Added missed licence for some .java files
diff --git a/services/datalab-webapp-common/src/main/java/com/epam/datalab/properties/ChangePropertiesConst.java b/services/datalab-webapp-common/src/main/java/com/epam/datalab/properties/ChangePropertiesConst.java
index 42c96ea..0717463 100644
--- a/services/datalab-webapp-common/src/main/java/com/epam/datalab/properties/ChangePropertiesConst.java
+++ b/services/datalab-webapp-common/src/main/java/com/epam/datalab/properties/ChangePropertiesConst.java
@@ -1,3 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 com.epam.datalab.properties;
 
 public interface ChangePropertiesConst {
diff --git a/services/datalab-webapp-common/src/main/java/com/epam/datalab/properties/ChangePropertiesService.java b/services/datalab-webapp-common/src/main/java/com/epam/datalab/properties/ChangePropertiesService.java
index 7244137..36d9cf9 100644
--- a/services/datalab-webapp-common/src/main/java/com/epam/datalab/properties/ChangePropertiesService.java
+++ b/services/datalab-webapp-common/src/main/java/com/epam/datalab/properties/ChangePropertiesService.java
@@ -1,3 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 com.epam.datalab.properties;
 
 import com.epam.datalab.exceptions.DynamicChangePropertiesException;
diff --git a/services/datalab-webapp-common/src/main/java/com/epam/datalab/properties/ExternalChangeProperties.java b/services/datalab-webapp-common/src/main/java/com/epam/datalab/properties/ExternalChangeProperties.java
index 8e7fcf3..d6c80f5 100644
--- a/services/datalab-webapp-common/src/main/java/com/epam/datalab/properties/ExternalChangeProperties.java
+++ b/services/datalab-webapp-common/src/main/java/com/epam/datalab/properties/ExternalChangeProperties.java
@@ -1,3 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 com.epam.datalab.properties;
 
 import com.epam.datalab.auth.UserInfo;
diff --git a/services/datalab-webapp-common/src/main/java/com/epam/datalab/properties/RestartForm.java b/services/datalab-webapp-common/src/main/java/com/epam/datalab/properties/RestartForm.java
index c399fb5..7ee69eb 100644
--- a/services/datalab-webapp-common/src/main/java/com/epam/datalab/properties/RestartForm.java
+++ b/services/datalab-webapp-common/src/main/java/com/epam/datalab/properties/RestartForm.java
@@ -1,3 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 com.epam.datalab.properties;
 
 import lombok.Data;
diff --git a/services/datalab-webapp-common/src/main/java/com/epam/datalab/properties/YmlDTO.java b/services/datalab-webapp-common/src/main/java/com/epam/datalab/properties/YmlDTO.java
index 5fdd64e..aa2558a 100644
--- a/services/datalab-webapp-common/src/main/java/com/epam/datalab/properties/YmlDTO.java
+++ b/services/datalab-webapp-common/src/main/java/com/epam/datalab/properties/YmlDTO.java
@@ -1,3 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 com.epam.datalab.properties;
 
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
diff --git a/services/datalab-webapp-common/src/main/java/com/epam/datalab/rest/mappers/DynamicChangePropertiesExceptionMapper.java b/services/datalab-webapp-common/src/main/java/com/epam/datalab/rest/mappers/DynamicChangePropertiesExceptionMapper.java
index 6408b16..d0687e6 100644
--- a/services/datalab-webapp-common/src/main/java/com/epam/datalab/rest/mappers/DynamicChangePropertiesExceptionMapper.java
+++ b/services/datalab-webapp-common/src/main/java/com/epam/datalab/rest/mappers/DynamicChangePropertiesExceptionMapper.java
@@ -1,3 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 com.epam.datalab.rest.mappers;
 
 import com.epam.datalab.exceptions.DynamicChangePropertiesException;
diff --git a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/ProvisioningServiceApplication.java b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/ProvisioningServiceApplication.java
index bb711a2..b147fd1 100644
--- a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/ProvisioningServiceApplication.java
+++ b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/ProvisioningServiceApplication.java
@@ -17,7 +17,6 @@
  * under the License.
  */
 
-
 package com.epam.datalab.backendapi;
 
 import com.epam.datalab.auth.UserInfo;
diff --git a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/DockerWarmuper.java b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/DockerWarmuper.java
index 3ed6399..a5f70cc 100644
--- a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/DockerWarmuper.java
+++ b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/DockerWarmuper.java
@@ -48,7 +48,6 @@
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.stream.Collectors;
 
-
 @Singleton
 public class DockerWarmuper implements Managed, DockerCommands, MetadataHolder {
     private static final Logger LOGGER = LoggerFactory.getLogger(DockerWarmuper.class);
diff --git a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/MetadataHolder.java b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/MetadataHolder.java
index 3800313..c5a5cea 100644
--- a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/MetadataHolder.java
+++ b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/MetadataHolder.java
@@ -19,7 +19,6 @@
 
 package com.epam.datalab.backendapi.core;
 
-
 import com.epam.datalab.dto.imagemetadata.ImageMetadataDTO;
 import com.epam.datalab.dto.imagemetadata.ImageType;
 
diff --git a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/commands/DockerCommands.java b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/commands/DockerCommands.java
index e8f03d1..cf26294 100644
--- a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/commands/DockerCommands.java
+++ b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/commands/DockerCommands.java
@@ -17,7 +17,6 @@
  * under the License.
  */
 
-
 package com.epam.datalab.backendapi.core.commands;
 
 import com.fasterxml.jackson.core.JsonParser;
diff --git a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/commands/ICommandExecutor.java b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/commands/ICommandExecutor.java
index da1082e..3054492 100644
--- a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/commands/ICommandExecutor.java
+++ b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/commands/ICommandExecutor.java
@@ -16,6 +16,7 @@
  * specific language governing permissions and limitations
  * under the License.
  */
+
 package com.epam.datalab.backendapi.core.commands;
 
 import com.epam.datalab.process.model.ProcessInfo;
diff --git a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/folderlistener/AsyncFileHandler.java b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/folderlistener/AsyncFileHandler.java
index d29b451..e2fe9c2 100644
--- a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/folderlistener/AsyncFileHandler.java
+++ b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/folderlistener/AsyncFileHandler.java
@@ -17,7 +17,6 @@
  * under the License.
  */
 
-
 package com.epam.datalab.backendapi.core.response.folderlistener;
 
 import com.epam.datalab.backendapi.core.FileHandlerCallback;
diff --git a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/folderlistener/FolderListener.java b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/folderlistener/FolderListener.java
index f82f9cf..b936dcd 100644
--- a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/folderlistener/FolderListener.java
+++ b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/folderlistener/FolderListener.java
@@ -17,7 +17,6 @@
  * under the License.
  */
 
-
 package com.epam.datalab.backendapi.core.response.folderlistener;
 
 import com.epam.datalab.backendapi.core.FileHandlerCallback;
diff --git a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/folderlistener/WatchItem.java b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/folderlistener/WatchItem.java
index 5b345f1..55ffa05 100644
--- a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/folderlistener/WatchItem.java
+++ b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/folderlistener/WatchItem.java
@@ -17,7 +17,6 @@
  * under the License.
  */
 
-
 package com.epam.datalab.backendapi.core.response.folderlistener;
 
 import com.epam.datalab.backendapi.core.FileHandlerCallback;
diff --git a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/folderlistener/WatchItemList.java b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/folderlistener/WatchItemList.java
index 36e168c..76418ae 100644
--- a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/folderlistener/WatchItemList.java
+++ b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/folderlistener/WatchItemList.java
@@ -17,7 +17,6 @@
  * under the License.
  */
 
-
 package com.epam.datalab.backendapi.core.response.folderlistener;
 
 import com.epam.datalab.backendapi.core.FileHandlerCallback;
diff --git a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/handlers/CheckInactivityCallbackHandler.java b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/handlers/CheckInactivityCallbackHandler.java
index 8358835..c2c9820 100644
--- a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/handlers/CheckInactivityCallbackHandler.java
+++ b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/handlers/CheckInactivityCallbackHandler.java
@@ -16,6 +16,7 @@
  * specific language governing permissions and limitations
  * under the License.
  */
+
 package com.epam.datalab.backendapi.core.response.handlers;
 
 import com.epam.datalab.backendapi.core.FileHandlerCallback;
diff --git a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/handlers/ResourcesStatusCallbackHandler.java b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/handlers/ResourcesStatusCallbackHandler.java
index 13137a1..bc0a34c 100644
--- a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/handlers/ResourcesStatusCallbackHandler.java
+++ b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/handlers/ResourcesStatusCallbackHandler.java
@@ -17,7 +17,6 @@
  * under the License.
  */
 
-
 package com.epam.datalab.backendapi.core.response.handlers;
 
 import com.epam.datalab.backendapi.core.commands.DockerAction;
diff --git a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/handlers/ReuploadKeyCallbackHandler.java b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/handlers/ReuploadKeyCallbackHandler.java
index ceb67a1..1840052 100644
--- a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/handlers/ReuploadKeyCallbackHandler.java
+++ b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/core/response/handlers/ReuploadKeyCallbackHandler.java
@@ -16,6 +16,7 @@
  * specific language governing permissions and limitations
  * under the License.
  */
+
 package com.epam.datalab.backendapi.core.response.handlers;
 
 import com.epam.datalab.backendapi.core.FileHandlerCallback;
diff --git a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/resources/ChangePropertiesResource.java b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/resources/ChangePropertiesResource.java
index 2b8306d..2d9a1fc 100644
--- a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/resources/ChangePropertiesResource.java
+++ b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/resources/ChangePropertiesResource.java
@@ -1,3 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 com.epam.datalab.backendapi.resources;
 
 import com.epam.datalab.auth.UserInfo;
diff --git a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/resources/ProvisioningHealthCheckResource.java b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/resources/ProvisioningHealthCheckResource.java
index a252699..0693c09 100644
--- a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/resources/ProvisioningHealthCheckResource.java
+++ b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/resources/ProvisioningHealthCheckResource.java
@@ -19,7 +19,6 @@
 
 package com.epam.datalab.backendapi.resources;
 
-
 import com.epam.datalab.auth.UserInfo;
 import com.epam.datalab.backendapi.ProvisioningServiceApplicationConfiguration;
 import com.google.inject.Inject;
diff --git a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/resources/base/InfrastructureService.java b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/resources/base/InfrastructureService.java
index 4379f1d..9087c79 100644
--- a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/resources/base/InfrastructureService.java
+++ b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/resources/base/InfrastructureService.java
@@ -19,7 +19,6 @@
 
 package com.epam.datalab.backendapi.resources.base;
 
-
 import com.epam.datalab.backendapi.ProvisioningServiceApplicationConfiguration;
 import com.epam.datalab.backendapi.core.Directories;
 import com.epam.datalab.backendapi.core.FileHandlerCallback;
diff --git a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/resources/base/KeyResource.java b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/resources/base/KeyResource.java
index 6e6c003..96404e0 100644
--- a/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/resources/base/KeyResource.java
+++ b/services/provisioning-service/src/main/java/com/epam/datalab/backendapi/resources/base/KeyResource.java
@@ -17,7 +17,6 @@
  * under the License.
  */
 
-
 package com.epam.datalab.backendapi.resources.base;
 
 import com.epam.datalab.auth.UserInfo;
diff --git a/services/provisioning-service/src/main/java/com/epam/datalab/process/builder/ProcessInfoBuilder.java b/services/provisioning-service/src/main/java/com/epam/datalab/process/builder/ProcessInfoBuilder.java
index cfa285f..fb27f5b 100644
--- a/services/provisioning-service/src/main/java/com/epam/datalab/process/builder/ProcessInfoBuilder.java
+++ b/services/provisioning-service/src/main/java/com/epam/datalab/process/builder/ProcessInfoBuilder.java
@@ -16,6 +16,7 @@
  * specific language governing permissions and limitations
  * under the License.
  */
+
 package com.epam.datalab.process.builder;
 
 import com.aegisql.conveyor.Expireable;
diff --git a/services/provisioning-service/src/main/java/com/epam/datalab/process/exception/DatalabProcessException.java b/services/provisioning-service/src/main/java/com/epam/datalab/process/exception/DatalabProcessException.java
index 05a5ede..572e976 100644
--- a/services/provisioning-service/src/main/java/com/epam/datalab/process/exception/DatalabProcessException.java
+++ b/services/provisioning-service/src/main/java/com/epam/datalab/process/exception/DatalabProcessException.java
@@ -16,6 +16,7 @@
  * specific language governing permissions and limitations
  * under the License.
  */
+
 package com.epam.datalab.process.exception;
 
 public class DatalabProcessException extends RuntimeException {
diff --git a/services/provisioning-service/src/main/java/com/epam/datalab/process/model/ProcessId.java b/services/provisioning-service/src/main/java/com/epam/datalab/process/model/ProcessId.java
index 4b33cd0..2aaf90d 100644
--- a/services/provisioning-service/src/main/java/com/epam/datalab/process/model/ProcessId.java
+++ b/services/provisioning-service/src/main/java/com/epam/datalab/process/model/ProcessId.java
@@ -16,6 +16,7 @@
  * specific language governing permissions and limitations
  * under the License.
  */
+
 package com.epam.datalab.process.model;
 
 public class ProcessId {
diff --git a/services/provisioning-service/src/main/java/com/epam/datalab/process/model/ProcessInfo.java b/services/provisioning-service/src/main/java/com/epam/datalab/process/model/ProcessInfo.java
index 1f812e8..624ed8e 100644
--- a/services/provisioning-service/src/main/java/com/epam/datalab/process/model/ProcessInfo.java
+++ b/services/provisioning-service/src/main/java/com/epam/datalab/process/model/ProcessInfo.java
@@ -16,6 +16,7 @@
  * specific language governing permissions and limitations
  * under the License.
  */
+
 package com.epam.datalab.process.model;
 
 import java.util.ArrayList;
diff --git a/services/self-service/src/main/java/com/epam/datalab/backendapi/dao/BillingDAO.java b/services/self-service/src/main/java/com/epam/datalab/backendapi/dao/BillingDAO.java
index a49ed7b..169e9e8 100644
--- a/services/self-service/src/main/java/com/epam/datalab/backendapi/dao/BillingDAO.java
+++ b/services/self-service/src/main/java/com/epam/datalab/backendapi/dao/BillingDAO.java
@@ -16,6 +16,7 @@
  * specific language governing permissions and limitations
  * under the License.
  */
+
 package com.epam.datalab.backendapi.dao;
 
 import com.epam.datalab.backendapi.domain.BillingReportLine;
diff --git a/services/self-service/src/main/java/com/epam/datalab/backendapi/dao/ComputationalDAO.java b/services/self-service/src/main/java/com/epam/datalab/backendapi/dao/ComputationalDAO.java
index ef0203c..95216b6 100644
--- a/services/self-service/src/main/java/com/epam/datalab/backendapi/dao/ComputationalDAO.java
+++ b/services/self-service/src/main/java/com/epam/datalab/backendapi/dao/ComputationalDAO.java
@@ -19,7 +19,6 @@
 
 package com.epam.datalab.backendapi.dao;
 
-
 import com.epam.datalab.backendapi.util.DateRemoverUtil;
 import com.epam.datalab.dto.ResourceURL;
 import com.epam.datalab.dto.SchedulerJobDTO;
diff --git a/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/ChangePropertiesResource.java b/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/ChangePropertiesResource.java
index bc03f15..5348718 100644
--- a/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/ChangePropertiesResource.java
+++ b/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/ChangePropertiesResource.java
@@ -1,3 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 com.epam.datalab.backendapi.resources;
 
 import com.epam.datalab.properties.ChangePropertiesConst;
diff --git a/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/ExploratoryResource.java b/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/ExploratoryResource.java
index f9896b7..d56148e 100644
--- a/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/ExploratoryResource.java
+++ b/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/ExploratoryResource.java
@@ -56,7 +56,7 @@
 @Slf4j
 public class ExploratoryResource implements ExploratoryAPI {
 
-    private ExploratoryService exploratoryService;
+    private final ExploratoryService exploratoryService;
 
     @Inject
     public ExploratoryResource(ExploratoryService exploratoryService) {
diff --git a/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/SchedulerJobResource.java b/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/SchedulerJobResource.java
index d2e3e4c..0ecf157 100644
--- a/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/SchedulerJobResource.java
+++ b/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/SchedulerJobResource.java
@@ -46,7 +46,7 @@
 @Slf4j
 public class SchedulerJobResource {
 
-    private SchedulerJobService schedulerJobService;
+    private final SchedulerJobService schedulerJobService;
 
     @Inject
     public SchedulerJobResource(SchedulerJobService schedulerJobService) {
diff --git a/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/SystemInfoResource.java b/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/SystemInfoResource.java
index c8ac3e3..0c20dcb 100644
--- a/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/SystemInfoResource.java
+++ b/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/SystemInfoResource.java
@@ -38,7 +38,7 @@
 @RolesAllowed("sysinfo")
 public class SystemInfoResource {
 
-    private SystemInfoService systemInfoService;
+    private final SystemInfoService systemInfoService;
 
     @Inject
     public SystemInfoResource(SystemInfoService systemInfoService) {
diff --git a/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/UserSettingsResource.java b/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/UserSettingsResource.java
index feb7249..f74fd4e 100644
--- a/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/UserSettingsResource.java
+++ b/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/UserSettingsResource.java
@@ -48,7 +48,7 @@
 public class UserSettingsResource {
     private static final Logger LOGGER = LoggerFactory.getLogger(UserSettingsResource.class);
 
-    private UserSettingService userSettingService;
+    private final UserSettingService userSettingService;
 
     @Inject
     public UserSettingsResource(UserSettingService userSettingService) {
diff --git a/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/aws/ComputationalResourceAws.java b/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/aws/ComputationalResourceAws.java
index 7d98260..3725984 100644
--- a/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/aws/ComputationalResourceAws.java
+++ b/services/self-service/src/main/java/com/epam/datalab/backendapi/resources/aws/ComputationalResourceAws.java
@@ -17,7 +17,6 @@
  * under the License.
  */
 
-
 package com.epam.datalab.backendapi.resources.aws;
 
 import com.epam.datalab.auth.UserInfo;