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diff --git a/tensorflow/java/src/main/java/org/tensorflow/types/Types.java b/tensorflow/java/src/main/java/org/tensorflow/types/Types.java
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+/* Copyright 2017 The TensorFlow Authors. 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.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+==============================================================================*/
+package org.tensorflow.types;
+
+import java.util.HashMap;
+import java.util.Map;
+import org.tensorflow.DataType;
+
+/**
+ * Utility class for managing the representation of TensorFlow types as Java
+ * types. For each TensorFlow type (e.g., int32), there is a corresponding Java
+ * type (e.g., TFInt32) that represents it at compile time and a corresponding
+ * class object (e.g., TFInt32.class) that represents it at run time. There is
+ * also an enumeration value in DataType that can be used to represent the
+ * type, though that should rarely be required.
+ */
+public class Types {
+
+  private Types() {} // not instantiable
+
+  static final Map<Class<?>, DataType> typeCodes = new HashMap<>();
+
+  /** Returns the DataType value corresponding to a TensorFlow type class. */
+  public static DataType dataType(Class<? extends TFType> c) {
+    DataType dtype = typeCodes.get(c);
+    if (dtype == null) {
+      throw new IllegalArgumentException("" + c + " is not a TensorFlow type.");
+    }
+    return dtype;
+  }
+
+  static final Map<Class<?>, Object> scalars = new HashMap<>();
+
+  /** Returns the zero value of type described by {@code c}, or null if
+   *  the type (e.g., string) is not numeric and therefore has no zero value.
+   */
+  public static Object zeroValue(Class<? extends TFType> c) {
+    return scalars.get(c);
+  }
+}