TECHNOLOGY LICENSE FROM SUN MICROSYSTEMS, INC.
                         TO DOUG LEA

Whereas Doug Lea desires to utlized certain Java Software technologies
in the util.concurrent technology; and

Whereas Sun Microsystems, Inc. (“Sun”) desires that Doug Lea utilize
certain Java Software technologies in the util.concurrent technology;

Therefore the parties agree as follows, effective May 31, 2002:

“Java Software technologies” means

       classes/java/util/ArrayList.java, and
       classes/java/util/HashMap.java.

The Java Software technologies are Copyright (c) 1994-2000 Sun
Microsystems, Inc. All rights reserved.

Sun hereby grants Doug Lea a non-exclusive, worldwide,
non-transferrable license to use, reproduce, create derivate works of,
and distribute the Java Software and derivative works thereof in
source and binary forms as part of a larger work, and to sublicense
the right to use, reproduce and distribute the Java Software and Doug
Lea's derivative works as the part of larger works through multiple
tiers of sublicensees provided that the following conditions are met:

-Neither the name of or trademarks of Sun may be used to endorse or
promote products including or derived from the Java Software
technology without specific prior written permission; and
-Redistributions of source or binary code must contain the above
copyright notice, this notice and and the following disclaimers:

This software is provided "AS IS," without a warranty of any kind.
ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
MICROSYSTEMS, INC. AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY
DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN
MICROSYSTEMS, INC. OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE,
PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,
INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE
THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE
SOFTWARE, EVEN IF SUN MICROSYSTEMS, INC. HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES. You acknowledge that Software is not
designed,licensed or intended for use in the design, construction,
operation or maintenance of any nuclear facility.


       signed [Doug Lea]                                    dated