Java 11 OMG

@HendrikEbbers
Karakun DevHub_
dev.karakun.com

@HendrikEbbers
OMG!!!!!!
Java 11

Karakun DevHub_
@HendrikEbbersdev.karakun.com
About me
• Karakun Co-Founder
• Lead of JUG Dortmund
• JSR EG member
• JavaOne Rockstar, Java Champion
• JavaLand Programm Chair

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About me

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The current state
• Starting with Java 11 all the new changes in the
Java ecosystem will aﬀect developers
• Mostly no-one cared about Java 9 or 10
• With 11 mostly all developers need to take action

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The current state
• Before we have a deeper look at the new changes
we should have a look at the history of Java
• Some of the "new" stuﬀ is already part of Java
since years
• Some decisions done for a decade aﬀect us now

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Let's go back to the 90th
• "Oak" (Object Application Kernel) / "The Green
Project" was developed in 1992
• This project evolved to Java in 1995
• The Duke was already the 
mascot for the 
Green Project

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The ﬁrst years
• Java 1 - Java 6 were released at SUN
• Java 1 was released 1996
• Java 6 was released 2006
• In 1998 the JCP (Java Community  
Project) was formed

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The takeover
• In 2009 SUN was bought by Oracle
• The Java community was really  
afraid about this move
• Mostly no-one associated Oracle with  
open source

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The last years
• Oracle managed to provide 
major updates of Java
• Continued to evolve Java by the JCP
• Not everything is perfect but much 
better than it was expected

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Java in a nutshell
Standard APIs
Tools
JVM

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The JVM
• The "heart" of the Java platform
• Deﬁnition of Java language features
• Deﬁnition of Java runtime
• Since 2000 just-in-time-compilation (HotSpot)

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The standard APIs
• Java Class Library (JCL) is a set of dynamically
loadable libraries
• Will be called at runtime
• Almost entirely written in Java (some JNI calls to
hardware & OS)

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The standard APIs
• Since Java 9 the standard APIs are separated in
several modules java.se
java.sql.rowset
java.sql
java.xml
java.base
java.loggingjava.instrument java.datatransfer java.scripting
java.prefs
java.desktop
java.xml.crypto
java.compiler
java.rmi java.naming
java.security.sasl
java.management java.security.jgss

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The (evil) private APIs
• Java contains some private Java APIs
• This APIs should not be used in framework /
application code
• Private APIs can be changed at anytime

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The (evil) private APIs
• Some rules about private APIs
• Do not use anything besides the java.* package
• Swing and Graphics2D is located in the javax.*
package
• JavaFX is located in the javafx.* package

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The tools
• Each Java distribution contains a large set of tools
• Some are part of OpenJDK
• Some are vendor specifc

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The tools
• Basic tools like the "java" or "javac" command are
part of each JDK distribution
• Oracle added several tools to its Java distribution
that are not part of OpenJDK
• All this tools were developed closed source at
Oracle

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The tools
• A good example is "Java WebStart"
• WebStart was never part of OpenJDK and
therefore was never part of OpenJDK builds
• WebStart was only delivered with Oracle JDK
builds

@HendrikEbbers
A commercial break -

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The OpenJDK
• Most of you will already heard that Java is open
source
• The open source code of Java can be found in the
OpenJDK
• Currently quite old infrastructure

@HendrikEbbers
The new release train

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The classical Java releases
• Up until Java 8 we had a ﬂexible release train for
Java
• A new major version was released "when it's
done"
• This ended in delays and a a big bundle of new
features per release

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The classical Java releases
• A version was available for several years
• Normally a version received updates even after
the next version was released
• Commercial LTS support was provided by Oracle
for legacy projects

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Oracle Java roadmap
2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
Java 6
Java 7
Java 8
Free

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Oracle Java roadmap
2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
Java 6
Java 7
Java 8
Free
Commercial

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• Last year Oracle announced new release train
• More ﬂexible with ﬁxed release dates
• A feature will be released "when it's done"
• Shorter lifetime of Java versions

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Java 9
Java 10
Java 11
Java 12
Java 13
Java 14
Java 15
2018 2019 2020
Java 8
Basic version
LTS version

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Java 9
Java 10
Java 11
Java 12
Java 13
Java 14
Java 15
2018 2019 2020
Java 8
Free
Commercial

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The new release train @ Oracle
• Starting with Java 11 Oracle provides 2 Java builds
• Oracle JDK is the commercial distribution
• Oracle OpenJDK builds still provided under GPL
with classpath exception

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The new release train @ Oracle
Java 9
Java 10
Java 11
Java 12
Java 13
Java 14
Java 15
2018 2019 2020
Java 8
Free
Commercial
Not Free in Prod

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• Next to the new timeline the new release model
added some additional points
• Deprecated code was removed from Java
• @Deprecated has additional information

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A value of true indicates intent to
remove the annotated program
element in a future version.
@Deprecated(forRemoval = true)

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• Several APIs were already removed between Java
8 and Java 11
• CORBA
• JAXB
• Java Enterprise Annotations

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• Since Java will become more ﬂexibel the users of
Java need to become more ﬂexible, too
• Based on the changes dependencies and
application code need to be checked for a new
version
• Updates should be done more often

@HendrikEbbers
Commercial support

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Commercial support
• Several companies offer commercial support for
Java
• Normally this contains LTS versions of specific
Java versions
• All companies share the same workflow

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OpenJDK workﬂow
OpenJDK
New feature
Security ﬁx

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8
9
OpenJDK
New feature
Security ﬁx
OpenJDK workﬂow

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8
9
OpenJDK
New feature
Security ﬁx
Public (free)
lifetime of Java 8
OpenJDK workﬂow

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8
9
Oracle
Vendor B
Vendor A
OpenJDK
New feature
Security ﬁx
OpenJDK workﬂow

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8
9
Oracle
Vendor B
Vendor A
OpenJDK
Commercial
LTS support
for Java 8
New feature
Security ﬁx
OpenJDK workﬂow

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• Vendors work in private forks for
versions with commercial support
• Security ﬁxes will be merged in
the fork
OpenJDK workﬂow

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the fork
migrated
OpenJDK workﬂow

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the fork
• Customer speciﬁc changes will be
added to the fork
migrated
OpenJDK workﬂow

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Vendor C
Vendor B
Vendor A
Specific customer fixes
Migrated security fix
OpenJDK
End of life
End of life
OpenJDK workflow

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• All companies have the same workflow but the
concrete versions will differ more an more
• Maybe security 
fixes can be  
handled in an open 
branch in future
OpenJDK workflow

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• Next to this the models for commercial support are
diﬀerent
• It really makes  
sense to have a  
deeper look at the 
price models 
OpenJDK workﬂow

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Oracle commercial support
Processor count Monthly price per processor
1-99 $25.00
100-249 $23.75
250-499 $22.50
500-999 $20.00
1.000-2.999 $17.50
3.000-9.999 $15.00
10.000-19.999 $12.50
20.000+ Oracle must be contacted

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Azul commercial support
Systems Price / year (Standard) Price / year (Premium)
1-25 $12.000 Not available
16-100 $28.750 $34.500
101-1000 $86.250 $103.500
unlimited $258.750 $310.500

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Bellsoft commercial support
Systems Price / year
1-50 $20.000
51-500 $70.000
500+ Bellsoft must be contacted

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Some calculations
• Let's assume we have 10 servers
• Each server has 4 CPUs
Oracle
Azul
Bellsoft
$10.000 $20.000

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Some calculations
• Let's assume we have 100 servers
Oracle
Azul
Bellsoft
$50.000 $100.000

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Some calculations
• Let's assume we have 1.000 servers
Oracle
Azul
Bellsoft
$500.000 $1.000.000
?

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Some calculations
• Let's assume we have 5.000 servers
Oracle
Azul
Bellsoft
$2.000.000 $4.000.000
?

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Commercial support
• All this support models are made for Java on the
server
• This works ﬁne for classic mainframe applications
• Several models work ﬁne for cloud computing
• No price model is made for Java on the client

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Oracle commercial support
User client machines Monthly price per user / client machine
1-999 $2.50
1,000-2,999 $2.00
3.000-9.999 $1.75
10.000-19.999 $1.50
20.000-49.999 $1.25
50.000+ Oracle must be contacted

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Commercial support
• Next to Oracle we currently try to create a price
model for commercial support together with
Bellsoft
• Good alternative against the price model of Oracle

@HendrikEbbers
Amazon Corretto

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Amazon Corretto
• Amazon announced its own JDK distribution some
weeks ago at Devoxx
• Really high visibility 
since James Gosling 
did the announcement

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Amazon Corretto
• On the oﬃcial page Amazon describes Corretto as
No-cost, multiplatform,
production-ready distribution of
OpenJDK

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Amazon Corretto

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Amazon Corretto
"Caﬀè corretto, an Italian beverage, consists of a shot of espresso with a
small amount of liquor, usually grappa, and sometimes sambuca or
brandy."
Wikipedia

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Amazon Corretto
• Java 8 builds will be supported till 2023 (LTS)
• Java 11 builds will be supported till 2024 (LTS)
• LTS build will contain security ﬁxes
• A new version will be released each quarter
• No commercial support options

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Amazon Corretto
• Currently a Java 8 based preview build can be
downloaded
• Downloads for Mac, Linux & Windows (all 64bit)
• Downloads contain installer instead of basic TAR/
ZIP ﬁle

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Amazon Corretto
• Java 8 build contains JavaFX
• Java 8 build contains no WebStart

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Amazon Corretto
Red Hat
SAP
Bellsoft
IBM
Amazon
Azul

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AdoptOpenJDK
• Community based project
• Provides OpenJDK based builds
• 100% open source (even the builds)
• Sponsored by several companies

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AdoptOpenJDK
• Currently support for open source Java versions
• Security ﬁx migration is not open source until now
• Goal is to provide free LTS versions for Java 11
• In contact with several companies

@HendrikEbbers
Update your app
from 8 to 11

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A lot of changes
• Public API was removed (CORBA, JAXB)
• Java modules
• Some nice new API

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Dperecated / private APIs
• Does your code compile?
• Check your code for usage of private APIs
• Check all dependencies (Issue-Tracker?)

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Moduls
• Convert your project to modules
• Does your dependencies deﬁned as modules?
• Is it planed / can you help
• Unnamed model
• automatic model

@HendrikEbbers
Karakun supports you

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• Karakun does not oﬀer JDK
support
• Currently plan to provide a
Java on Desktop support pack
together with Bellsoft

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• Karakun tries to recreate WebStart as an open source
product
• We oﬀer trainings and workshops for Java migration
(8-11), the new release train
• We will inform you about all aspects of this topic at
https://dev.karakun.com

Java 11 OMG

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Java 11 OMG