diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.api/src/main/java/org/wso2/carbon/device/mgt/jaxrs/service/impl/UserManagementServiceImpl.java b/components/device-mgt/org.wso2.carbon.device.mgt.api/src/main/java/org/wso2/carbon/device/mgt/jaxrs/service/impl/UserManagementServiceImpl.java
index 165c1da85fb..25794c833b0 100644
--- a/components/device-mgt/org.wso2.carbon.device.mgt.api/src/main/java/org/wso2/carbon/device/mgt/jaxrs/service/impl/UserManagementServiceImpl.java
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.api/src/main/java/org/wso2/carbon/device/mgt/jaxrs/service/impl/UserManagementServiceImpl.java
@@ -28,7 +28,14 @@ import org.wso2.carbon.device.mgt.common.configuration.mgt.ConfigurationManageme
 import org.wso2.carbon.device.mgt.core.DeviceManagementConstants;
 import org.wso2.carbon.device.mgt.core.service.DeviceManagementProviderService;
 import org.wso2.carbon.device.mgt.core.service.EmailMetaInfo;
-import org.wso2.carbon.device.mgt.jaxrs.beans.*;
+import org.wso2.carbon.device.mgt.jaxrs.beans.BasicUserInfo;
+import org.wso2.carbon.device.mgt.jaxrs.beans.BasicUserInfoList;
+import org.wso2.carbon.device.mgt.jaxrs.beans.BasicUserInfoWrapper;
+import org.wso2.carbon.device.mgt.jaxrs.beans.EnrollmentInvitation;
+import org.wso2.carbon.device.mgt.jaxrs.beans.ErrorResponse;
+import org.wso2.carbon.device.mgt.jaxrs.beans.OldPasswordResetWrapper;
+import org.wso2.carbon.device.mgt.jaxrs.beans.RoleList;
+import org.wso2.carbon.device.mgt.jaxrs.beans.UserInfo;
 import org.wso2.carbon.device.mgt.jaxrs.service.api.UserManagementService;
 import org.wso2.carbon.device.mgt.jaxrs.service.impl.util.RequestValidationUtil;
 import org.wso2.carbon.device.mgt.jaxrs.util.Constants;
@@ -42,7 +49,16 @@ import org.wso2.carbon.user.api.UserStoreException;
 import org.wso2.carbon.user.api.UserStoreManager;
 import org.wso2.carbon.utils.CarbonUtils;
 
-import javax.ws.rs.*;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.HeaderParam;
+import javax.ws.rs.POST;
+import javax.ws.rs.PUT;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.QueryParam;
 import javax.ws.rs.core.MediaType;
 import javax.ws.rs.core.Response;
 import java.io.File;
@@ -50,7 +66,14 @@ import java.io.UnsupportedEncodingException;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.security.SecureRandom;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+import java.util.Set;
 
 @Path("/users")
 @Produces(MediaType.APPLICATION_JSON)
diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.api/src/test/java/org/wso2/carbon/device/mgt/jaxrs/service/impl/UserManagementServiceImplTest.java b/components/device-mgt/org.wso2.carbon.device.mgt.api/src/test/java/org/wso2/carbon/device/mgt/jaxrs/service/impl/UserManagementServiceImplTest.java
index 6d47f8ef9bd..bcee738b6e2 100644
--- a/components/device-mgt/org.wso2.carbon.device.mgt.api/src/test/java/org/wso2/carbon/device/mgt/jaxrs/service/impl/UserManagementServiceImplTest.java
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.api/src/test/java/org/wso2/carbon/device/mgt/jaxrs/service/impl/UserManagementServiceImplTest.java
@@ -221,9 +221,9 @@ public class UserManagementServiceImplTest {
     public void testGetUserNames() throws UserStoreException {
         PowerMockito.stub(PowerMockito.method(DeviceMgtAPIUtils.class, "getUserStoreManager"))
                 .toReturn(this.userStoreManager);
-        Mockito.doReturn(new String[] { TEST_USERNAME }).when(userStoreManager).listUsers(Mockito.anyString(), Mockito.anyInt());
-        Response response = userManagementService
-                .getUserNames(TEST_USERNAME, null, "00", 0, 0);
+        Mockito.doReturn(new String[] { TEST_USERNAME }).when(userStoreManager)
+                .listUsers(Mockito.anyString(), Mockito.anyInt());
+        Response response = userManagementService.getUserNames(TEST_USERNAME, null, "00", 0, 0);
         Assert.assertEquals(response.getStatus(), Response.Status.OK.getStatusCode(),
                 "Getting user names is failed for a valid request");
 
diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/service/DeviceManagementProviderServiceImpl.java b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/service/DeviceManagementProviderServiceImpl.java
index 9682f26664a..9ee72d040a6 100644
--- a/components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/service/DeviceManagementProviderServiceImpl.java
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/service/DeviceManagementProviderServiceImpl.java
@@ -60,7 +60,12 @@ import org.wso2.carbon.device.mgt.common.spi.DeviceManagementService;
 import org.wso2.carbon.device.mgt.core.DeviceManagementConstants;
 import org.wso2.carbon.device.mgt.core.DeviceManagementPluginRepository;
 import org.wso2.carbon.device.mgt.core.cache.impl.DeviceCacheManagerImpl;
-import org.wso2.carbon.device.mgt.core.dao.*;
+import org.wso2.carbon.device.mgt.core.dao.ApplicationDAO;
+import org.wso2.carbon.device.mgt.core.dao.DeviceDAO;
+import org.wso2.carbon.device.mgt.core.dao.DeviceManagementDAOException;
+import org.wso2.carbon.device.mgt.core.dao.DeviceManagementDAOFactory;
+import org.wso2.carbon.device.mgt.core.dao.DeviceTypeDAO;
+import org.wso2.carbon.device.mgt.core.dao.EnrollmentDAO;
 import org.wso2.carbon.device.mgt.core.device.details.mgt.dao.DeviceDetailsDAO;
 import org.wso2.carbon.device.mgt.core.device.details.mgt.dao.DeviceDetailsMgtDAOException;
 import org.wso2.carbon.device.mgt.core.dto.DeviceType;