From 4bce8dfcd0b14e64c852390e07ccb5cce7d84e8d Mon Sep 17 00:00:00 2001
From: Nick Burch <nick@apache.org>
Date: Mon, 21 Jan 2008 18:00:30 +0000
Subject: [PATCH] [ooxml-branch] Split the common ss interfaces into two sets -
 one that works with jdk 1.5 and has the full functionality, and another that
 works with jdk 1.4 and only has dummy functionality. Update build.xml to spit
 out two versions of the main classes, one for jdk 1.5 with the full
 interfaces, and one for jdk 1.4 with the dummy ones (but which is otherwise
 like the current behaviour). Also add readme explaining all this

git-svn-id: https://svn.apache.org/repos/asf/poi/branches/ooxml@613951 13f79535-47bb-0310-9956-ffa450edef68
---
 build.xml                                     | 46 ++++++++++++++++---
 src/ooxml/README.interfaces                   | 44 ++++++++++++++++++
 .../org/apache/poi/ss/usermodel/Cell.java     | 20 ++++++++
 .../apache/poi/ss/usermodel/CellStyle.java    | 20 ++++++++
 .../org/apache/poi/ss/usermodel/Color.java    | 20 ++++++++
 .../org/apache/poi/ss/usermodel/Comment.java  | 20 ++++++++
 .../apache/poi/ss/usermodel/DataFormat.java   | 20 ++++++++
 .../org/apache/poi/ss/usermodel/Font.java     | 20 ++++++++
 .../org/apache/poi/ss/usermodel/Footer.java   | 20 ++++++++
 .../org/apache/poi/ss/usermodel/Header.java   | 20 ++++++++
 .../org/apache/poi/ss/usermodel/Name.java     | 20 ++++++++
 .../org/apache/poi/ss/usermodel/Palette.java  | 20 ++++++++
 .../apache/poi/ss/usermodel/Patriarch.java    | 20 ++++++++
 .../apache/poi/ss/usermodel/PrintSetup.java   | 20 ++++++++
 .../poi/ss/usermodel/RichTextString.java      | 20 ++++++++
 .../org/apache/poi/ss/usermodel/Row.java      | 20 ++++++++
 .../poi/ss/usermodel/SharedStringSource.java  | 20 ++++++++
 .../org/apache/poi/ss/usermodel/Sheet.java    | 20 ++++++++
 .../org/apache/poi/ss/usermodel/Textbox.java  | 20 ++++++++
 .../org/apache/poi/ss/usermodel/Workbook.java | 20 ++++++++
 .../org/apache/poi/ss/usermodel/Cell.java     |  0
 .../apache/poi/ss/usermodel/CellStyle.java    |  0
 .../org/apache/poi/ss/usermodel/Color.java    |  0
 .../org/apache/poi/ss/usermodel/Comment.java  |  0
 .../apache/poi/ss/usermodel/DataFormat.java   |  0
 .../org/apache/poi/ss/usermodel/Font.java     |  0
 .../org/apache/poi/ss/usermodel/Footer.java   |  0
 .../org/apache/poi/ss/usermodel/Header.java   |  0
 .../org/apache/poi/ss/usermodel/Name.java     |  0
 .../org/apache/poi/ss/usermodel/Palette.java  |  0
 .../apache/poi/ss/usermodel/Patriarch.java    |  0
 .../apache/poi/ss/usermodel/PrintSetup.java   |  0
 .../poi/ss/usermodel/RichTextString.java      |  0
 .../org/apache/poi/ss/usermodel/Row.java      |  0
 .../poi/ss/usermodel/SharedStringSource.java  |  0
 .../org/apache/poi/ss/usermodel/Sheet.java    | 19 +-------
 .../org/apache/poi/ss/usermodel/Textbox.java  |  0
 .../org/apache/poi/ss/usermodel/Workbook.java |  0
 38 files changed, 445 insertions(+), 24 deletions(-)
 create mode 100644 src/ooxml/README.interfaces
 create mode 100644 src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Cell.java
 create mode 100644 src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/CellStyle.java
 create mode 100644 src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Color.java
 create mode 100644 src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Comment.java
 create mode 100644 src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/DataFormat.java
 create mode 100644 src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Font.java
 create mode 100644 src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Footer.java
 create mode 100644 src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Header.java
 create mode 100644 src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Name.java
 create mode 100644 src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Palette.java
 create mode 100644 src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Patriarch.java
 create mode 100644 src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/PrintSetup.java
 create mode 100644 src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/RichTextString.java
 create mode 100644 src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Row.java
 create mode 100644 src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/SharedStringSource.java
 create mode 100644 src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Sheet.java
 create mode 100644 src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Textbox.java
 create mode 100644 src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Workbook.java
 rename src/ooxml/{java => interfaces-jdk15}/org/apache/poi/ss/usermodel/Cell.java (100%)
 rename src/ooxml/{java => interfaces-jdk15}/org/apache/poi/ss/usermodel/CellStyle.java (100%)
 rename src/ooxml/{java => interfaces-jdk15}/org/apache/poi/ss/usermodel/Color.java (100%)
 rename src/ooxml/{java => interfaces-jdk15}/org/apache/poi/ss/usermodel/Comment.java (100%)
 rename src/ooxml/{java => interfaces-jdk15}/org/apache/poi/ss/usermodel/DataFormat.java (100%)
 rename src/ooxml/{java => interfaces-jdk15}/org/apache/poi/ss/usermodel/Font.java (100%)
 rename src/ooxml/{java => interfaces-jdk15}/org/apache/poi/ss/usermodel/Footer.java (100%)
 rename src/ooxml/{java => interfaces-jdk15}/org/apache/poi/ss/usermodel/Header.java (100%)
 rename src/ooxml/{java => interfaces-jdk15}/org/apache/poi/ss/usermodel/Name.java (100%)
 rename src/ooxml/{java => interfaces-jdk15}/org/apache/poi/ss/usermodel/Palette.java (100%)
 rename src/ooxml/{java => interfaces-jdk15}/org/apache/poi/ss/usermodel/Patriarch.java (100%)
 rename src/ooxml/{java => interfaces-jdk15}/org/apache/poi/ss/usermodel/PrintSetup.java (100%)
 rename src/ooxml/{java => interfaces-jdk15}/org/apache/poi/ss/usermodel/RichTextString.java (100%)
 rename src/ooxml/{java => interfaces-jdk15}/org/apache/poi/ss/usermodel/Row.java (100%)
 rename src/ooxml/{java => interfaces-jdk15}/org/apache/poi/ss/usermodel/SharedStringSource.java (100%)
 rename src/ooxml/{java => interfaces-jdk15}/org/apache/poi/ss/usermodel/Sheet.java (95%)
 rename src/ooxml/{java => interfaces-jdk15}/org/apache/poi/ss/usermodel/Textbox.java (100%)
 rename src/ooxml/{java => interfaces-jdk15}/org/apache/poi/ss/usermodel/Workbook.java (100%)

diff --git a/build.xml b/build.xml
index 2a490c08dd..f2921c19ed 100644
--- a/build.xml
+++ b/build.xml
@@ -45,6 +45,9 @@ under the License.
     To build the documentation you will need to install forrest and set
     the FORREST_HOME environment variable.  Forrest 0.5.1 required.
 
+    You will need JDK 1.5 or newer to build much of POI. If all you want
+    is the core OLE2 support, then you only need JDK 1.4
+
 
     TO BE COMPLETED:
 
@@ -68,6 +71,7 @@ under the License.
   <property name="main.src.test" location="src/testcases"/>
   <property name="main.documentation" value="src/documentation"/>
   <property name="main.output.dir" location="build/classes"/>
+  <property name="main14.output.dir" location="build/classes-jdk14"/>
   <property name="main.output.test.dir" location="build/test-classes"/>
   <property name="main.lib" location="lib"/>
   <property name="ooxml.lib" location="ooxml-lib"/>
@@ -120,6 +124,10 @@ under the License.
   <property name="examples.jar3.url" value="${repository}/commons-lang/jars/commons-lang-2.1.jar"/>
   <property name="examples.testokfile" location="build/examples-testokfile.txt"/>
 
+  <!-- Common interfaces for ole2 and ooxml classes -->
+  <property name="interfaces.jdk14.src" location="src/ooxml/interfaces-jdk14"/>
+  <property name="interfaces.jdk15.src" location="src/ooxml/interfaces-jdk15"/>
+
   <!-- Experimental OOXML support: -->
   <property name="ooxml.src" location="src/ooxml/java"/>
   <property name="ooxml.src.test" location="src/ooxml/testcases"/>
@@ -161,18 +169,30 @@ under the License.
   <property name="jar.name" value="poi"/>
   <property name="version.id" value="3.0.2-beta1"/>
   <property name="halt.on.test.failure" value="true"/>
-  <property name="jdk.version.source" value="1.3"
+
+  <property name="jdk.version.source" value="1.5"
     description="JDK version of source code"/>
-  <property name="jdk.version.class" value="1.3"
+  <property name="jdk.version.class" value="1.5"
     description="JDK version of generated class files"/>  
+  <property name="jdk14.version.source" value="1.3"
+    description="JDK version of source code, when built on JDK 1.4"/>
+  <property name="jdk14.version.class" value="1.3"
+    description="JDK version of generated class files, when built on JDK 1.4"/>  
  
 
+	<!-- normally use the jdk 1.5 stuff -->
     <path id="main.classpath">
         <pathelement location="${main.jar1.dir}"/>
         <pathelement location="${main.jar2.dir}"/>
         <pathelement location="${main.resource1.dir}"/>
     </path>
 
+    <path id="main14.classpath">
+        <pathelement location="${main.jar1.dir}"/>
+        <pathelement location="${main.jar2.dir}"/>
+        <pathelement location="${main.resource1.dir}"/>
+    </path>
+
     <path id="scratchpad.classpath">
         <path refid="main.classpath"/>
         <pathelement location="${main.output.dir}"/>
@@ -260,6 +280,7 @@ under the License.
         
         <mkdir dir="build"/>
         <mkdir dir="${main.output.dir}"/>
+        <mkdir dir="${main14.output.dir}"/>
         <mkdir dir="${scratchpad.output.dir}"/>
         <mkdir dir="${contrib.output.dir}"/>
         <mkdir dir="${examples.output.dir}"/>
@@ -386,8 +407,8 @@ under the License.
 		</xmlbean>
 	</target>
 
-  <target name="compile" depends="init, compile-main, compile-scratchpad,
-    compile-contrib, compile-examples"
+  <target name="compile" depends="init, compile-main, compile-main-14, 
+    compile-scratchpad, compile-contrib, compile-examples"
     description="Compiles the POI main classes, scratchpad, contrib, and examples"/>
 
   <target name="compile-main" depends="fail-unless-xslt-is-available">
@@ -395,8 +416,9 @@ under the License.
       <fileset dir="${main.resource1.dir}"/>
     </copy>
     <javac target="${jdk.version.class}" source="${jdk.version.source}"
-      failonerror="true" destdir="${main.output.dir}" debug="on" fork="yes"
-      srcdir="${main.src}">
+      failonerror="true" destdir="${main.output.dir}" debug="on" fork="yes">
+      <src path="${main.src}" />
+      <src path="${interfaces.jdk15.src}" />
       <classpath refid="main.classpath"/>
     </javac>
     <javac target="${jdk.version.class}" source="${jdk.version.source}"
@@ -410,6 +432,18 @@ under the License.
     </javac>
   </target>
 
+  <target name="compile-main-14" depends="fail-unless-xslt-is-available">
+    <copy todir="${main14.output.dir}">
+      <fileset dir="${main.resource1.dir}"/>
+    </copy>
+    <javac target="${jdk14.version.class}" source="${jdk14.version.source}"
+      failonerror="true" destdir="${main14.output.dir}" debug="on" fork="yes">
+      <src path="${main.src}" />
+      <src path="${interfaces.jdk14.src}" />
+      <classpath refid="main.classpath"/>
+    </javac>
+  </target>
+
   <target name="compile-scratchpad" depends="init,compile-main">
     <javac target="${jdk.version.class}" source="${jdk.version.source}"
       failonerror="true" destdir="${scratchpad.output.dir}" debug="on"
diff --git a/src/ooxml/README.interfaces b/src/ooxml/README.interfaces
new file mode 100644
index 0000000000..0b9e0bea3c
--- /dev/null
+++ b/src/ooxml/README.interfaces
@@ -0,0 +1,44 @@
+            Fun with Interfaces
+            -------------------
+
+Let us consider a simple case
+
+  public Interface IFoo {}
+  public Interface IBar {
+     public IFoo getFoo();
+  }
+
+  public class RealFoo implements IFoo {}
+  public class RealBar implements IBar {
+     public RealFoo getFoo() { return new RealFoo(); }
+  }
+
+Looks ok, doesn't it? If you access RealBar directly, you get back a
+RealFoo. If you access RealBar via the IBar interface, you get back a
+IFoo object instead. All looks good.
+
+Only snag - this doesn't work with any JDK older than 1.5. If you're on
+JDK 1.3 or JDK 1.4, you will get a compile time error about incompatible
+return signatures.
+
+
+At the moment, we're still committed to having the core of POI work on
+JDK 1.3 / JDK 1.4. If you want the OOXML support, then you need to move
+to JDK 1.5. This allows us a sort of work-around for the problems:
+
+JDK 1.3 / JDK 1.4:
+ You can't use the OOXML stuff anyway, so you probably don't care about
+  the new interfaces
+ So, have the existing code (hssf) compile against dummy interfaces, which 
+  don't actually provide any methods
+ You can't then use the interfaces, but you probably didn't want to anyway
+ These live in src/ooxml/interfaces-jdk14
+
+JDK 1.5:
+ Compile the existing code (hssf) against full interfaces. Users can still
+  use the concrete HSSF classes if they want, or if they use the interfaces,
+  their code will work with the ooxml support too
+ Need to change any methods that take a concrete object (eg HSSFCell) to
+  take the interface (eg Cell), and cast, otherwise they're not compatible
+  with the interface contract (which specifies Cell not HSSFCell).
+ These live in src/ooxml/interfaces-jdk15
diff --git a/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Cell.java b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Cell.java
new file mode 100644
index 0000000000..805a6b1c83
--- /dev/null
+++ b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Cell.java
@@ -0,0 +1,20 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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.apache.poi.ss.usermodel;
+
+public interface Cell {}
diff --git a/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/CellStyle.java b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/CellStyle.java
new file mode 100644
index 0000000000..c23d696aef
--- /dev/null
+++ b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/CellStyle.java
@@ -0,0 +1,20 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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.apache.poi.ss.usermodel;
+
+public interface CellStyle {}
diff --git a/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Color.java b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Color.java
new file mode 100644
index 0000000000..7a9633a0c2
--- /dev/null
+++ b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Color.java
@@ -0,0 +1,20 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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.apache.poi.ss.usermodel;
+
+public interface Color {}
diff --git a/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Comment.java b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Comment.java
new file mode 100644
index 0000000000..0b1d55c568
--- /dev/null
+++ b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Comment.java
@@ -0,0 +1,20 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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.apache.poi.ss.usermodel;
+
+public interface Comment {}
diff --git a/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/DataFormat.java b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/DataFormat.java
new file mode 100644
index 0000000000..525c79c6ba
--- /dev/null
+++ b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/DataFormat.java
@@ -0,0 +1,20 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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.apache.poi.ss.usermodel;
+
+public interface DataFormat {}
diff --git a/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Font.java b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Font.java
new file mode 100644
index 0000000000..aad44e30c8
--- /dev/null
+++ b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Font.java
@@ -0,0 +1,20 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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.apache.poi.ss.usermodel;
+
+public interface Font {}
diff --git a/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Footer.java b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Footer.java
new file mode 100644
index 0000000000..c278c5d492
--- /dev/null
+++ b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Footer.java
@@ -0,0 +1,20 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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.apache.poi.ss.usermodel;
+
+public interface Footer {}
diff --git a/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Header.java b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Header.java
new file mode 100644
index 0000000000..0c7ba2c338
--- /dev/null
+++ b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Header.java
@@ -0,0 +1,20 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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.apache.poi.ss.usermodel;
+
+public interface Header {}
diff --git a/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Name.java b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Name.java
new file mode 100644
index 0000000000..a4f757e945
--- /dev/null
+++ b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Name.java
@@ -0,0 +1,20 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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.apache.poi.ss.usermodel;
+
+public interface Name {}
diff --git a/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Palette.java b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Palette.java
new file mode 100644
index 0000000000..9048fb5b72
--- /dev/null
+++ b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Palette.java
@@ -0,0 +1,20 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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.apache.poi.ss.usermodel;
+
+public interface Palette {}
diff --git a/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Patriarch.java b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Patriarch.java
new file mode 100644
index 0000000000..92db05756e
--- /dev/null
+++ b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Patriarch.java
@@ -0,0 +1,20 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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.apache.poi.ss.usermodel;
+
+public interface Patriarch {}
diff --git a/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/PrintSetup.java b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/PrintSetup.java
new file mode 100644
index 0000000000..20b5b080dc
--- /dev/null
+++ b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/PrintSetup.java
@@ -0,0 +1,20 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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.apache.poi.ss.usermodel;
+
+public interface PrintSetup {}
diff --git a/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/RichTextString.java b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/RichTextString.java
new file mode 100644
index 0000000000..0d2e17d820
--- /dev/null
+++ b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/RichTextString.java
@@ -0,0 +1,20 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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.apache.poi.ss.usermodel;
+
+public interface RichTextString {}
diff --git a/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Row.java b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Row.java
new file mode 100644
index 0000000000..46d58cfb84
--- /dev/null
+++ b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Row.java
@@ -0,0 +1,20 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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.apache.poi.ss.usermodel;
+
+public interface Row {}
diff --git a/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/SharedStringSource.java b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/SharedStringSource.java
new file mode 100644
index 0000000000..1c1075a479
--- /dev/null
+++ b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/SharedStringSource.java
@@ -0,0 +1,20 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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.apache.poi.ss.usermodel;
+
+public interface SharedStringSource {}
diff --git a/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Sheet.java b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Sheet.java
new file mode 100644
index 0000000000..e2acdec93f
--- /dev/null
+++ b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Sheet.java
@@ -0,0 +1,20 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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.apache.poi.ss.usermodel;
+
+public interface Sheet {}
diff --git a/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Textbox.java b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Textbox.java
new file mode 100644
index 0000000000..212c400acc
--- /dev/null
+++ b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Textbox.java
@@ -0,0 +1,20 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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.apache.poi.ss.usermodel;
+
+public interface Textbox {}
diff --git a/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Workbook.java b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Workbook.java
new file mode 100644
index 0000000000..728736a6cd
--- /dev/null
+++ b/src/ooxml/interfaces-jdk14/org/apache/poi/ss/usermodel/Workbook.java
@@ -0,0 +1,20 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You 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.apache.poi.ss.usermodel;
+
+public interface Workbook {}
diff --git a/src/ooxml/java/org/apache/poi/ss/usermodel/Cell.java b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Cell.java
similarity index 100%
rename from src/ooxml/java/org/apache/poi/ss/usermodel/Cell.java
rename to src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Cell.java
diff --git a/src/ooxml/java/org/apache/poi/ss/usermodel/CellStyle.java b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/CellStyle.java
similarity index 100%
rename from src/ooxml/java/org/apache/poi/ss/usermodel/CellStyle.java
rename to src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/CellStyle.java
diff --git a/src/ooxml/java/org/apache/poi/ss/usermodel/Color.java b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Color.java
similarity index 100%
rename from src/ooxml/java/org/apache/poi/ss/usermodel/Color.java
rename to src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Color.java
diff --git a/src/ooxml/java/org/apache/poi/ss/usermodel/Comment.java b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Comment.java
similarity index 100%
rename from src/ooxml/java/org/apache/poi/ss/usermodel/Comment.java
rename to src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Comment.java
diff --git a/src/ooxml/java/org/apache/poi/ss/usermodel/DataFormat.java b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/DataFormat.java
similarity index 100%
rename from src/ooxml/java/org/apache/poi/ss/usermodel/DataFormat.java
rename to src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/DataFormat.java
diff --git a/src/ooxml/java/org/apache/poi/ss/usermodel/Font.java b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Font.java
similarity index 100%
rename from src/ooxml/java/org/apache/poi/ss/usermodel/Font.java
rename to src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Font.java
diff --git a/src/ooxml/java/org/apache/poi/ss/usermodel/Footer.java b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Footer.java
similarity index 100%
rename from src/ooxml/java/org/apache/poi/ss/usermodel/Footer.java
rename to src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Footer.java
diff --git a/src/ooxml/java/org/apache/poi/ss/usermodel/Header.java b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Header.java
similarity index 100%
rename from src/ooxml/java/org/apache/poi/ss/usermodel/Header.java
rename to src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Header.java
diff --git a/src/ooxml/java/org/apache/poi/ss/usermodel/Name.java b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Name.java
similarity index 100%
rename from src/ooxml/java/org/apache/poi/ss/usermodel/Name.java
rename to src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Name.java
diff --git a/src/ooxml/java/org/apache/poi/ss/usermodel/Palette.java b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Palette.java
similarity index 100%
rename from src/ooxml/java/org/apache/poi/ss/usermodel/Palette.java
rename to src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Palette.java
diff --git a/src/ooxml/java/org/apache/poi/ss/usermodel/Patriarch.java b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Patriarch.java
similarity index 100%
rename from src/ooxml/java/org/apache/poi/ss/usermodel/Patriarch.java
rename to src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Patriarch.java
diff --git a/src/ooxml/java/org/apache/poi/ss/usermodel/PrintSetup.java b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/PrintSetup.java
similarity index 100%
rename from src/ooxml/java/org/apache/poi/ss/usermodel/PrintSetup.java
rename to src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/PrintSetup.java
diff --git a/src/ooxml/java/org/apache/poi/ss/usermodel/RichTextString.java b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/RichTextString.java
similarity index 100%
rename from src/ooxml/java/org/apache/poi/ss/usermodel/RichTextString.java
rename to src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/RichTextString.java
diff --git a/src/ooxml/java/org/apache/poi/ss/usermodel/Row.java b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Row.java
similarity index 100%
rename from src/ooxml/java/org/apache/poi/ss/usermodel/Row.java
rename to src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Row.java
diff --git a/src/ooxml/java/org/apache/poi/ss/usermodel/SharedStringSource.java b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/SharedStringSource.java
similarity index 100%
rename from src/ooxml/java/org/apache/poi/ss/usermodel/SharedStringSource.java
rename to src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/SharedStringSource.java
diff --git a/src/ooxml/java/org/apache/poi/ss/usermodel/Sheet.java b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Sheet.java
similarity index 95%
rename from src/ooxml/java/org/apache/poi/ss/usermodel/Sheet.java
rename to src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Sheet.java
index 17de5002ca..df06129fd1 100644
--- a/src/ooxml/java/org/apache/poi/ss/usermodel/Sheet.java
+++ b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Sheet.java
@@ -19,23 +19,6 @@ package org.apache.poi.ss.usermodel;
 
 import java.util.Iterator;
 
-/* ====================================================================
-Licensed to the Apache Software Foundation (ASF) under one or more
-contributor license agreements.  See the NOTICE file distributed with
-this work for additional information regarding copyright ownership.
-The ASF licenses this file to You 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.
-==================================================================== */
-
 import org.apache.poi.hssf.util.PaneInformation;
 import org.apache.poi.hssf.util.Region;
 
@@ -724,4 +707,4 @@ public interface Sheet {
      */
     Comment getCellComment(int row, int column);
 
-}
\ No newline at end of file
+}
diff --git a/src/ooxml/java/org/apache/poi/ss/usermodel/Textbox.java b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Textbox.java
similarity index 100%
rename from src/ooxml/java/org/apache/poi/ss/usermodel/Textbox.java
rename to src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Textbox.java
diff --git a/src/ooxml/java/org/apache/poi/ss/usermodel/Workbook.java b/src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Workbook.java
similarity index 100%
rename from src/ooxml/java/org/apache/poi/ss/usermodel/Workbook.java
rename to src/ooxml/interfaces-jdk15/org/apache/poi/ss/usermodel/Workbook.java