26 Java Years

#31 ～オープンソースプロジェクトを支える言語たち～
2021-08/25

Transcript

1. Shin Tanimoto
   26 Java Years
   
   
   - ͜Ε͕ࠓͷJavaͩʂ
   #31 ʙΦʔϓϯιʔεϓϩδΣΫτΛࢧ͑Δݴޠͨͪʙ
   

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2. ୩ຊ ৺ (Shin Tanimoto)
   
   
   ೔ຊJavaϢʔβʔάϧʔϓ Ϧʔμʔʢ୅දʣ
   
   
   Java Champion / Oracle Groundbreaker Ambassador
   
   
   Everforth / Acroquest Technologyͷ2ࣾͰಇ͘ΤϯδχΞ
   
   
   ෭ۀʹͯ֎෦ސ໰΍ʮϨϯλϧ͢΂ΔਓʯͳͲ
   
   
   ੜ͖͕͍͸BABYMETALͷϥΠϒࢀઓ
   ࣗݾ঺հ
   2
   Twitter : @cero_t
   ஶॻ : Javaຊ֨ೖ໳
   

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3. ೔ຊJavaϢʔβʔάϧʔϓ (JJUG)
   
   
   2007೥4݄ʹൃ଍ͨ͠JavaͷϢʔβʔձ
   
   
   ౦ژΛத৺ͱͨ͠ษڧձ΍ΧϯϑΝϨϯεͷ։࠵ʢݱࡏ͸ΦϯϥΠϯத৺ʣ
   
   
   ߨࢣ೿ݣ΍ग़ுΠϕϯτͳͲɺ೔ຊ֤஍ͷJavaίϛϡχςΟͱڠྗ͍ͯ͠Δ
   
   
   ن໛
   
   
   ձһ਺ 10,000໊Ҏ্
   
   
   ݄ྫͷษڧձʹ͸਺ඦ໊ɺ೥2ճͷΧϯϑΝϨϯεʹ͸1,000໊Ҏ্͕ࢀՃ
   JavaϢʔβʔάϧʔϓ
   3
   

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4. Javaʁ
   

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5. ݻ͍
   
   
   ݹ͍
   
   
   μα͍
   ͑ɺJavaʁ
   5
   

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6. ੩తܕ෇͚ݴޠ
   
   
   ΦϒδΣΫτࢦ޲
   Java͸ݻ͍ʁ
   6
   

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7. ੩తܕ෇͚ݴޠ
   
   
   ίϯύΠϧ࣌νΣοΫ΍IDEͷࣗಈิ׬ͷԸܙΛड͚΍͍͢
   
   
   ΤϯλʔϓϥΠζͳͲͷେن໛ϓϩδΣΫτʹ޲͘
   
   
   ΦϒδΣΫτࢦ޲
   
   
   ۩৅ΑΓ΋ந৅Λ޷Ή
   
   
   ۀ຿΍ػೳΛ࣮ݱ͢ΔͨΊͷ࣮૷ΑΓɺͦͷຊ࣭Λߟ͑Δ͜ͱΛ޷Ήਓ͕ଟ͍
   Java͸ݻ͍ʁ
   7
   

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8. ࠷ॳͷ͓໨ݟ͔͑Β26೥ɺJDK 1.0ͷϦϦʔε͔Β25೥
   Java͸ݹ͍ʁ
   8
   

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9. ࠷ॳͷ͓໨ݟ͔͑Β26೥ɺJDK 1.0ͷϦϦʔε͔Β25೥
   
   
   Pythonઌഐͷ4ίԼ
   
   
   C++ઌੜͷ10ίԼ
   
   
   ޙํޓ׵ੑΛอͪଓ͚͍ͯΔ
   
   
   ϥΠϒϥϦͷαϙʔτͳͲআ͚͹ɺݹ͍ίʔυͰ΋͍͍ͩͨίϯύΠϧ͕௨Δ͠ಈ͘
   
   
   ৽͍͠API͕௥Ճ͞Εͯ΋ɺݹ͍API͸͍͍ͩͨͦͷ··࢒Δ
   Java͸ݹ͍ʁ
   9
   

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10. จࣈྻஔ׵ϝιου
    Java͸ݹ͍ʁ
    10
    String str = “12345-12345-12345";

    

    str.replace('1', 'x'); → "x2345-x2345-x2345"ɹ1จࣈ͚ͩࢦఆͯ͠શஔ׵

    

    str.replaceFirst("\\d+", "xyz"); → "xyz-12345-12345"ɹਖ਼نදݱͰࢦఆͯ͠1ճஔ׵

    

    str.replaceAll("\\d+", "xyz"); → "xyz-xyz-xyz"ɹਖ਼نදݱͰࢦఆͯ͠શஔ׵

    

    str.replace("123", "xyz"); → “xyz45-xyz45-xyz45"ɹจࣈྻͰࢦఆͯ͠શஔ׵
    

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11. จࣈྻஔ׵ϝιου
    
    
    str.replace(‘1’, ‘x’); → ࠷ॳ͔Β͋Δʢ1996೥ʣ
    
    
    str.replaceFirst(“\\d+”, “xyz”); → Java 1.4Ͱ௥Ճʢ2002೥ʣ
    
    
    str.replaceAll(“\\d+”, “xyz”); →Java 1.4Ͱ௥Ճʢ2002೥ʣ
    
    
    str.replace(“123”, “xyz”); → Java 1.5Ͱ௥Ճʢ2004೥ʣ
    
    
    ޙํޓ׵ੑΛอͭͨΊɺݹ͍APIΛ࡟আ͠ͳ͍
    Java͸ݹ͍ʁ
    11
    

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12. Java͸μα͍ʁ
    12
    

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13. μαͳ͍Θʂʂɹμα͍ݴ͏΍͕ͭμα͍Μ͡Όʂʂ😭
    Java͸μα͍ʁ
    13
    

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14. ؔ਺ܕͬΆ͘දهͰ͖ΔϥϜμࣜͷಋೖ͸2014೥ͱ஗Ί
    
    
    ෳ਺ͷاۀ΍ஂମͷ߹ҙʹΑͬͯ࢓༷Λࡦఆ͢ΔΦʔϓϯͳϓϩηε
    
    
    Java Community ProcessʢJCPʣ
    
    
    ࢓༷ܾఆޙɺ֤͕࣮ࣾ૷ΛఏڙʢOracleɺIBMɺAzulɺBellSoftɺSAPͳͲʣ
    
    
    ߹ҙܗ੒͕ඞཁͰ͋Γɺ·ͨޙํޓ׵ੑͷҡ࣋Λॏࢹ͢ΔͨΊɺ
    

    ৽͍͠จ๏΍ػೳͷఏڙ͸ɺଞͷݴޠʹൺ΂ͯগ͠஗ΕΔ
    
    
    ͦͷ෼ɺݎ࿚Ͱ͋ΓಛఆϕϯμͷϩοΫΠϯΛආ͚ΒΕΔ
    Java͸μα͍ʁ
    14
    

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15. Java͍͍͡ΌΜ
    15
    😊
    

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16. ؆୯ͳྺ࢙ͱ༻ޠ
    

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17. 1995೥ : Sun MicrosystemsࣾʹΑΓॳ͓൸࿐໨
    
    
    1996೥ : JDK 1.0ϦϦʔεʢJDK = Java Development Kitʣ
    
    
    2006೥ : OSSԽ
    
    
    2010೥ : Oracle͕ࣾSun MicrosystemsࣾΛങऩ
    
    
    2014೥ : Java 8ͷϦϦʔεɻؔ਺ܕ෩ͷهड़͕Ͱ͖ΔΑ͏ʹͳΓɺվΊͯ஫໨͕ू·ΔΑ͏ʹͳͬͨ
    
    
    2017೥ : Java 9ͷϦϦʔεɻҎ߱൒೥͝ͱʹ࣍όʔδϣϯΛϦϦʔε͢ΔΑ͏มߋ
    Javaͷ؆୯ͳྺ࢙
    17
    

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18. JavaVM : Java Virtual MachineɻJavaΛಈ࡞ͤ͞ΔԾ૝ϚγϯɻJVMͱ΋දه͢Δ
    
    
    Java͸࣮ߦՄೳͳόΠφϦΛ࡞ΔͷͰ͸ͳ͘ɺίϯύΠϧͨ͠ϑΝΠϧΛJavaVM্Ͱಈ࡞ͤ͞Δํࣜ
    
    
    Java SE : ͍ΘΏΔJavaຊମ
    
    
    JDK : Java Development KitɻίϯύΠϥͳͲͷ։ൃπʔϧ
    
    
    JRE : Java Runtime EnvironmentɻJavaVM΍ඪ४ϥΠϒϥϦͳͲͷ࣮ߦ؀ڥ
    
    
    ݱࡏ͸JRE୯ମͰͷఏڙ͸͞Εͳ͘ͳͬͨ
    جૅ༻ޠ
    18
    

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19. Java EEʢݱJakarta EEʣ : αʔόΞϓϦέʔγϣϯ޲͚ͷAPαʔό΍ϥΠϒϥϦ܈Λఏڙ
    
    
    Java ME : ૊ΈࠐΈ୺຤޲͚ͷJava
    
    
    JVMݴޠ : JavaVMͷ্Ͱಈ࡞͢ΔJavaͰ࣮૷͞Εͨݴޠ
    
    
    ScalaɺKotlinɺGroovyɺJRubyɺJythonͳͲ
    
    
    TCK : Technology Compatibility KitɻJavaͷޓ׵ੑΛ਍அ͢ΔπʔϧΩοτ
    
    
    ֤ࣾͷJava࣮૷͸TCKΛ௨ͬͯ͸͡ΊͯJavaͱೝఆ͞ΕΔ
    
    
    Oracleʢݩʑ͸Sun Microsystemsʣ͕ఏڙ͍ͯ͠Δ
    جૅ༻ޠ
    19
    

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20. JavaΛऔΓר͘OSS
    

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21. ΤϯλʔϓϥΠζܥͰ࢖ΘΕΔ͜ͱ͕ଟ͍ݴޠͰ͋Γͳ͕Βɺ2000೥ࠒ͔Β
    

    ։ൃ؀ڥ΍ϥΠϒϥϦɺϑϨʔϜϫʔΫͳͲʹOSSϓϩμΫτ͕੝Μʹ࢖ΘΕΔΑ͏ʹͳͬͨ
    
    
    ʢ΋ͪΖΜϓϩϓϥΠΤλϦͳϓϩμΫτ΋ͨ͘͞Μ͋ͬͨʣ
    
    
    Eclipse IDEɺStrutsɺSpringɺSeasar2ͳͲ
    
    
    ݱࡏ͸Javaࣗମ͕OSSԽ͞Εɺෳ਺ͷاۀ΍ஂମ͔ΒOSS൛ͷJDK͕ఏڙ͞Ε͍ͯΔ
    
    
    OSSΛऔΓר͘ΤίγεςϜ͕੒ख़͍ͯ͠Δݴޠͷͻͱͭͱݴ͑Δ
    Java͸OSSͱڞʹาΜͰ͖ͨݴޠ
    21
    

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22. OSSϓϩμΫτΛఏڙ͢Δ/͍ͯͨ͠ओͳஂମ
    
    
    Apache Jakarta Projectʢ1999೥-2011೥ʣ
    
    
    Eclipse Foundationʢ2002೥-ʣ
    
    
    Spring Projectʢ2004೥ࠒ-ʣ
    
    
    SeasarϑΝ΢ϯσʔγϣϯʢ2005೥-2019೥ʣ
    Java͸OSSͱڞʹาΜͰ͖ͨݴޠ
    22
    

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23. Apache Jakarta Projectʢ1999೥-2011೥ʣ
    
    
    ଟ͘ͷJavaͷOSSϓϩμΫτΛఏڙ͍ͯͨ͠ஂମɻOSSϓϩμΫτͷड͚ࡼͱ΋ݴ͑Δ
    
    
    ιʔείʔυ΍όΠφϦΛμ΢ϯϩʔυͰ͖Δ৔ॴ
    
    
    Apache TomatɺAntɺMavenɺLog4jɺStrutsɺCommonsɺLuceneͳͲ
    
    
    2000೥୅લ൒ͷJavaΤϯδχΞ͸ɺ͍͍ͩͨStrutsͰWebΞϓϦέʔγϣϯΛ࡞Γɺ
    

    Log4jͰϩάΛग़͠ɺCommonsϥΠϒϥϦΛ࢖͍ɺAntͰϏϧυ͠ɺ
    

    Tomcat্ͰՔಇ͍ͤͯͨ͞
    Apache Jakarta Project
    23
    

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24. Apache Jakarta Projectʢ1999೥-2011೥ʣ
    
    
    JavaͷOSSͷΤίγεςϜͷجૅΛ࡞ͬͨஂମͱݴ͑Δ
    
    
    2011೥ʹ໾ׂΛऴ͑ͯΫϩʔζ͞ΕɺͦΕͧΕͷϓϩμΫτ͕ಠཱͨ͠
    Apache Jakarta Project
    24
    

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25. IBM͕ࣾEclipse IDEΛOSSͱͯ͠ެ։ʢ2002೥ʣ
    
    
    2000೥୅ͷJava։ൃʹ͓͚ΔओྲྀͷIDEʢ౷߹։ൃ؀ڥʣ
    
    
    ͦΕ·Ͱ͸ΤσΟλΛ࢖͏ਓ͕ଟ͔ͬͨ
    
    
    EclipseҎޙɺྑ͘΋ѱ͘΋JavaͷIDE͸OSS͔ͭແঈͰఏڙ͞ΕΔΠϝʔδ͕ఆண
    
    
    ͳ͓ɺݱࡏ͸JetbrainsࣾͷIntelliJ IDEA͕ओྲྀ
    
    
    OSSͷίϛϡχςΟ൛ͱɺ༗ঈͷUltimate൛͕͋Δ
    Eclipse IDE
    25
    

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26. Eclipse Foundationʢ2004೥-ʣ
    
    
    ౰ॳ͸Eclipse IDEͷ؅ཧ͕໨త
    
    
    ͦͷޙɺJakarta EEɺOpenJ9ɺEclipse LinkɺEclipse CollectionsͳͲ
    

    ଞͷOSSϓϩμΫτ΋ఏڙ͢ΔΑ͏ʹͳͬͨ
    
    
    Apache Jakarta Projectͷ୅ΘΓʹOSSϓϩμΫτͷड͚ࡼͱͳ͍ͬͯΔ໘΋͋Δ
    Eclipse Foundation
    26
    

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27. Spring Projectʢ2004೥ࠒ-ʣ
    
    
    Spring FrameworkΛத৺ͱͨؔ͠࿈ϓϩμΫτͷఏڙ
    
    
    Spring Frameworkࣗମ͕ଞͷϓϩμΫτͱܨ͕Δ͜ͱΛલఏͱͨ͠࢓૊ΈΛ
    

    ఏڙ͢Δ΋ͷͰ͋ΔͨΊɺ༷ʑͳ࿈ܞϓϩμΫτ͕ੜ·Εͨ
    
    
    ݱࡏ΋Spring͕Java։ൃͷओྲྀͱͳ͍ͬͯΔʢSpring Bootʣ
    Spring Project
    27
    

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28. Spring Projectʢ2004೥ࠒ-ʣ
    
    
    ։ൃͷओମͰ͋ͬͨSpringSourceࣾ͸ɺVMWareࣾʹങऩ͞ΕɺPivotalࣾʹҠ؅͞Εɺ
    ࠶౓VMWareࣾʹങऩ͞ΕΔͳͲมભͨ͠
    
    
    Spring FrameworkΛ࠷ॳʹ࡞ͬͨRod Johnsonࢯ͸Spring ProjectΛ཭Εͯٱ͍͠
    
    
    ͦͷΑ͏ͳঢ়گͰ΋ਐԽ͠ଓ͚͍ͯΔ͜ͱ͕ɺOSSϓϩμΫτͷڧΈͷҰͭͩͱݴ͑Δ
    Spring Project
    28
    

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29. SeasarϑΝ΢ϯσʔγϣϯʢ2005೥-2019೥ʣ
    
    
    ೔ຊൃͷOSSϑϨʔϜϫʔΫSeasar2Λத৺ͱͨ͠਺ଟ͘ͷOSSϓϩμΫτΛఏڙ
    
    
    S2DaoɺS2StrtusɺS2JSFɺSAStrutsɺS2JDBCͳͲ
    
    
    2000೥୅தظͷ೔ຊͷJavaΞϓϦέʔγϣϯ։ൃͰओྲྀͱͳͬͨ
    
    
    SeasarΧϯϑΝϨϯε͸1000໊લޙͷࢀՃऀΛूΊΔҰେΠϕϯτͱͳ͍ͬͯͨ
    
    
    ༏लͳJavaΤϯδχΞ͕ͨͪू͏৔ͱͳΓɺ౰࣌ͷίϛολͨͪ͸ݱࡏͰ΋֤෼໺Ͱ׆༂͍ͯ͠Δ
    SeasarϑΝ΢ϯσʔγϣϯ
    29
    

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30. ओྲྀͱͳͬͨOSSϓϩμΫτͷػೳ͕ɺJavaͷඪ४ػೳͱͯ͠औΓࠐ·ΕΔྲྀΕ͕ੜ·Εͨ
    
    
    Spring Framework → CDIʢDIίϯςφʣ
    
    
    Hibernate → JPAʢDBΞΫηεʣ
    
    
    Scala΍KotlinͳͲͷJavaVM্Ͱಈ͘ݴޠͷػೳ → Stream APIʢؔ਺ܕ෩ͷهड़ʣ
    OSS͔Βඪ४΁
    30
    

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31. ༷ʑͳاۀ΍ஂମɺ·ͨJavaΤϯδχΞͨͪͷߩݙʹΑΓɺ
    

    JavaͷOSSΤίγεςϜ͸੒ख़͍ͯͬͨ͠
    
    
    ͍·Ͱ͸Javaͦͷ΋ͷ΋OSSԽ͞Εɺෳ਺ͷاۀ΍ஂମ͔Βఏڙ͞Ε͍ͯΔ
    
    
    ͔͢͠͠΂͕ͯॱ෩ຬൕͩͬͨΘ͚Ͱ͸ͳ͘ɺաڈʹ͸Կ౓͔େ͖ͳࣄ݅΋ى͖ͨ
    OSSͱJava
    31
    

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32. Javaք۾ͷOSSͰى͖ͨ໰୊
    

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33. Java͕OSSԽ͢Δࡍ΍ɺଞ͕ࣾఏڙ͢Δ৔߹ʹিಥ͢Δ͜ͱ΋͋ͬͨ
    
    
    աڈʹى͖ͨ໰୊
    
    
    Apache Harmonyࣄ݅
    
    
    Androidࣄ݅
    
    
    Googleૌুࣄ݅
    Javaք۾ͷOSSͰى͖ͨ໰୊
    33
    

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34. લఏͱͳΔഎܠͱͯ͠ɺJavaΛఏڙ͢ΔSun Microsystems͸
    

    ʮJavaʹΑ͘ࣅ͍ͯΔ͕ݫີʹ͸Javaͱݺ΂ͳ͍΋ͷʯ͕ʮJavaʯΛ໊৐Δ͜ͱΛڋΜͩ
    
    
    Javaͷ෼அΛ๷͙ͨΊ
    
    
    ʮWrite Once, Run AnywhereʯͷϙϦγʔΛकΔͨΊ
    Javaք۾ͷOSSͰى͖ͨ໰୊
    34
    

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35. 2006೥ɺJavaͷOSS࣮૷ͱͯ͠ʮApache Harmonyʯ͕ఏڙ͞Εͨ
    
    
    Apache License 2.0Ͱఏڙʢվมͨ͠ࡍͷιʔείʔυͷެ։ٛ຿͕ͳ͍ʣ˞Ҏ߱AL-2.0ͱදه͢Δ
    
    
    ͔͠͠౰࣌ɺSun Microsystems͸Apache Harmony΁ͷTCKͷఏڙΛڋ൱
    
    
    TCKΛ௨͍ͯ͠ͳ͍࣮૷͸JavaͱೝΊΒΕͳ͍
    
    
    Apache Harmony͸૊ΈࠐΈ୺຤Ͱ΋ಈ࡞͕ͨ͠ɺ౰࣌ͷTCK͸૊ΈࠐΈ୺຤ʹద༻Ͱ͖ΔJavaΛର৅֎ͱ͍ͯͨ͠
    
    
    ಉ͘͡2006೥ɺSun Microsystems͕Java SEΛOSSԽʢݱࡏͷOpenJDKʣ
    
    
    GPLv2Ϋϥεύεྫ֎͖ͭʢվมͨ͠ࡍʹιʔείʔυͷެ։ٛ຿͕͋Δʣ˞Ҏ߱GPLv2ͱදه͢Δ
    Apache harmonyࣄ݅
    35
    

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36. 2007೥ɺSun Microsystems͸TCKΛOSSͱͯ͠ެ։ͨ͠΋ͷͷ
    

    OSS൛ͷJava͸ϥΠηϯε͕GPLv2ͷ΋ͷͷΈΛର৅ͱͨ͠
    
    
    Apache Harmony͸AL-2.0ͩͬͨͨΊର৅֎
    
    
    ࣮࣭తʹ͸Sun Microsystems͕OSSԽͨ͠JDKͷΈ͕ର৅ͱͳ͍ͬͯͨܗ
    
    
    ౰વApache͸߅ٞ͠ɺ֤ॴͰٞ࿦͕ى͖ͨ
    
    
    ݁ہApache Harmony͸Javaͱͯ͠ೝΊΒΕͳ͍··ɺ2010೥ʹ։ൃΛऴྃͨ͠
    Apache harmonyࣄ݅
    36
    

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37. 2007೥ʹGoogle͕AndroidΛൃද
    
    
    Android͸Apache HarmonyΛϕʔεͱͨ͠Dalvik VMΛ౥ࡌ
    
    
    Javaʢతͳ΋ͷʣͰAndroidΞϓϦέʔγϣϯΛ։ൃͰ͖Δ
    
    
    ΋ͪΖΜTCK͸௨͍ͬͯͳ͍
    
    
    ιʔείʔυͷ֦ுࢠ͸.java͕ͩɺTCKΛ௨͍ͬͯͳ͍ͷͰJavaͰ͸ͳ͍
    
    
    Sun Microsystems͸Javaͷ෼அΛট͘ͱͯ͠ɺAndroidͷJavaʢతͳ΋ͷʣΛඇ೉
    Androidࣄ݅
    37
    

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38. ౰࣌ͷܞଳి࿩͸Java ME͕౥ࡌ͞Ε͍ͯͨ
    
    
    ೔ຊͰ͸υίϞͱιϑτόϯΫ͕ɻau͸BREWʢC++ʣ
    
    
    Apple͕iPhoneΛϦϦʔεͯ͠࿩୊ͱͳΓɺGoogle΋ٸ͍ͰޙΛ௥͏ඞཁ͕͋ͬͨ
    
    
    Android޲͚ʹJavaVMΛಠࣗվม͢Δඞཁ͕͋Γɺιʔείʔυͷެ։ٛ຿ͷ͋ΔGPLv2ͷ
    OpenJDKΛ࢖͍ͮΒ͔ͬͨͨΊɺެ։ٛ຿ͷͳ͍AL-2.0ͷApache HarmonyΛϕʔεʹͨ͠ʢਪଌʣ
    
    
    Google಺Ͱ΋͖ͪΜͱTCKΛ௨͢΂͖ͩͱ͍͏ҙݟ͸ग़͍͕ͯͨ
    

    Apache HarmonyϕʔεͳͷͰ௨ΓΑ͏͕ͳ͔ͬͨ
    Androidࣄ݅
    38
    

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39. 2010೥4݄ʹOracle͕Sun MicrosystemsΛങऩ
    
    
    2010೥8݄ʹOracle͕GoogleΛૌু
    
    
    AndroidͷJavaʢతͳ΋ͷʣ͕Javaͷஶ࡞ݖΛ৵֐͍ͯ͠Δͱ͍͏಺༰Ͱૌু
    
    
    ཌ೥Ҏ߱ɺGoogle͸Javaͷ೥࣍ΧϯϑΝϨϯεJavaOneʹࢀՃ͠ͳ͘ͳΓɺ
    

    JavaͷOSSϓϩμΫτͷఏڙʹ΋ফۃతʹͳͬͨ
    
    
    Android͕αϙʔτ͢ΔJavaͷόʔδϣϯ΋6΍7Ͱఀࢭͨ͠ʢؔ਺ܕ෩ͷهड़͕Ͱ͖ͳ͍ʣ
    Googleૌুࣄ݅
    39
    

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40. ૌুͷ݁຤
    
    
    ಛڐݖ৵֐ → ͍ͯ͠ͳ͍Ͱ֬ఆ
    
    
    JavaϥΠϒϥϦͷ࣮૷ίʔυΛແஅෳ੡ → ͍ͯ͠Δ͕͔ᷮ͘͝ͳͷͰഛঈۚ0ԁ
    
    
    Java APIͷஶ࡞ݖ৵֐ → ͍ͯ͠Δ͕ϑΣΞϢʔεͩͱ֬ఆ
    
    
    ܞଳి࿩͕εϚʔτϑΥϯʹஔ͖׵ΘΓɺJava ME͕࢖ΘΕͳ͘ͳͬͨ͜ͱͰ
    

    Sun Microsystems΍Oracle͸ϞόΠϧ෼໺ʹ͓͚ΔJavaͷϏδωεΛࣦ͏͜ͱͱͳͬͨ
    Googleૌুࣄ݅
    40
    

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41. ݱࡏ͸ɺOpenJDK͕།ҰͷOSS൛Javaͱͳ͍ͬͯΔ
    
    
    Apache Harmony΍IcedTeaͳͲͷOSS JavaϓϩδΣΫτ͸͢΂ͯOpenJDKʹ߹ྲྀͨ͠
    
    
    2016೥ʹ͸Android΋OpenJDKϕʔεͱͳΓɺJava8ʹରԠͨ͠
    
    
    ͨͩͦͷࠒʹ͸AndroidΞϓϦ։ൃͷओྲྀ͸Java͔ΒKotlinʹҠ͍ͬͯͬͨ
    
    
    Java6΍7Ͱ΋࣮ߦͰ͖ɺϞμϯͳهड़΋Ͱ͖ΔͨΊ
    OpenJDK
    41
    

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42. ༗ঈԽʁ໰୊
    

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43. Java͸͜Ε·Ͱ2ʙ3೥͝ͱʹ৽͍͠όʔδϣϯ͕ग़͍͕ͯͨ
    

    2017೥ͷJava 9Ҏ߱͸൒೥͝ͱʹϦϦʔε͞ΕΔ͜ͱͱͳͬͨ
    
    
    ৽ػೳ͕ἧ͔ͬͯΒϦϦʔε͢ΔͷͰ͸ͳ͘
    

    ൒೥͝ͱʹؒʹ߹ͬͨػೳͷΈΛ࠾༻ͯ͠ϦϦʔε͢Δ
    
    
    ଞͷػೳ͕·ͩͰ͖͍ͯͳ͍͔Βɺͱ͍͏ཧ༝Ͱ৽ػೳͷϦϦʔε͕
    

    ஗ΕΔ͜ͱΛ๷͙ͨΊ
    JavaͷϦϦʔεαΠΫϧͷมߋ
    43
    

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44. JavaΤϯδχΞ͕Javaͷ։ൃ؀ڥΛߏங͢Δࡍɺ
    

    ओྲྀ͸Oracleʢݩʑ͸Sun Microsystemsʣ͕ఏڙ͢ΔJDK/JREΛ༻͍͍ͯͨ
    
    
    Oracle͸͜ͷOracle JDKͷແঈఏڙΛதࢭ͠ɺJava 9Ҏ߱͸OpenJDKͷΈΛ
    

    ແঈఏڙ͢ΔΑ͏ํ਑Λมߋͨ͠
    
    
    ͜Ε͕ʮJava͕༗ঈԽ͞ΕΔʯͱ͍͏ޡղͷେݩ
    Oracle JDKͷແঈ഑෍ऴྃ
    44
    

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45. Sun/Oracle JDKͷແঈαϙʔτظؒ͸࣍ͷόʔδϣϯ͕ग़ͨ͋ͱ1ʙ2೥ఔ౓ͩͬͨ
    
    
    ྫ͑͹Java 7͸2011೥7݄ϦϦʔεɻແঈαϙʔτ͸2015೥4݄·Ͱ
    
    
    Java 8͸2014೥3݄ϦϦʔε
    
    
    ͜͜Ͱ͍͏ʮແঈαϙʔτظؒʯͱ͸ʮແঈΞοϓσʔτ͕ఏڙ͞ΕΔظؒʯΛࢦ͢
    
    
    ಛʹηΩϡϦςΟύονͳͲ΋͋ΔͨΊɺແঈΞοϓσʔτ͕ఏڙ͞ΕΔ͜ͱ͸ॏཁ
    
    
    ༗ঈͰ͋Ε͹΋ͬͱ௕ظؒͷαϙʔτΛड͚ΒΕΔ
    
    
    Java 7͔ΒJava 8΁ͷҠߦ͸1ʙ2೥͘Β͍ͷ༛༧͕͋Δͱݴ͑Δ
    JDKͷαϙʔτظؒ
    45
    

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46. Oracle OpenJDKͷແঈαϙʔτظؒ͸ʮ࣍ͷόʔδϣϯ͕ग़Δ·Ͱʯ
    
    
    ͭ·Γ൒೥͔ؒ͠Ξοϓσʔτ͕ఏڙ͞Εͳ͍
    
    
    ൒೥ޙʹ͸࣍ͷόʔδϣϯʹҠߦ͢Δඞཁ͕͋Δ
    
    
    ͜Ε͕ʮJava͕༗ঈԽ͞ΕΔʯͱ͍͏ޡղʹഥंΛֻ͚ͨ
    OpenJDKͷαϙʔτظؒ
    46
    

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47. ֤͔ࣾΒOpenJDKͷϏϧυʢ͍ΘΏΔσΟετϦϏϡʔγϣϯʣ͕ఏڙ͞ΕΔΑ͏ʹͳͬͨ
    
    
    Red Hat OpenJDKɺEclipse AdoptiumʢچAdoptOpenJDKʣɺAmazon CorrettoͳͲ
    
    
    ֤ࣾͷOpenJDK͸3೥͝ͱʹग़ΔόʔδϣϯʹLTSʢLong Term SupportʣΛఏڙ
    
    
    OpenJDK 8ɺ11ɺ17ɺ23ɺɺɺ
    
    
    ແঈαϙʔτظؒ͸༷ʑ͕ͩɺͨͱ͑͹AdoptiumͷOpenJDK 8͸2026೥·Ͱ
    
    
    े෼ʹ௕͍ແঈαϙʔτظ͕ؒ͋Δͱݴ͑Δ
    ༷ʑͳOpenJDK
    47
    

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48. ͍·ͷओྲྀ͸ϓϥοτϑΥʔϜͰαϙʔτ͞Ε͍ͯΔOpenJDKΛར༻͢Δ͜ͱ
    
    
    Red Hat Enterprise LinuxΛ࢖͏ͳΒRed Hat OpenJDK
    
    
    AWSͰ࢖͏ͳΒAmazon Corretto
    
    
    AzureͰ࢖͏ͳΒMicrosoft Build of OpenJDK
    
    
    ֶश΍ௐࠪ༻ͳΒαϙʔτظؒͷ୹͍Oracle OpenJDKͰ΋ߏΘͳ͍
    
    
    ֤͕ࣾఏڙ͢ΔOpenJDKʹ͓͍ͯগͣͭ͠ఏڙ͢Δπʔϧ͕ҧͬͨΓɺద༻͞ΕΔύον͕ҟͳΔ͜ͱ͸
    

    ͋ΓಘΔ͕ɺݩͱͳΔOpenJDK͸ಉҰͰ͋ΔͨΊͲΕΛ࢖ͬͯ΋99%ಉ͡ɻίΞػೳ͸100%ಉ͡
    ༷ʑͳOpenJDK
    48
    

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49. ·ͱΊ: ͜Ε͔ΒͷJava
    

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50. ͜ͷΑ͏ͳឯ༨ۂંΛܦͯɺOSS൛ͷJava͸OpenJDKͱͯ͠ҰຊԽ͞Εͨ
    
    
    ෳ਺ͷاۀ΍ஂମɺݸਓʹΑΓ࣮૷ɺϝϯςφϯε͞Ε͍ͯΔ
    
    
    ͪͳΈʹ೔ຊʹ΋OpenJDKͷίϛολ͕͍ΔΑ
    
    
    ݱ୅ʹ͓͍ͯݴޠ΍ϓϥοτϑΥʔϜ͕OSSͰ͋Δ͜ͱ͸౰ͨΓલͷΑ͏ʹײ͡Δ͕
    

    JavaͷΑ͏ʹ௕͍ྺ࢙͕͋ͬͯڊେͳΤίγεςϜΛ൐͏΋ͷΛ
    

    OSSจԽͷਁಁ΍੒ख़ͱڞʹOSSԽ͢Δͱ͜Ζʹ͸૬౰ͳ౒ྗ͕͋ͬͨͱݴ͑Δ
    OSSʹͳͬͨJava
    50
    

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51. GraalVMʹΑΔωΠςΟϒΠϝʔδͷ࡞੒
    
    
    ίϯύΠϧͨ͠΋ͷΛJavaVM্Ͱ࣮ߦ͢ΔͷͰ͸ͳ͘
    

    ίϯύΠϧͯͦ͠ΕͧΕͷOS͝ͱʹ࣮ߦՄೳͳόΠφϦΛ࡞Δ
    
    
    ىಈ࣌ؒͷ୹ॖɺϝϞϦ࢖༻ྔͷ࡟ݮ
    
    
    ϊϯϒϩοΩϯάॲཧ΍ܰྔεϨουʹΑΔฒྻॲཧͷվળ
    
    
    Reactor΍RxJavaͳͲΛ༻͍ͨϦΞΫςΟϒϓϩάϥϛϯάʢOSSϓϩμΫτʣ
    
    
    Project LoomʹΑΔܰྔεϨου΍ݶఆܧଓͷఏڙʢJavaͷඪ४ػೳʹೖΔ༧ఆʣ
    ࠷ۙͱࠓޙͷJavaͷτϨϯυ
    51
    

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52. ൒೥͝ͱͷϦϦʔεʹͳΓɺҎલΑΓ΋ػೳ௥Ճͷεϐʔυ͕૿ͨ͠
    
    
    Flight RecorderʢJavaVMͷϝτϦΫε৘ใΛه࿥͢Δɻ঎༻ػೳͩͬͨ΋ͷ͕OSSԽʣ
    
    
    switchࣜʢswitch͕จ͚ͩͰͳࣜ͘ͱͯ͠࢖͑ΔΑ͏ʹͳΓɺ஋ΛฦͤΔʣ
    
    
    ςΩετϒϩοΫʢ͍ΘΏΔώΞυΩϡϝϯτɻෳ਺ߦͷจࣈྻΛએݴͰ͖Δʣ
    
    
    Ϩίʔυܕʢσʔλܕʹ͍ۙɻΠϛϡʔλϒϧͳσʔλΫϥεΛ༰қʹ࡞ΕΔʣ
    
    
    ύλʔϯϚονʢΦϒδΣΫτͷܕʹΑͬͯ෼ذ͢Δʣ
    ػೳ௥Ճͷߴ଎Խ
    52
    

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53. ܧଓతͳֶश͕ඞཁ
    
    
    ݹ͍஌ࣝͷ··Ͱ΋ϓϩάϥϛϯάͰ͖Δ͕ɺͦΕ͕ਖ਼͍͠Θ͚Ͱ͸ͳ͍
    
    
    ৽͍͠ػೳ͕࢖ΘΕͨιʔείʔυΛಡΊͳ͍ͱࠔΔͰ͠ΐ͏
    
    
    ܧଓతͳֶशΛଅ͢ίϛϡχςΟͷॏཁੑ͕૿͢
    
    
    ఆظతͳษڧձ΍৘ใൃ৴ͳͲ
    ػೳ௥Ճͷߴ଎Խ΁ͷରԠ
    53
    

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54. ܧଓతͳόʔδϣϯΞοϓ͕ඞཁ
    
    
    ͤΊͯ3೥͓͖ʹϦϦʔε͞ΕΔLTS൛ʹ௥ै͍ͤͨ͞
    
    
    ୯७ʹJavaͷόʔδϣϯ͚ͩͰͳ͘ɺपลϥΠϒϥϦ΍ϑϨʔϜϫʔΫɺ
    

    ϛυϧ΢ΣΞͷόʔδϣϯΞοϓ͕ඞཁͱͳΔέʔε΋ଟ͍
    
    
    όʔδϣϯΞοϓʹ௥ै͢ΔͨΊͷCI/CD΍ࣗಈςετͷ࢓૊Έ͕ෆՄܽ
    
    
    DevOpsվળɺͻ͍ͯ͸ΤϯδχΞ΍૊৫ͷ࣭ΛߴΊΔ
    
    
    ʢόʔδϣϯΛԘ௮͚ʹ͢Δͱ͍͏બ୒ࢶ΋ΞϦͰ͚͢Ͳ΋ʣ
    ϦϦʔεαΠΫϧͷߴ଎Խ΁ͷରԠ
    54
    

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55. Java͸OSSจԽͱڞʹาΈɺJavaࣗ਎΋OSSԽ͞Εͨ
    
    
    ༷ʑͳOSSϓϩμΫτ͕ੜ·ΕɺJavaඪ४ʹऔΓࠐ·ΕΔྲྀΕ΋ੜ·Εͨ
    
    
    ଟ͘ͷ૊৫΍ݸਓͷߩݙʹࢧ͑ΒΕ͍ͯΔ
    
    
    ։ൃݩͷاۀ͕ങऩ͞Εͯ΋ɺOSSϓϩμΫτ͸าΈ͕ࢭ·Βͳ͍
    
    
    ϦϦʔε͕ߴ଎Խ͞Εɺػೳ௥Ճ͕ૣ͘ͳͬͨ
    
    
    ։ൃίϛϡχςΟ΍ϢʔβʔάϧʔϓͳͲͷॏཁੑ͸ࠓޙ΋૿͍ͯ͘͠
    ·ͱΊ
    55
    

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56. ຖ݄ͷJJUGφΠτηϛφʔ
    
    
    ࣍ճ͸9/29(ਫ)༧ఆ - Java 17ϦϦʔεه೦ηϛφʔ
    
    
    ೥ʹ2ճͷJJUG CCC
    
    
    ࣍ճ͸11/21(೔)
    
    
    URL: https://www.java-users.jp/
    
    
    Twitter: @JJUG
    JJUGʹࢀՃ͠Α͏ʂ
    56
    

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