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diff --git a/javax/tools/StandardLocation.java b/javax/tools/StandardLocation.java
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+/* StandardLocation.java -- Enumeration of standard file locations.
+   Copyright (C) 2012  Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package javax.tools;
+
+import java.util.concurrent.ConcurrentMap;
+import java.util.concurrent.ConcurrentHashMap;
+
+import static javax.tools.JavaFileManager.Location;
+
+/**
+ * Enumeration of standard locations for storing
+ * {@link FileObject}s.
+ *
+ * @author Andrew John Hughes (gnu_andrew@member.fsf.org)
+ * @since 1.6
+ */
+public enum StandardLocation
+  implements Location
+{
+  /** Location where annotation processors are found. */
+  ANNOTATION_PROCESSOR_PATH { @Override public boolean isOutputLocation() { return false; } },
+  /** Location to write class files to. */
+  CLASS_OUTPUT { @Override public boolean isOutputLocation() { return true; } },
+  /** Location where class files are found. */
+  CLASS_PATH { @Override public boolean isOutputLocation() { return false; } },
+  /** Location where platform class files are found. */
+  PLATFORM_CLASS_PATH { @Override public boolean isOutputLocation() { return false; } },
+  /** Location to write source files to. */
+  SOURCE_OUTPUT { @Override public boolean isOutputLocation() { return true; } },
+  /** Location where source files are found. */
+  SOURCE_PATH { @Override public boolean isOutputLocation() { return false; } };
+  
+  private static final ConcurrentMap<String,Location> locCache =
+    new ConcurrentHashMap<String,Location>();
+
+  static
+  {
+    for (StandardLocation loc : values())
+      locCache.put(loc.name(), loc);
+  }
+
+  /**
+   * Returns the name of the location.  This is simply
+   * the enum constant.
+   *
+   * @return the name of the location.
+   */
+  @Override
+  public String getName()
+  {
+    return name();
+  }
+
+  /**
+   * Returns an instance of {@link JavaFileManager.Location}
+   * for the given name.  If the name is one of the standard
+   * names, the enumeration constant is returned.  Otherwise,
+   * a new instance is generated.  For location names {@code x}
+   * and {@code y}, {@code locationFor(x) == locationFor(y)}
+   * if, and only if, {@code x.equals(y)}.  The returned location
+   * will only be an output location if the name ends with
+   * the suffix {@code "_OUTPUT"}.
+   *
+   * @param name the name of the location.
+   * @return the location.
+   */
+  public static Location locationFor(String name)
+  {
+    final String locName = name;
+    Location loc = locCache.get(name);
+    if (loc == null)
+      {
+	loc = new Location() {
+	  public String getName() { return locName; }
+	  public boolean isOutputLocation() { return locName.endsWith("_OUTPUT"); }
+	};
+	Location mapLoc = locCache.putIfAbsent(name, loc);
+	if (mapLoc != null) // Someone got there first
+	  loc = mapLoc;
+      }
+    return loc;
+  }
+
+}