Choosing the Right Java Version & Strategy

With Chandra Guntur

Transcript

1. @CGuntur
   @JeanneBoyarsky
   Choosing the Right
   Java Vendor & Strategy
   Jeanne Boyarsky & Chandra Guntur
   
   Oracle Code One (9/19/19)
   
   DEV1969
   
   speakerdeck.com/boyarsky

   speakerdeck.com/cguntur
   1
   

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2. @CGuntur
   @JeanneBoyarsky
   About Us
   • 3 Java 8 cert books
   • Java 11 cert books coming soon
   • CodeRanch moderator
   2
   • JCP EC rep for BNY Mellon
   • Contributor to eclipse-collections
   • Code Katas
   • Java Champions
   • Combined 35 years Java development
   • Leaders of NYJavaSIG
   • Blog & Tweet regularly
   

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3. @CGuntur
   @JeanneBoyarsky
   Thursday Recommendations
   3
   Time Title Speaker(s)
   11:15-12:00
   JVM Comparison: Benchmark
   Performance of Different JDK/
   JVM Combos
   Donald Raab &
   Chandra Guntur
   10:00-10:45 Do it yourself collections Nikhil Nanivadekar
   12:15-1:00
   Making Java a First Class
   Citizen with ML
   Moderated by Frank Greco

   with 

   IBM, Oracle, Amazon & Azul
   3:15-4:00
   Java 13: Shaping the Future of
   Java, Faster
   Sharat Chander &
   Aurelio Garcia-Riberyo
   

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4. @CGuntur
   @JeanneBoyarsky 4
   JAVA 8 JAVA 11
   . . .
   

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5. @CGuntur
   @JeanneBoyarsky
   Agenda
   • History/Evolution
   
   • Release cycles
   
   • Support
   
   • Java Distros
   
   • Our favorite new features
   5
   

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6. @CGuntur
   @JeanneBoyarsky
   History
   6
   Java 8
   2014
   Hi Oracle
   2010
   Java 7
   2011
   Til Java 6
   1996-2006
   Java 9
   2017
   

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7. @CGuntur
   @JeanneBoyarsky
   Java School Report Card
   Features
   Developer Community
   A+
   B
   Predictability of Release
   Frequency of Release
   F
   D
   < 2014
   

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8. @CGuntur
   @JeanneBoyarsky
   JDK School Report Card
   Polyglot Programming
   Scalability & Performance
   B
   A
   Predictability of Release
   Frequency of Release
   F
   D
   2014-2018
   

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9. @CGuntur
   @JeanneBoyarsky
   With New Release Model
   Agile
   Developer Community
   A+
   A
   Predictability of Release
   Frequency of Release
   A
   A
   2019+
   

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10. @CGuntur
    @JeanneBoyarsky
    Agenda
    • History/Evolution
    
    • Release cycles
    • Support
    
    • Java Distros
    
    • Our favorite new features
    10
    

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11. @CGuntur
    @JeanneBoyarsky
    OpenJDK Release Cadence
    11
    March
    2018
    Sept
    2018
    March
    2019
    Sept
    2019
    March
    2020
    Sept
    2020
    March
    2021
    Sept
    2021
    Java 10 Java 12 Java 13 Java 14 Java 15 Java 16
    Java 11 Java 17
    6 months
    18 months (3 years)
    

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12. @CGuntur
    @JeanneBoyarsky
    OpenJDK 11 Stewardship
    12
    Oracle
    Red Hat
    Sept
    2018
    March
    2019
    Sept
    2019
    March
    2020
    Java 12 Java 13
    Java 11
    Java 11
    

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13. @CGuntur
    @JeanneBoyarsky
    Oracle Java Release Support
    13
    Sept
    2018
    March
    2019
    Sept
    2019
    March
    2020
    Java 11
    Open JDK
    (Reference
    Implementation)
    Oracle JDK
    (Standard
    Implementation)
    Java 11
    Java 12 Java 13
    Sept
    2021
    Java 12 Java 13
    

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14. @CGuntur
    @JeanneBoyarsky
    LTS JDK Releases
    14
    March
    2018
    Sept
    2018
    March
    2019
    Sept
    2019
    March
    2020
    Sept
    2020
    March
    2021
    Sept
    2021
    Java 11 Java 17
    6 months 18 months (3 years)
    

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15. @CGuntur
    @JeanneBoyarsky
    Quiz Time
    15
    

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16. @CGuntur
    @JeanneBoyarsky
    Quiz #1
    Once Java 13 comes out, what does Oracle issue patches for?
    16
    Oracle JDK 11
    
    OpenJDK 13
    
    Oracle JDK 13
    

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17. @CGuntur
    @JeanneBoyarsky
    Quiz #2
    How long will Oracle issue Java 13 patches?
    17
    6 months
    

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18. @CGuntur
    @JeanneBoyarsky
    Quiz #3
    What is the next LTS version after Java 11?
    18
    Java 17
    

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19. @CGuntur
    @JeanneBoyarsky
    Quiz #4
    How long can Java 8 be used in production for free?
    19
    Forever
    

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20. @CGuntur
    @JeanneBoyarsky
    Agenda
    • History/Evolution
    
    • Release cycles
    
    • Support
    
    • Java Distros
    
    • Our favorite new features
    20
    

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21. @CGuntur
    @JeanneBoyarsky
    Java is Still Free
    • Oracle JDK - Personal use under OTN
    
    • OpenJDK - Reference Implementation
    
    • Many vendors under GPL w/CPE
    
    When you have 20-30 minutes:
    21
    Free
    https://medium.com/@javachampions/java-is-still-free-2-0-0-6b9aa8d6d244
    

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22. @CGuntur
    @JeanneBoyarsky
    What is Support?
    22
    Patches/Updates Ask a Question
    

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23. @CGuntur
    @JeanneBoyarsky
    LTS vs MTS
    23
    LTS (Long Term
    Support)
    MTS (Medium Term
    Support)
    Java Versions Java 8, 11, 17 …
    Java 13, 15 

    between Java 11 & 17
    Vendors Many (including Azul) Azul (Enterprise)
    Support length 8+ years
    Supported for 18
    months after latest LTS.
    

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24. @CGuntur
    @JeanneBoyarsky
    Oracle Support
    24
    Non-commercial Enterprise
    OTN Support
    Premier Support
    Extended Support
    Sustaining Support
    

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25. @CGuntur
    @JeanneBoyarsky
    Oracle Support
    25
    Support Updates/Patches
    OTN Support No at-will
    Premier Support Yes 5 years
    Extended Support Yes 8+ years
    Sustaining Support Yes Indefinitely
    

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26. @CGuntur
    @JeanneBoyarsky
    Notable 3 Cloud Vendors
    26
    AdoptOpenJDK ?
    

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27. @CGuntur
    @JeanneBoyarsky
    Quiz Time
    27
    

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28. @CGuntur
    @JeanneBoyarsky
    Quiz
    Can a developer expect support for a OTN download?
    28
    No
    

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29. @CGuntur
    @JeanneBoyarsky
    Agenda
    • History/Evolution
    
    • Release cycles
    
    • Support
    
    • Java Distros
    
    • Our favorite new features
    29
    

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30. @CGuntur
    @JeanneBoyarsky 30
    AdoptOpenJDK
    Versions
    Supported By IBM, jClarity (Microsoft?) & several others
    Support Model
    LTS Support for 8 until Sep. 2023
    LTS Support for 11 until Sep. 2022
    Compatibility Test
    Update Policy Quarterly
    AdoptOpenJDK
    12 + every 6 months
    8 11
    AQA Compliant
    https://adoptopenjdk.net/
    

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31. @CGuntur
    @JeanneBoyarsky 31
    Amazon Corretto
    Versions
    Supported By Amazon
    Support Model
    LTS Support for 8 until Jun. 2023
    LTS Support for 11 until Aug. 2024
    Compatibility Test
    Update Policy Quarterly
    Amazon Corretto
    https://aws.amazon.com/corretto/
    + future LTS
    8 11
    TCK/JCK Compliant
    

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32. @CGuntur
    @JeanneBoyarsky 32
    Azul Zulu/Zing
    Versions
    Supported By Azul
    Support Model
    LTS Support for 8 until Mar. 2025
    LTS Support for 11 until Sep. 2026
    MTS Support ($$$) 1.5 years for 2 versions after latest LTS
    Compatibility Test
    Update Policy Quarterly
    Azul Zulu & Zing
    https://www.azul.com/products/zulu-enterprise/
    TCK/JCK Compliant
    12 + every 6 months
    8 11
    

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33. @CGuntur
    @JeanneBoyarsky 33
    BellSoft Liberica
    Versions
    Supported By BellSoft
    Support Model
    LTS Support for 8 until Jan. 2026
    LTS Support for 11 until Mar. 2027
    Compatibility Test
    Update Policy Quarterly
    BellSoft Liberica
    https://bell-sw.com/
    TCK/JCK Compliant
    12 + every 6 months
    8 11
    

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34. @CGuntur
    @JeanneBoyarsky 34
    IBM JDK
    Versions
    Supported By IBM
    Support Model
    LTS Support for 8 until Apr. 2022
    LTS Support for 11 - Not Published
    Compatibility Test
    Update Policy Quarterly
    IBM JDK
    https://developer.ibm.com/javasdk/
    TCK/JCK Compliant
    12 + every 6 months
    8 11
    

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35. @CGuntur
    @JeanneBoyarsky 35
    OpenJDK
    Versions
    Supported By Oracle (for 6 months) » RedHat (for 8,11)
    Support Model - per distro provider/vendor -
    Compatibility Test
    Update Policy Quarterly
    OpenJDK
    https://openjdk.java.net/
    TCK/JCK Compliant
    12 + every 6 months
    8 11
    

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36. @CGuntur
    @JeanneBoyarsky 36
    SAPMachine
    Versions
    Supported By SAP
    Support Model
    LTS Support for 8 - No distro (started with Java 10)
    LTS Support for 11 until Sep. 2022
    LTS Support for 4 years
    Compatibility Test
    Update Policy Quarterly
    SapMachine
    https://sap.github.io/SapMachine/
    TCK/JCK Compliant
    12 + every 6 months
    8 11
    

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37. @CGuntur
    @JeanneBoyarsky 37
    Oracle JDK
    Versions
    Supported By Oracle
    Support Model
    Patches for each major version for 6 months
    Commercial support levels (Slide 25)
    Compatibility Test
    Update Policy Quarterly
    Oracle JDK
    https://www.java.com/
    TCK/JCK Compliant
    12 + every 6 months
    8 11
    

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38. @CGuntur
    @JeanneBoyarsky
    Choosing a Strategy
    38
    Pros Cons
    Stay on Java 8
    Existing skills
    Reflection easier
    Nearing end of support
    life (EOSL)
    Current release Latest features Upgrade every 6 months
    Use latest LTS
    (Java 11)
    Many of the new
    features
    Migration cost
    

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39. @CGuntur
    @JeanneBoyarsky
    Agenda
    • History/Evolution
    
    • Release cycles
    
    • Support
    
    • Java Distros
    
    • Our favorite new features
    39
    

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40. @CGuntur
    @JeanneBoyarsky
    Single-File Source-Code
    40
    $> java Unicode.java
    Compiles in memory
    Java 11
    JEP-330
    

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41. @CGuntur
    @JeanneBoyarsky
    Garbage Collection
    • Experimental ZGC (JEP 333) 

    http://openjdk.java.net/jeps/333

    • No-Op Epsilon GC (JEP 318)

    http://openjdk.java.net/jeps/318

    41
    Java 11
    

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42. @CGuntur
    @JeanneBoyarsky
    Compact Number Formatting
    42
    Java 12
    $> java --source 12 TwitterStats.java ~ 76.1K impressions & 2.01 thousand followers
    JDK-8188147
    

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43. @CGuntur
    @JeanneBoyarsky
    Switch Expressions
    43
    Java 12
    (preview)
    $> java --source 12 --enable-preview Quarter.java --> Q3
    JEP-325
    

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44. @CGuntur
    @JeanneBoyarsky
    Switch Expressions
    44
    Java 13
    (preview)
    $> java --source 13 --enable-preview Quarter.java --> Q3
    JEP-354
    

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45. @CGuntur
    @JeanneBoyarsky
    Raw String Literals
    45
    Java 13
    (preview)
    $> java --source 13 --enable-preview XmlTest.java
    JEP-326
    

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46. @CGuntur
    @JeanneBoyarsky
    Notable JVMs
    46
    Name
    Vendor/
    Maintainer
    Zulu Azul Systems
    OpenJ9 IBM
    Hotspot Oracle
    Free/Open Source
    Name
    Vendor/
    Maintainer
    Zing Azul Systems
    GraalVM Oracle
    JamaicaVM aicas
    Commercial/Proprietary
    

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47. @CGuntur
    @JeanneBoyarsky 47
    Questions?
    

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