Instruction to test webrev

Xueming Shen xueming.shen at
Fri Mar 18 21:15:05 UTC 2016

Hi HongDai,

The easiest way to test the proposed regex change without building the jdk
is to copy all source files from j.u.regex into a local directory, update them
with the latest version from the webrev, change the "package ..." line of
each file to some dummy package name (to avoid "java..."), and compile.
You now have a local copy of the regex to test on.

For example I have a regex.jar at

with the latest change I proposed in

You can test with the package name "" (I just added a prefix
"jdk" to the official package name java.util.regex), for example do


And compile your test code with

javac -cp regex.jar

and run with

java -cp regex.jar:./ Test

I know Vietnamese relies heavily on combining characters, it would be appreciated
if you can help try out the latest regex changes to see if it works as expected under
CANON_EQ mode.


On 03/18/2016 07:31 AM, Roger Riggs wrote:
> Hi,
> Jtreg can be passed a directory or individual .java file to be tested.
> The regex tests are in <tree>/jdk/test/java/util/regex/...
> jtreg -jdk:<tree>/build/.../images/jdk> -dir:<tree>jdk/test java/util/regex
> For just compile and run the .java files in that directory.
> Roger
> On 3/18/2016 2:44 AM, Thanh Hong Dai wrote:
>> Hi,
>> I'm interested in testing some of the webrev, esp. regex webrev, but I don't want to recompile the whole JDK just for this. Is there any way to test only the regex package?
>> Best regards,
>> Hong Dai Thanh

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