diff --git a/samples/client/petstore/java/src/main/java/com/wordnik/client/JsonUtil.java b/samples/client/petstore/java/src/main/java/com/wordnik/client/JsonUtil.java
new file mode 100644
index 00000000000..4dc919306d5
--- /dev/null
+++ b/samples/client/petstore/java/src/main/java/com/wordnik/client/JsonUtil.java
@@ -0,0 +1,21 @@
+package com.wordnik.client;
+
+import com.fasterxml.jackson.annotation.*;
+import com.fasterxml.jackson.databind.*;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+import com.fasterxml.jackson.core.JsonGenerator.Feature;
+
+public class JsonUtil {
+  public static ObjectMapper mapper;
+
+  static {
+  	mapper = new ObjectMapper();
+	  mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+	  mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
+	}
+
+	public static ObjectMapper getJsonMapper() {
+		return mapper;
+	}
+}
+