Fix some Sonar issues in common util directory

This patch fixes some Sonar issues in common/util directory.

Change-Id: I76ae980a3abb1d8a16d0197654cd9d759b13d597
Issue-Id: VFC-331
Signed-off-by: Shashank Kumar Shankar <shashank.kumar.shankar@intel.com>

6 files changed, 23 insertions, 29 deletions

diff --git a/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/JsonUtil.java b/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/JsonUtil.java
index f6bf1ac..a033cbe 100644
--- a/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/JsonUtil.java
+++ b/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/JsonUtil.java
@@ -128,7 +128,7 @@ public final class JsonUtil {
     private static Object getJsonFieldObject(JSONObject jsonObj, String fieldName, int classType) {
         try {
             if(null != jsonObj && jsonObj.has(fieldName)) {
-                Object result = new Object();
+                Object result;
                 switch(classType) {
                     case TYPE_STRING:
                         result = "null".equals(jsonObj.getString(fieldName)) ? "" : jsonObj.getString(fieldName);
@@ -244,7 +244,7 @@ public final class JsonUtil {
      * @return
      * @since  VFC 1.0
      */
-    public static String getStrValueByJson(JSONObject json, String parentKey, String key) {
+    public static String getStrValueByParentJson(JSONObject json, String parentKey, String key) {
         if(parentKey.isEmpty()) {
             return getStrValueByjson(json, key);
         }
diff --git a/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/RestfulUtil.java b/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/RestfulUtil.java
index aa7c948..d783ea8 100644
--- a/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/RestfulUtil.java
+++ b/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/RestfulUtil.java
@@ -63,6 +63,9 @@ public class RestfulUtil {
 
     public static final String APPLICATION = "application/json";
 
+    public static final String NO_RESULT_EXCEPTION =
+            "org.openo.nfvo.resmanage.service.group.resoperate.add.res.no.result";
+
     private static final Logger LOGGER = LoggerFactory.getLogger(RestfulUtil.class);
 
     private static final Restful REST_CLIENT = RestfulFactory.getRestInstance(RestfulFactory.PROTO_HTTP);
@@ -277,7 +280,7 @@ public class RestfulUtil {
         if(null == result || result.isEmpty()) {
             LOGGER.error("result from  url:" + url + " result:" + result);
             throw new ServiceException(
-                    ResourceUtil.getMessage("org.openo.nfvo.resmanage.service.group.resoperate.add.res.no.result"));
+                    ResourceUtil.getMessage(NO_RESULT_EXCEPTION));
         }
 
         JSONArray rsArray = null;
@@ -287,7 +290,7 @@ public class RestfulUtil {
         } catch(JSONException e) {
             LOGGER.error("getResources error:" + e);
             throw new ServiceException(
-                    ResourceUtil.getMessage("org.openo.nfvo.resmanage.service.group.resoperate.add.res.no.result"));
+                    ResourceUtil.getMessage(NO_RESULT_EXCEPTION));
         }
         return rsArray;
     }
@@ -308,7 +311,7 @@ public class RestfulUtil {
         if(null == result || result.isEmpty()) {
             LOGGER.error("result from  url:" + url + " result:" + result);
             throw new ServiceException(
-                    ResourceUtil.getMessage("org.openo.nfvo.resmanage.service.group.resoperate.add.res.no.result"));
+                    ResourceUtil.getMessage(NO_RESULT_EXCEPTION));
         }
 
         JSONArray rsArray = null;
@@ -325,7 +328,7 @@ public class RestfulUtil {
         } catch(JSONException e) {
             LOGGER.error("getResources error:" + e);
             throw new ServiceException(
-                    ResourceUtil.getMessage("org.openo.nfvo.resmanage.service.group.resoperate.add.res.no.result"));
+                    ResourceUtil.getMessage(NO_RESULT_EXCEPTION));
         }
         return rsArray;
     }
diff --git a/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/StringUtil.java b/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/StringUtil.java
index c932669..d5da530 100644
--- a/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/StringUtil.java
+++ b/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/StringUtil.java
@@ -83,11 +83,8 @@ public final class StringUtil {
     public static boolean isInteger(String... strs) {
         try {
             for(String str : strs) {
-                if(!StringUtils.isEmpty(str)) {
-                    int value = Integer.parseInt(str);
-                    if(value < 0) {
-                        return false;
-                    }
+                if(!StringUtils.isEmpty(str) && Integer.parseInt(str) < 0) {
+                    return false;
                 }
             }
         } catch(NumberFormatException e) {
@@ -107,11 +104,8 @@ public final class StringUtil {
     public static boolean isNumeric(String... strs) {
         try {
             for(String str : strs) {
-                if(!StringUtils.isEmpty(str)) {
-                    float value = Float.parseFloat(str);
-                    if(value < 0) {
-                        return false;
-                    }
+                if(!StringUtils.isEmpty(str) && Float.parseFloat(str) < 0) {
+                    return false;
                 }
             }
         } catch(NumberFormatException e) {
@@ -161,9 +155,9 @@ public final class StringUtil {
      * @since  VFC 1.0
      */
     public static boolean compareZeroByInteger(String tatol, String used, String drTotal) {
-        Integer ftotal = (int)0;
-        Integer fused = (int)0;
-        Integer fdrTotal = (int)0;
+        Integer ftotal = 0;
+        Integer fused = 0;
+        Integer fdrTotal = 0;
         if(!StringUtils.isEmpty(tatol)) {
             ftotal = Integer.valueOf(tatol);
         }
diff --git a/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/request/RequestUtil.java b/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/request/RequestUtil.java
index e7f194d..ed0c675 100644
--- a/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/request/RequestUtil.java
+++ b/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/request/RequestUtil.java
@@ -117,7 +117,7 @@ public final class RequestUtil {
      */
     @SuppressWarnings("unchecked")
     private static Map<String, String> getContextHeader(HttpServletRequest context) {
-        Map<String, String> header = new HashMap<String, String>();
+        Map<String, String> header = new HashMap<>();
         Enumeration<String> headerNames = context.getHeaderNames();
         while(headerNames.hasMoreElements()) {
             String headerName = headerNames.nextElement();
diff --git a/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/response/ResponseUtil.java b/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/response/ResponseUtil.java
index 33f5325..13eb979 100644
--- a/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/response/ResponseUtil.java
+++ b/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/response/ResponseUtil.java
@@ -50,7 +50,7 @@ public final class ResponseUtil {
      * @since VFC 1.0
      */
     public static JSONObject genHttpResponse(int retCode, String msg) {
-        return genHttpResponse(null, createCodeMap(-1, retCode), msg, null);
+        return genHttpResponse(createCodeMap(-1, retCode), msg, null);
     }
 
     /**
@@ -66,14 +66,12 @@ public final class ResponseUtil {
      * @since VFC 1.0
      */
     public static JSONObject genHttpResponse(int retCode, String msg, Map<String, Object> map) {
-        return genHttpResponse(null, createCodeMap(-1, retCode), msg, map);
+        return genHttpResponse(createCodeMap(-1, retCode), msg, map);
     }
 
     /**
      * Roa request common return method <br/>
      *
-     * @param context
-     *         The http request context
      * @param httpStatusCode
      *         The http response code
      * @param retCode
@@ -83,22 +81,21 @@ public final class ResponseUtil {
      * @return JSONObject The response for http request
      * @since VFC 1.0
      */
-    public static JSONObject genHttpResponse(HttpServletRequest context, int httpStatusCode, int retCode, String msg) {
-        return genHttpResponse(context, createCodeMap(httpStatusCode, retCode), msg, null);
+    public static JSONObject genHttpResponse(int httpStatusCode, int retCode, String msg) {
+        return genHttpResponse(createCodeMap(httpStatusCode, retCode), msg, null);
     }
 
     /**
      *
      * Roa request common return method.<br>
      *
-     * @param context, The http request context
      * @param codeMap
      * @param msg, The message of request
      * @param map, Other message of request
      * @return
      * @since  VFC 1.0
      */
-    public static JSONObject genHttpResponse(HttpServletRequest context, Map<String, Integer> codeMap, String msg,
+    public static JSONObject genHttpResponse(Map<String, Integer> codeMap, String msg,
             Map<String, Object> map) {
         JSONObject object = new JSONObject();
 
diff --git a/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/response/RoaResponseUtil.java b/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/response/RoaResponseUtil.java
index fcb94a6..fb00a2a 100644
--- a/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/response/RoaResponseUtil.java
+++ b/ResmanagementService/service/src/main/java/org/onap/vfc/nfvo/resmanagement/common/util/response/RoaResponseUtil.java
@@ -54,7 +54,7 @@ public final class RoaResponseUtil {
      * @since VFC 1.0
      */
     public static <T> JSONObject get(List<T> list) {
-        Map<String, Object> map = new HashMap<String, Object>(10);
+        Map<String, Object> map = new HashMap<>(10);
         map.put(ParamConstant.PARAM_DATA, list);
         LOGGER.info("function=get; msg=get map:{}", map.toString());
         return ResponseUtil.genHttpResponse(HttpConstant.OK_CODE, ResponseConstant.QUERY_SUCESS_MSG, map);