Added HEAD and reset method.

Author: lreimer

src/main/java/com/packtpub/javaee8/JsonpResource.java

@@ -19,6 +19,7 @@ public class JsonpResource {
     private JsonArray jsonArray;
 
     @PostConstruct
+    @HEAD
     public void initialize() {
         this.jsonArray = Json.createArrayBuilder()
                 .add(Json.createObjectBuilder()

src/test/java/com/packtpub/javaee8/JsonpResourceIntegrationTest.java

@@ -85,4 +85,10 @@ public void _5_GetJsonpAfterPatch() {
         JsonArray jsonArray = webTarget.request().accept(MediaType.APPLICATION_JSON).get(JsonArray.class);
         assertThat(jsonArray.getJsonObject(0).getString("aString")).isEqualTo("Patched Json-P");
     }
+
+    @Test
+    public void _99_Reset() {
+        Response response = webTarget.request().head();
+        assertThat(response.getStatus()).isEqualTo(204);
+    }
 }