--- old/src/share/classes/org/openjdk/jigsaw/Library.java	Thu Apr 26 16:20:19 2012
+++ new/src/share/classes/org/openjdk/jigsaw/Library.java	Thu Apr 26 16:20:19 2012
@@ -78,7 +78,7 @@
     public abstract int minorVersion();
 
     public abstract Library parent();
-    
+
     /**
      * <p> Read the module-info class bytes for the module with the given
      * identifier, from this library only. </p>
@@ -281,6 +281,43 @@
         throws ConfigurationException, IOException, SignatureException;
 
     /**
+     * Remove one or more modules from this library.
+     *
+     * @param   mids
+     *          The module identifiers
+     *
+     * @return  A list of IOExceptions, if any, that were encountered when
+     *          removing the actual content of the given modules
+     *
+     * @throws  ConfigurationException
+     *          If the configuration of any root modules in the library
+     *          require any of the given modules
+     *
+     * @throws  IOException
+     *          If an I/O error occurs while accessing the module library
+     */
+    public abstract List<IOException> remove(List<ModuleId> mids, boolean dry)
+        throws ConfigurationException, IOException;
+
+    /**
+     * Forcibly remove one or more modules from this library.
+     *
+     * <p> No regard is given to configuration of any root modules in the
+     * library that may require any of the given modules. </p>
+     *
+     * @param   mids
+     *          The module identifiers
+     *
+     * @return  A list of IOExceptions, if any, that were encountered when
+     *          removing the actual content of the given modules
+     *
+     * @throws  IOException
+     *          If an I/O error occurs while accessing the module library
+     */
+    public abstract List<IOException> removeForcibly(List<ModuleId> mids)
+        throws IOException;
+
+    /**
      * Find a resource within the given module in this library.
      *
      * @param   mid
@@ -333,7 +370,7 @@
     public abstract RemoteRepositoryList repositoryList() throws IOException;
 
     /**
-     * <p> Read the CodeSigners for the module with the given identifier, from 
+     * <p> Read the CodeSigners for the module with the given identifier, from
      * this library only. </p>
      *
      * @param   mid