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mani1 |
Hi all, please use this feedback form to record your issues, comments, questions http://bit.ly/J9HackDay-AJUG-feedback, all the needed links are in there |
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Muescha |
link without "," https://bitly.com/J9HackDay-AJUG-feedback |
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sjmaple |
Welcome all, we'll be starting in just a few mins |
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heapadidoo |
Howdy, did I get the time wrong, or is the Virtual Hackday starting now? |
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nonius |
i think so... |
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Gregory |
is it started? |
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heapadidoo |
not yet I believe: https://www.youtube.com/watch?v=qZCMMKnxw7M |
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Gregory |
thx..same here |
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sjmaple |
starting just shortly... |
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Koen_MSK |
There is a 6 min divert between the clock in the YouTube stream and my PC, so I think there is a delay on the connection. |
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mani1 |
Please share with your social media networks and dev communities - https://twitter.com/virtualJUG/status/898541544873046016 |
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mani1 |
I hope you have all cloned the jdk9-jigsaw git repo and installed and setup Java 9 on your local environments |
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mani1 |
We are going to be using the JDK 9 EA build 181 - Release Candidate 1 (RC1) |
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samtreb |
is it already started? |
| 14:16 |
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lacivert |
youtube video says 'waiting' :) so I think no |
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sjmaple |
just gonna start the video now :) |
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prateek_oracle |
Cool |
| 14:19 |
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heapadidoo |
! |
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prateek_oracle |
The Main slide is not up |
| 14:26 |
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samtreb |
we do not see the slides |
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lacivert |
slides please |
| 14:27 |
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eudriscabrera |
https://www.slideshare.net/neomatrix369/java-9-jigsaw-ljc-vjug-session-hackday-session |
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Gregory |
not started ? :( |
| 14:30 |
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heapadidoo |
it started |
| 14:30 |
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Sudip7 |
introduction going on... |
| 14:30 |
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ishan1 |
can you share the link here |
| 14:30 |
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ishan1 |
? |
| 14:30 |
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Sudip7 |
https://virtualjug.com/#live |
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mani1 |
https://twitter.com/virtualJUG/status/898541544873046016 - please share your thoughts, share with your communities |
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Sudip7 |
is module.info.java is similar to package.info.java? |
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eudriscabrera |
in module.info you have to define the modules dependencies |
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Sudip7 |
so can we use package.info.java after java9? |
| 14:42 |
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Sudip7 |
n where? |
| 14:42 |
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drgeb |
how does this affect inversion of control containers like CDI, Spring,Guice ? |
| 14:43 |
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mhrimaz |
javac --module-version. You samodules doesn't have version but what is this option? |
| 14:43 |
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mhrimaz |
javac --module-version. You said modules doesn't have version but what is this option? |
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mhrimaz |
@drgeb you should "open" your package for reflective access. |
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Sudip7 |
using export ... |
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rimaz |
javac --module-version. You said modules doesn't have version but what is this option? |
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ishan1 |
how do I run this programs? |
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mk |
s |
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cuent |
Sorry I'm late. What are we doing? |
| 15:05 |
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sjmaple |
Mani will talk about a lot of that after this session - but in short, yeh you need to 'open' your modules for deep reflective access |
| 15:05 |
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cuent |
gotcha! |
| 15:06 |
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Anurag |
yep |
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sjmaple |
you can open to specific modules as well so you don't open your modules to everyone |
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sjmaple |
@cuent we're currently going through session1 exercises in the github repo here: http://bit.ly/J9HackDay-repo |
| 15:10 |
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sjmaple |
@rimaz the runtime doesn't really take any notice of that module version |
| 15:10 |
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rimaz |
so what is its use cases? |
| 15:11 |
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manikmagar |
should we be using latest openjdk build 181? |
| 15:11 |
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sjmaple |
@rimaz certainly not in the dynamic linking way you'd expect - it's not akin to the way OSGi versions are used for instance |
| 15:11 |
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sjmaple |
@manikmagar yep |
| 15:11 |
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sjmaple |
@rimaz I believe it's just for user info - similar to JAR versions |
| 15:11 |
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cuent |
@sjmaple thanks! |
| 15:11 |
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rimaz |
thanks |
| 15:12 |
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ishan1 |
for 01_Greetings in compile.sh there is a hint [path to the compiled module**] actual value is $COM_GREETINGS_FOLDER. why underscores and dollar? |
| 15:12 |
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| 15:12 |
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lacivert |
for mac users; brew jdk9 is ok for this too? |
| 15:13 |
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sjmaple |
@lacivert should be, yep |
| 15:14 |
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pdurbin |
It's so quiet. :) |
| 15:14 |
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mani1 |
Can everyone open and edit this feedback form - http://bit.ly/J9HackDay-AJUG-feedback, can you please add your feedback here |
| 15:14 |
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cuent |
dead link |
| 15:14 |
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cuent |
@mani1 |
| 15:15 |
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lacivert |
just delete the last comma please |
| 15:15 |
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mani1 |
Any issues or problems, questions can be added there |
| 15:15 |
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| 15:15 |
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mani1 |
Once again the link is http://bit.ly/J9HackDay-AJUG-feedback (just click on the link) |
| 15:15 |
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lacivert |
just delete the last comma pleaseit is |
| 15:15 |
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lacivert |
sorry |
| 15:15 |
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sjmaple |
@ishan1 where do you see $COM_GREETINGS_FOLDER? |
| 15:16 |
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ishan1 |
in master branch's compile.sh |
| 15:16 |
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ishan1 |
sorry solution |
| 15:16 |
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ishan1 |
branch |
| 15:16 |
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lacivert |
the feedback is about this live session? |
| 15:16 |
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ishan1 |
@sjmaple in solution branch |
| 15:17 |
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ishan1 |
@sjmaple in solution branch's compile.sh |
| 15:17 |
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sjmaple |
ahh, in the compile.sh... yep, found it :) |
| 15:17 |
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sjmaple |
that's just a bash variable |
| 15:17 |
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sjmaple |
underscores are used just for readability of the var names |
| 15:17 |
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| 15:17 |
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mani1 |
Please look at all the files in an exercise before getting started with it |
| 15:18 |
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sjmaple |
$ is used to dereference a variable |
| 15:18 |
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zcube |
Oops i am too late ( |
| 15:18 |
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Sudip7 |
master or excersise-solution anything would be fine?? |
| 15:18 |
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sjmaple |
whatever you feel you want to do, @Sudip7 |
| 15:18 |
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Sudip7 |
ok |
| 15:18 |
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sjmaple |
master requires your edits to get it working, so is an exercise for you |
| 15:18 |
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Sudip7 |
I have a early access for java9 |
| 15:18 |
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Sudip7 |
is that ok? |
| 15:19 |
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sjmaple |
the solutions you can look at and run if you just want to look |
| 15:19 |
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sjmaple |
yep, build 181 is preferable, but if you have something recent it should work |
| 15:19 |
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ishan1 |
@sjmaple: got it. I should read the whole file as mani said |
| 15:20 |
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rimaz |
is there any explanation of modular development on IDEs like NetBeans or IntelliJ? |
| 15:20 |
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mani1 |
Sudip7: have a read of the README.md in the git repo, either of the options are good, all depends on what level of challenge do you want |
| 15:21 |
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Sudip7 |
https://thepasteb.in/p/zmh8o46OVp5cZ |
| 15:21 |
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Sudip7 |
should that be ok |
| 15:22 |
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sjmaple |
@rimaz I don't know if there are official docs, probs not... |
| 15:22 |
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mani1 |
rimaz: at the moment not, but we will soon be having, someone is putting together a nice one for Eclipse, see https://github.com/AdoptOpenJDK/jdk9-jigsaw/pull/111 |
| 15:22 |
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sjmaple |
I read a blog from Trisha about how to use modules with Idea |
| 15:22 |
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zcube |
Little bit lost, as I joined late. So first is the workspace setup? |
| 15:23 |
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| 15:23 |
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ishan1 |
In 01_Greetings there is a folder name "com.greetings" and a module.java which has module name "com.greetings". So these both names should be exactly same? |
| 15:23 |
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sjmaple |
https://blog.jetbrains.com/idea/2017/03/support-for-java-9-modules-in-intellij-idea-2017-1/ |
| 15:23 |
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mani1 |
rimaz: have a look at https://github.com/AdoptOpenJDK/jdk9-jigsaw/blob/master/Java-9-Resources.md, you should find useful posts for that |
| 15:23 |
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sjmaple |
@ishan1 they actually don't have to be, which makes it a bit confusing... |
| 15:23 |
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sjmaple |
but the declaration in module.info will be the module name used |
| 15:24 |
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ishan1 |
@sjmaple I will try once making it different |
| 15:24 |
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mani1 |
zcube: yes, please setup via git repo instructions, all links are here http://bit.ly/J9HackDay-AJUG-feedback |
| 15:24 |
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sjmaple |
@zcube yep, setup instructions are here https://github.com/AdoptOpenJDK/jdk9-jigsaw |
| 15:24 |
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mani1 |
ishan1: try making them different and see if the Javac compiler complains |
| 15:25 |
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sjmaple |
then start session 1 exercises |
| 15:25 |
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zcube |
@mani1 @sjmaple I had completed setup last night |
| 15:25 |
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sjmaple |
@ishan1 yeh, do it! :) |
| 15:25 |
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mani1 |
zcube: start from first exercise https://github.com/AdoptOpenJDK/jdk9-jigsaw#examples-covered |
| 15:26 |
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anjaiahspr |
hii |
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ishan1 |
@sjmaple while running it is giving me an error "java.lang.module.FindException: Two versions of module com.greetings found in mods (com.greetings1 and com.greetings)" |
| 15:27 |
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ishan1 |
I have two modules in the mod folder |
| 15:28 |
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mani1 |
ishan1: which exercise? Did you try to change the name of the module / folder name? |
| 15:29 |
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ishan1 |
01_Greetings |
| 15:30 |
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ishan1 |
@mani It is working now. |
| 15:30 |
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ishan1 |
@mani1 It is working now. |
| 15:31 |
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mani1 |
so what went wrong? did you not compile it? |
| 15:31 |
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ishan1 |
"java.lang.module.FindException: Two versions of module com.greetings found in mods (com.greetings1 and com.greetings)" These error comes when the modules are compiled with same name |
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ishan1 |
@mani1 I compiled it but didnt remove the older module from the Mod folder so it got confused because of same module name |
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mani1 |
i see, deleting the mod folder, maybe we should delete it via our script - create a PR if you like, but then you will have to amend all the exercises with this change - upto you |
| 15:33 |
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mani1 |
thanks for feedback |
| 15:33 |
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ishan1 |
@mani1 : I am very new to git. So dont know how to create a PR and what to do after that. |
| 15:35 |
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cuent |
Ok, I installed jdk 9 |
| 15:36 |
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cuent |
What's next? |
| 15:36 |
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Sudip7 |
@ishan1, fork the repo, add ur code and push it to ur repo |
| 15:36 |
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Sudip7 |
if u like it to be added to original repo send a PR |
| 15:37 |
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ishan1 |
@Sudip7 thanks man. I am trying |
| 15:38 |
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Sudip7 |
try to find git commands, google it |
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| 15:39 |
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Sudip7 |
here are some commands which may be handy |
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Sudip7 |
git stash, git reset --hard, git log |
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zcube |
excercise1 01_Greeting with Intellij is done. |
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zcube |
what shall be next? |
| 15:40 |
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mani1 |
cuent: start working on the exercises at https://github.com/AdoptOpenJDK/jdk9-jigsaw#examples-covered |
| 15:40 |
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mani1 |
zcube: continue with the exercises look at https://github.com/AdoptOpenJDK/jdk9-jigsaw#examples-covered for the list |
| 15:41 |
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mani1 |
there are plenty in this section |
| 15:42 |
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zcube |
@mani1 Thanks, Using intellij is fine right? or I need to follow the scripts provided? |
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Sudip7 |
@mani1 are we storing the IRC logs also?? |
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mani1 |
You can use intellij, but still need to run the scripts |
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Sudip7 |
that may be handy if someone try to do the demo latter |
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mani1 |
sjmaple: Sudip7 is asking if we store the IRC logs |
| 15:43 |
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cuent |
@mani1 Thanks, I'm trying greetings |
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mani1 |
zcube: you cant really compile and build or even run the app via intellij at the moment - instructions should follow for future events |
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manikmagar |
Ok, I see run.sh printing 'Greetings!' .. :) |
| 15:45 |
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Sudip7 |
@mani1, can u please share the feedback form again |
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manikmagar |
what next |
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manikmagar |
should I commit changes to my cloned repo? |
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Sudip7 |
wht things we can do with it? |
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mani1 |
manikmagar: continue with the exercises look at https://github.com/AdoptOpenJDK/jdk9-jigsaw#examples-covered for the list |
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mani1 |
(16:41:06) mani: there are plenty in this section |
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mani1 |
no need to push changes - they are exercises to solve |
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mani1 |
please setup via git repo instructions, all links are here http://bit.ly/J9HackDay-AJUG-feedback <=== feedback form |
| 15:47 |
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mani1 |
manikmagar: you can commit to your own repo but the solutions are already there in the exercise-solutions branch |
| 15:47 |
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manikmagar |
ok, got it. Thanks! I will do the next ones. |
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manikmagar |
btw, just using Terminal/console and ATOM editor, no IDE! It's fun! |
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Ravi |
To export the packages do we need to list each and every package name or specifying top level package name should be fine? |
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Koen_MSK |
was the link to the solution? |
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Alejandro |
javac -d mods/com.greetings src/com.greetings/module-info.java src/com.greetings/com/greetings/Main.java |
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sjmaple |
the solutions are in a different branch |
| 16:09 |
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sjmaple |
examples-solution or something like that |
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Koen_MSK |
thanks |
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Alejandro |
java --module-path mods -m com.greetings/com.greetings.Main |
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mani1 |
Can everyone re-update their local git repo from http://bit.ly/J9HackDay-repo - i have posted updates and fixes |
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ishan1 |
https://thepasteb.in/p/pghQ3A6XpxphR |
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Kirant |
Not sure what I am doing wrong but I am getting this error “error: in multi-module mode, the output directory cannot be an exploded module: mods” when compiling 03_MultiModuleCompilation |
| 16:32 |
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ishan1 |
what is mlib? |
| 16:32 |
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ishan1 |
where is this directory created? |
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Saif_Dallas |
Hello from Dallas, Thanks y'all for sharing your knowledge with us. |
| 17:06 |
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ishan1 |
Getting error while running 04_Packaging |
| 17:07 |
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ishan1 |
java.lang.module.FindException: Module com.greetings not found |
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| 17:11 |
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Prateek |
IMO, we should rather compile/run the modules directly rather than use the sh files. That help you understand lots of thing. One can follow http://openjdk.java.net/projects/jigsaw/quick-start |
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mani1 |
ishan1: is your issue resolved? did you delete the mod folder? |
| 17:34 |
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ishan1 |
yes I did it. thanks. |
| 17:34 |
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mani1 |
Prateek: its good to also read the scripts and see how things can be done, not everyone knows first hand what to do. http://openjdk.java.net/projects/jigsaw/quick-start might not be up-to-daye |
| 17:34 |
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mani1 |
*up-to-date |
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mani1 |
Kirant: did you delete the mod folder we all have had this issue, best to delete the mods folder in the script |
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Kirant |
yes it works now ..thanks |
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sjmaple |
https://www.irccloud.com/pastebin/6m8LTqHx/Switch%20Java%20versions |
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Prateek |
@mani1: Agree |
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mani1 |
Also why we created this repo to support all the developers and use info from everywhere but test it our ourselves in different ways. |
| 17:46 |
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mani1 |
For developers of all levels, so feel free to not use the script and go deep dive or put yourself in the deep-end ;) |
| 17:48 |
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mani1 |
cuent: have you been able to resolve your queries, you have posted one in the doc - is it still an issue? |
| 17:51 |
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cuent |
No, it's compiling without --module-source-path flag. What's that flag for? |
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| 18:00 |
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eudriscabrera |
any idea with this issue ? |
| 18:01 |
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eudriscabrera |
Error: module java.base not found |
| 18:01 |
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eudriscabrera |
_ |
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mani1 |
eudriscabrera: can you pls give more info what you mean? Whats the actual action |
| 18:04 |
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devorbitus |
If you replace the above alias with this one you will see the version 9 jdk as well https://www.irccloud.com/pastebin/OnHbAAbp/ |
| 18:05 |
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mani1 |
cuent: its to locate the folder where the source files are, you need to use the script or look at the scripts to see what happening |
| 18:05 |
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mani1 |
cuent: which branch are you on? check the solution in the exercise-solutions branch |
| 18:05 |
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mani1 |
and see if that works for you |
| 18:06 |
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eudriscabrera |
man1 I'm working with the 01_jlink exercise |
| 18:08 |
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eudriscabrera |
while execute the link.sh, it failed with the following error. java.base module not found |
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cuent |
it's working thanks @mani1 |
| 18:15 |
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mani1 |
eudriscabrera: can you please describe everything you can in the feedback document, its not possible to attempt to resolve issues without knowing more details - http://bit.ly/J9HackDay-AJUG-feedback |
| 18:26 |
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mani1 |
Can you please post your issues in the Feedback doc and remove them from http://bit.ly/J9HackDay-AJUG-feedback |
| 18:27 |
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mani1 |
remove them if the issues have been resolved |
| 18:27 |
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mani1 |
eudriscabrera: http://bit.ly/J9HackDay-AJUG-feedback - can you please explain your issue here, thanks |
| 18:28 |
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mani1 |
JShell exercise: https://github.com/AdoptOpenJDK/jdk9-jigsaw/tree/master/session-3-jshell |
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mani1 |
Refactoring exercises: https://github.com/AdoptOpenJDK/jdk9-jigsaw/blob/master/README.md#exercises--examples-covered (Session 3: Refactoring/migration sessions) |
| 18:36 |
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eudriscabrera |
@mani1 after setting the JAVA_HOME in the *.sh files , everything works. I already have java 9 in the PATH, but also need the JAVA_HOME variable. |
| 18:36 |
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eudriscabrera |
Thanks |
| 18:37 |
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mani1 |
eudriscabrera: the setup instructions in the http://bit.ly/J9HackDay-repo link, were you shared this link before? |
| 18:40 |
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eudriscabrera |
yes, but I'm already doing some researches with Java 9 before, that's why I skipped the setting instructions |
| 18:41 |
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eudriscabrera |
I didn't have any issues with the previous exercises |
| 18:41 |
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eudriscabrera |
thanks for your help man1 |
| 18:42 |
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eudriscabrera |
mani1 |
| 18:49 |
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mani1 |
So it was a pure case of not having Java 9 setup - thnx |
| 18:50 |
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mani1 |
I was a bit confused since how it worked for you with the other exercises |
| 18:57 |
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eudriscabrera |
any resources (exercises, demo, etc) about java 9 reactive streams ? |
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mani1 |
eudriscabrera: have a look at the readme of the git repo, it points to the Java 9 resources which has links to reactive |
| 19:14 |
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mani1 |
cuent: your email address is missing in the feedback form for one of the issues your raised - please also let us know if its resolved |
| 19:21 |
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sjmaple |
http://thejavaspecialists.com/tutorials/008-JShell-new-Java-9-REPL-for-Interactive-Hacking.html |
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Koen_MSK |
Hey, thanks it was fantastic !!!!! |
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mani1 |
cuent: can you please leave your contact details in http://bit.ly/J9HackDay-AJUG-feedback against the issue you raised pls - also answer the pending question as we are not able to ascertain if you still have an issue with the exercises |
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pdurbin |
You're still going? Did I hear right that today's session is going for six hours? :) |
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pdurbin |
Oh, I see. You're apparently done but the recording is about five and a half hours long: https://www.youtube.com/watch?v=qZCMMKnxw7M |
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