change generated keys to prepared statement constant

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/dao/impl/ApplicationDAOImpl.java

@@ -86,7 +86,7 @@ public class ApplicationDAOImpl implements ApplicationDAO {
             conn = this.getConnection();
             stmt = conn.prepareStatement("INSERT INTO DM_APPLICATION (NAME, PLATFORM, CATEGORY, " +
                     "VERSION, TYPE, LOCATION_URL, IMAGE_URL, TENANT_ID,APP_PROPERTIES,APP_IDENTIFIER) " +
-                    "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?,?)", Statement.RETURN_GENERATED_KEYS);
+                    "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?,?)", PreparedStatement.RETURN_GENERATED_KEYS);
 
 
             for (Application application : applications) {

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/operation/mgt/PolicyOperation.java

@@ -17,10 +17,7 @@
  */
 package org.wso2.carbon.device.mgt.core.operation.mgt;
 
-
-
 import org.wso2.carbon.device.mgt.common.operation.mgt.Operation;
-
 import java.util.List;
 
 public class PolicyOperation extends Operation {