Clean up minor things in policy-models

Cleam up of some minor eclipse, checkstyle, and Sonar issues in
policy-models

Issue-ID: POLICY-2165
Change-Id: Id5682fd60e1a6cebbf716d9c258453aa53ca2482
Signed-off-by: liamfallon <liam.fallon@est.tech>

1 files changed, 6 insertions, 4 deletions

diff --git a/models-interactions/model-impl/rest/src/main/java/org/onap/policy/rest/RestManager.java b/models-interactions/model-impl/rest/src/main/java/org/onap/policy/rest/RestManager.java
index 2ee47a9fc..643c629b3 100644
--- a/models-interactions/model-impl/rest/src/main/java/org/onap/policy/rest/RestManager.java
+++ b/models-interactions/model-impl/rest/src/main/java/org/onap/policy/rest/RestManager.java
@@ -41,9 +41,11 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 public class RestManager {
-
     private static final Logger logger = LoggerFactory.getLogger(RestManager.class);
 
+    // Constants for string literals
+    private static final String CONTENT_TYPE = "Content-Type";
+
     public class Pair<A, B> {
         public final A first;
         public final B second;
@@ -69,7 +71,7 @@ public class RestManager {
                                       Map<String, String> headers, String contentType, String body) {
         HttpPut put = new HttpPut(url);
         addHeaders(put, username, password, headers);
-        put.addHeader("Content-Type", contentType);
+        put.addHeader(CONTENT_TYPE, contentType);
         try {
             StringEntity input = new StringEntity(body);
             input.setContentType(contentType);
@@ -96,7 +98,7 @@ public class RestManager {
                                       Map<String, String> headers, String contentType, String body) {
         HttpPost post = new HttpPost(url);
         addHeaders(post, username, password, headers);
-        post.addHeader("Content-Type", contentType);
+        post.addHeader(CONTENT_TYPE, contentType);
         try {
             StringEntity input = new StringEntity(body);
             input.setContentType(contentType);
@@ -141,7 +143,7 @@ public class RestManager {
         HttpDeleteWithBody delete = new HttpDeleteWithBody(url);
         addHeaders(delete, username, password, headers);
         if (body != null && !body.isEmpty()) {
-            delete.addHeader("Content-Type", contentType);
+            delete.addHeader(CONTENT_TYPE, contentType);
             try {
                 StringEntity input = new StringEntity(body);
                 input.setContentType(contentType);