-21T20:11:09.490+08:00")
+@javax.annotation.Generated(value = "class io.swagger.codegen.languages.JavaClientCodegen", date = "2015-11-25T15:16:28.364+08:00")
 public interface Authentication {
   /** Apply authentication settings to header and query params. */
   void applyToParams(List<Pair> queryParams, Map<String, String> headerParams);
diff --git a/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/auth/OAuth.java b/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/auth/OAuth.java
index dc224c2e050a..dd1946c02009 100644
--- a/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/auth/OAuth.java
+++ b/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/auth/OAuth.java
@@ -5,7 +5,7 @@ import io.swagger.client.Pair;
 import java.util.Map;
 import java.util.List;
 
-@javax.annotation.Generated(value = "class io.swagger.codegen.languages.JavaClientCodegen", date = "2015-11-21T20:11:09.490+08:00")
+@javax.annotation.Generated(value = "class io.swagger.codegen.languages.JavaClientCodegen", date = "2015-11-25T15:16:28.364+08:00")
 public class OAuth implements Authentication {
   private String accessToken;