Fix #1628 for 2.7(.10)

Author: cowtowncoder

release-notes/VERSION

@@ -4,10 +4,12 @@ Project: jackson-databind
 === Releases ===
 ------------------------------------------------------------------------
 
-2.7.9.2 (not yet released)
+2.7.10 (not yet released)
 
 #1607: @JsonIdentityReference not used when setup on class only
  (reported by vboulaye@github)
+#1628: Don't print to error stream about failure to load JDK 7 types
+ (reported by Villane@github)
 
 2.7.9.1 (18-Apr-2017)
 

src/main/java/com/fasterxml/jackson/databind/ext/OptionalHandlerFactory.java

@@ -1,5 +1,8 @@
 package com.fasterxml.jackson.databind.ext;
 
+import java.util.logging.Logger;
+import java.util.logging.Level;
+
 import com.fasterxml.jackson.databind.*;
 import com.fasterxml.jackson.databind.deser.Deserializers;
 import com.fasterxml.jackson.databind.ser.Serializers;
@@ -52,7 +55,8 @@ public class OptionalHandlerFactory implements java.io.Serializable
             doc = org.w3c.dom.Document.class;
         } catch (Exception e) {
             // not optimal but will do
-            System.err.println("WARNING: could not load DOM Node and/or Document classes");
+            Logger.getLogger("com.fasterxml.jackson.databind.ext.OptionalHandlerFactory")
+                .log(Level.INFO, "Could not load DOM `Node` and/or `Document` classes: ignoring");
         }
         CLASS_DOM_NODE = node;
         CLASS_DOM_DOCUMENT = doc;
@@ -68,8 +72,8 @@ public class OptionalHandlerFactory implements java.io.Serializable
         try {
             cls = Class.forName("java.nio.file.Path");
         } catch (Exception e) {
-            // not optimal but will do
-            System.err.println("WARNING: could not load Java7 Path class");
+            Logger.getLogger("com.fasterxml.jackson.databind.ext.OptionalHandlerFactory")
+                .log(Level.INFO, "Could not load Java7 `java.nio.file.Path` class: ignoring");
         }
         CLASS_JAVA7_PATH = cls;
     }