diff --git a/java/pom.xml b/java/pom.xml
index 3eb7a70315..3869773156 100644
--- a/java/pom.xml
+++ b/java/pom.xml
@@ -81,7 +81,17 @@
+
+
+
+
+
+
+
+
+
+
target/generated-sources
@@ -130,6 +140,7 @@
+
@@ -157,6 +168,24 @@
+
+
+ ../src
+
+ google/protobuf/any.proto
+ google/protobuf/api.proto
+ google/protobuf/descriptor.proto
+ google/protobuf/duration.proto
+ google/protobuf/empty.proto
+ google/protobuf/field_mask.proto
+ google/protobuf/source_context.proto
+ google/protobuf/struct.proto
+ google/protobuf/timestamp.proto
+ google/protobuf/type.proto
+ google/protobuf/wrappers.proto
+
+
+
diff --git a/java/src/test/java/com/google/protobuf/WellKnownTypesTest.java b/java/src/test/java/com/google/protobuf/WellKnownTypesTest.java
new file mode 100644
index 0000000000..982e200f53
--- /dev/null
+++ b/java/src/test/java/com/google/protobuf/WellKnownTypesTest.java
@@ -0,0 +1,65 @@
+// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc. All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package com.google.protobuf;
+
+import com.google.protobuf.Descriptors.Descriptor;
+import com.google.protobuf.Descriptors.EnumDescriptor;
+import com.google.protobuf.Descriptors.EnumValueDescriptor;
+import com.google.protobuf.Descriptors.FieldDescriptor;
+import com.google.protobuf.test.TestWellKnownTypes;
+
+import junit.framework.TestCase;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * This test ensures that well-known types are included in protobuf Java
+ * runtime library.
+ */
+public class WellKnownTypesTest extends TestCase {
+ public void testWellKnownTypes() {
+ // The test passes if it compiles.
+ TestWellKnownTypes message = TestWellKnownTypes.newBuilder().build();
+ assertEquals(0, message.getAnyField().getSerializedSize());
+ assertEquals(0, message.getApiField().getSerializedSize());
+ assertEquals(0, message.getDurationField().getSerializedSize());
+ assertEquals(0, message.getEmptyField().getSerializedSize());
+ assertEquals(0, message.getFieldMaskField().getSerializedSize());
+ assertEquals(0, message.getSourceContextField().getSerializedSize());
+ assertEquals(0, message.getStructField().getSerializedSize());
+ assertEquals(0, message.getTimestampField().getSerializedSize());
+ assertEquals(0, message.getTypeField().getSerializedSize());
+ assertEquals(0, message.getInt32Field().getSerializedSize());
+ }
+}
diff --git a/src/google/protobuf/unittest_well_known_types.proto b/src/google/protobuf/unittest_well_known_types.proto
index 2d422d8cb2..e157260e5c 100644
--- a/src/google/protobuf/unittest_well_known_types.proto
+++ b/src/google/protobuf/unittest_well_known_types.proto
@@ -2,6 +2,9 @@ syntax = "proto3";
package protobuf_unittest;
+option java_multiple_files = true;
+option java_package = "com.google.protobuf.test";
+
import "google/protobuf/any.proto";
import "google/protobuf/api.proto";
import "google/protobuf/duration.proto";