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mani1 |
Hello all |
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| 15:58 |
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shelajev |
hello, people! |
| 15:58 |
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JavaDevVictoria |
hi |
| 15:58 |
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shelajev |
we're almost ready to start |
| 15:58 |
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BenTels |
Hello! |
| 15:59 |
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| 15:59 |
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fvanloenen |
hello |
| 16:00 |
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mani1 |
Hello all again |
| 16:00 |
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mani1 |
shelajev: hello Oleg |
| 16:00 |
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mani1 |
sjmaple: hello Simon |
| 16:00 |
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| 16:00 |
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shelajev |
hey, @mani1 |
| 16:00 |
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shelajev |
what Java 9 thing are you looking forward the most? |
| 16:01 |
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fvanloenen |
Functional programming expanded as of version 8 |
| 16:01 |
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| 16:02 |
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shelajev |
if the stream quality is not HD, use the youtube cog icon to increase the quality |
| 16:02 |
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JavaDevVictoria |
the stream has frozen |
| 16:03 |
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shelajev |
if you have any questions, please ask them here, or Twitter using the #java9 |
| 16:03 |
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shelajev |
so we can find them |
| 16:03 |
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shelajev |
JavaDevVictoria, try refreshing the page pls? |
| 16:04 |
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| 16:04 |
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maartenklok |
Is there a possibility to improve the sound quality of Bert-Jan? |
| 16:04 |
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shelajev |
the stream works for me (from YouTube) |
| 16:04 |
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shelajev |
maartenklok, let me see |
| 16:04 |
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prash |
sound quality is indeed poor |
| 16:05 |
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| 16:09 |
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| 16:12 |
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shelajev |
"how others are using my modules" -- they open you and use as before :D |
| 16:12 |
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| 16:14 |
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| 16:15 |
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shelajev |
how many of you tried Java 9 on their main project? |
| 16:15 |
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| 16:15 |
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shelajev |
like running CI / staging, etc. |
| 16:15 |
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shelajev |
Does it even build / start? |
| 16:16 |
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tjololo |
haven't tried it yet, but would be interesting to try |
| 16:17 |
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tjololo |
expecting alot of crash and burn:P |
| 16:17 |
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shelajev |
tjololo, maven or gradle? |
| 16:18 |
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tjololo |
shelajev: primarly maven, but have som services buildt with gradle |
| 16:18 |
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shelajev |
if maven I bet a cup of coffee that it doesn't build by default :P |
| 16:19 |
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tjololo |
that sounds like a safe bet for you :D |
| 16:19 |
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shelajev |
I'm a developer advocate, I write hello worlds for days :D there can be simple projects |
| 16:21 |
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tjololo |
hehe, thats true, but as far as I remember there is not a lot of hello world style services in our git repository and sertainly not in our CI |
| 16:21 |
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abubakkar |
difference between provides and exports? |
| 16:21 |
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shelajev |
try it though, it is educational |
| 16:22 |
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shelajev |
exports - declares that every other module can use the public classes in your module |
| 16:22 |
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| 16:22 |
|
mani1 |
sjmaple: real nice example of ServiceLoaders - can you pls share the example with us |
| 16:22 |
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shelajev |
provides -- declares that a specific interface is satisfied with an implemenation, so you can find an implementation by querying the interface |
| 16:23 |
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tjololo |
shelajev: will spin up a new CI when I have a slow day at work and watch it scream:P |
| 16:24 |
|
mani1 |
Shameless plug to all, here's some Java 9 Resoureces: https://github.com/AdoptOpenJDK/jdk9-jigsaw/blob/master/Java-9-Resources.md - contributions are welcome, just a PR away |
| 16:25 |
|
mani1 |
shelajev: Well done citing Kirk about G1GC tuning tips and tricks |
| 16:27 |
|
sjmaple |
mani: https://github.com/sjmaple/jigsaw-sample |
| 16:28 |
|
mani1 |
sjmaple: Thanks |
| 16:28 |
|
sjmaple |
although that's a more basic example without intelliJ stuff and the loop |
| 16:28 |
|
mani1 |
sjmaple: so its not the same one you showed in the session just now? |
| 16:29 |
|
sjmaple |
it's very similar in structure |
| 16:29 |
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| 16:30 |
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mani1 |
ok |
| 16:30 |
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| 16:30 |
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| 16:30 |
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abubakkar |
what's the use of _ then ? |
| 16:30 |
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mani1 |
sjmaple: shelajev: can you add any ZT or VJUG resources to https://github.com/AdoptOpenJDK/jdk9-jigsaw/blob/master/Java-9-Resources.md when you get a chance |
| 16:31 |
|
abubakkar |
each keyword has some purpose, what the purpose of _ |
| 16:31 |
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| 16:32 |
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| 16:32 |
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| 16:33 |
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abubakkar |
Thanks @sjmaple @shelajev |
| 16:34 |
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| 16:35 |
|
mani1 |
Here's a demo by Hendriks during our last Java 9 Hackday in April - he gave a 30mins demo on JShell - https://youtu.be/y868lMk6NtY?t=14709 ! Enjoy! |
| 16:36 |
|
shelajev |
here's a JEP which will make use of the _ as the ignored parameter: http://openjdk.java.net/jeps/302 |
| 16:36 |
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shelajev |
there are a couple additional things, but it's a good read |
| 16:36 |
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| 16:37 |
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abubakkar |
Thanks @shelajev |
| 16:38 |
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| 16:39 |
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| 16:41 |
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| 16:47 |
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mani1 |
Thanks Jonathan for sharing with us these performance tweaks and benefits when using Java 9 |
| 16:50 |
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| 16:53 |
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| 16:54 |
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abubakkar |
echo...echo... |
| 16:55 |
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BenTels |
No sound... |
| 16:55 |
|
mani1 |
Not able to hear Robert |
| 16:55 |
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shelajev |
yep, thanks :) figured it out |
| 16:55 |
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BenTels |
Suggest (echo + silence)/2 |
| 16:55 |
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abubakkar |
betterr |
| 16:55 |
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mauricedchateau |
better like this? |
| 16:55 |
|
shelajev |
multiple laptops in 1 room is hard :S |
| 16:56 |
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BenTels |
(y) |
| 16:56 |
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shelajev |
two thousand freaking seventeen and the video conferencing is like we're exchanging packets with pigeons |
| 17:01 |
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| 17:02 |
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mani1 |
shelajev: only if you keep pigeons, some of us have other chirpy things ;) |
| 17:02 |
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| 17:11 |
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| 17:12 |
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mani1 |
Toolchain must be using java 8 somewhere. |
| 17:12 |
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BenTels |
Toolchain config still set to exclude 9 |
| 17:16 |
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sjmaple |
Any questions for the Q&A? |
| 17:17 |
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mauricedchateau |
so far, just from Oleg... |
| 17:17 |
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abubakkar |
excellent question Oleg |
| 17:18 |
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| 17:18 |
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| 17:19 |
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mani1 |
shelajev: I think both Java and Maven would have to work together to iron out incompatibility issues |
| 17:20 |
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zcube |
By looking at demo now there are two places to manage? one the module.info and other maven dependencies? |
| 17:23 |
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| 17:23 |
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shelajev |
what's the preferred modularization path now, bottom up: wait for the libraries and your dependencies first, modularize 2 years later? or start immediately? |
| 17:23 |
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shelajev |
#java9 :D |
| 17:24 |
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shelajev |
would you run binaries built by jlink in production or still run the full JDK because it's stable? |
| 17:24 |
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sjmaple |
What will make a developer *want* to migrate up to Java 9? What's the killer feature that will make people invest their time to update? |
| 17:25 |
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abubakkar |
I think a major chunk of developer will wait and watch for a while, before migrating to java9 |
| 17:26 |
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mani1 |
By the way Gradle has this page on how to build Java 9 modules using Gradle - https://guides.gradle.org/building-java-9-modules/ |
| 17:26 |
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zcube |
@mani1 thank you |
| 17:26 |
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| 17:26 |
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abubakkar |
I would have liked jshell made available for java8 in addition to java9 for projects not ready to be migrated to java9 |
| 17:26 |
|
mani1 |
Gradle has had a long standing issue but have been working on fixing it since early this year |
| 17:27 |
|
shelajev |
I think this is the page Robert shows https://cwiki.apache.org/confluence/display/MAVEN/Java+9+-+Jigsaw |
| 17:28 |
|
shelajev |
how does shadow / uberjar plugin works now? |
| 17:31 |
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mani1 |
shelajev: You are asking maven sensitive questions, :P, you might end up on the build tools hit list :) ;) :P |
| 17:32 |
|
prash |
Simon, we cant see anything |
| 17:32 |
|
prash |
can you focus your screen |
| 17:32 |
|
mani1 |
sjmaple: can you pls switch focus to your screen |
| 17:32 |
|
johnsgp |
please change presenter |
| 17:32 |
|
mani1 |
we can't see the presentation clearly, just hear you |
| 17:32 |
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| 17:33 |
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shelajev |
nope actually interested in any build tool doing the shadowing? I think you end up with tons of packages in 1 jar. I think there might be some conceptual problems not maven specific. Like how to build a jar out of many jars. What do you need to update? manifests? module-info.class-es? |
| 17:33 |
|
BenTels |
IntelliJ not on screen... |
| 17:33 |
|
shelajev |
fixed, sorry :) |
| 17:34 |
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| 17:35 |
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zcube |
can we have the demo shared on screen? |
| 17:35 |
|
zcube |
no |
| 17:36 |
|
abubakkar |
just a sidenote, "module" is just a keyword within module-info.java, we can use "module" like for variable, methods, etc in all other places. |
| 17:36 |
|
abubakkar |
correct me if wrong |
| 17:38 |
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| 17:39 |
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sjmaple |
correct |
| 17:39 |
|
sjmaple |
otherwise it's a backwards compatibility issue |
| 17:40 |
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abubakkar |
ok, thanks simon, should developers still be aware not to use it (any plans for future releases to make it keyword for java files other than module-info?) |
| 17:41 |
|
mani1 |
A mixed bag of features for different subset of the developer communities. Different developers or teams will find different things useful in Java 9. Greenfield projects will benefit starting with Java 9, rather than migrating from older versions to Java 9. |
| 17:50 |
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| 17:52 |
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| 17:53 |
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mani1 |
sjmaple: if possible can you mention about the hackday next weekend |
| 17:53 |
|
mani1 |
thanks |
| 17:53 |
|
sjmaple |
yup |
| 17:53 |
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mani1 |
https://www.meetup.com/virtualJUG/events/240545774/ |
| 17:54 |
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mauricedchateau |
@sjmaple I added that on our closing slide already ;-) |
| 17:54 |
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sjmaple |
you rock, @mauricedchateau :) |
| 17:54 |
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mani1 |
Thanks mauricedchateau |
| 17:54 |
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| 18:05 |
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| 18:05 |
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tjololo |
aw, I'm busy that Saturday:( |
| 18:07 |
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tjololo |
That makes me a sad panda, but will definetly have my own hackday as soon as possible:) |
| 18:07 |
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sjmaple |
it will all be recorded :) |
| 18:08 |
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tjololo |
expected nothing less from vJUG:) |
| 18:08 |
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christopwner |
thanks all! |
| 18:08 |
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tjololo |
Thanks for a great session |
| 18:10 |
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