Fix sonars in policy models

Fixed:
- a few other "var" cases
- use re2j instead of java.util.regex
- use correct class for constants
- remove unused constants

Issue-ID: POLICY-3094
Change-Id: Ifcb2b0623e8df0527f0a279e666d062422978ded
Signed-off-by: Jim Hahn <jrh3@att.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/models-errors/src/main/java/org/onap/policy/models/errors/concepts/ErrorResponseUtils.java b/models-errors/src/main/java/org/onap/policy/models/errors/concepts/ErrorResponseUtils.java
index 67815a811..eb5212eb0 100644
--- a/models-errors/src/main/java/org/onap/policy/models/errors/concepts/ErrorResponseUtils.java
+++ b/models-errors/src/main/java/org/onap/policy/models/errors/concepts/ErrorResponseUtils.java
@@ -1,6 +1,7 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2019 Nordix Foundation.
+ *  Modifications Copyright (C) 2021 AT&T Intellectual Property. All rights reserved.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -46,7 +47,7 @@ public final class ErrorResponseUtils {
 
         List<String> cascascadedErrorMessages = new ArrayList<>();
 
-        for (Throwable t = throwable; t != null; t = t.getCause()) {
+        for (var t = throwable; t != null; t = t.getCause()) {
             cascascadedErrorMessages.add(t.getMessage());
         }