最新JavaとIDE #jjug

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1. ࠷৽+BWBͱ*%&
   @yusuke
   ࢁຊϢʔεέ
   

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2. w5XJUUFS"1*+BWBϥού5XJUUFS+
   wεϨουμϯϓղੳπʔϧࣆ
   ࢁຊϢʔεέ
   

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3. -*/&Φʔϓϯνϟοτ+BWB
   

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4. wגࣜձࣾαϜϥΠζϜ୅ද
   ։ൃऀ޲͚ͷπʔϧͷൢച΍Մೳ
   +FU#SBJOTͷ૯୅ཧళ
   $*࿈ܞπʔϧ🌀$*DMPOFͷ։ൃ
   ࢁຊϢʔεέ
   

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5. +FU#SBJOT*OUFMMJ+*%&"
   1FSGPSDF+BWB%FWFMPQFS1SPEVDUJWJUZ3FQPSUΑΓ
   IUUQTXXXKSFCFMDPNSFTPVSDFTKBWBEFWFMPQFSQSPEVDUJWJUZSFQPSU
   

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6. ೪Γڧ͍+BWBਓؾ
   1FSGPSDF+BWB%FWFMPQFS1SPEVDUJWJUZ3FQPSUΑΓ
   IUUQTXXXKSFCFMDPNSFTPVSDFTKBWBEFWFMPQFSQSPEVDUJWJUZSFQPSU
   

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7. +BWBɺಋೖ͠·ͨ͠
   

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8. +BWB͔Β΁Ҡߦͯ͠͏Ε͍͜͠ͱ
   

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9. wಛʹແ͠
   +BWB͔Β΁Ҡߦͯ͠͏Ε͍͜͠ͱ
   

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10. ࠷৽+BWB΁ͷҠߦॱ
    +BWB +BWB +BWB +BWB
    +BWBҎલ
    㾎
    +BWBʙ
    㾎
    +BWB
    㾎
    +BWB
    㾎
    

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11. Switch Expressions TXJUDIΛࣜͱͯ͠දݱՄೳ
    Text Blocks ݁߹ͳ͠ʹෳ਺ߦςΩετΛදݱ
    Pattern Matching for
    instanceof
    JOTUBODFPG࣌ͷΩϟετ͕ෆཁ
    Records ΠϛϡʔλϒϧͳΫϥεΛγϯϓϧʹهड़
    Virtual Threads ܰྔͳεϨου
    +BWB·Ͱͷओͳݴޠػೳͷ·ͱΊ
    

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12. +%,Ξοϓσʔτͷεςοϓ
    ςετ࣮ߦ
    ςετ੔උ मਖ਼
    +%,Ξοϓσʔτ ςετ࣮ߦ मਖ਼
    ίʔυվળ ςετ࣮ߦ मਖ਼
    

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13. .BWFOϓϩδΣΫτͷ+BWBҠߦ
    CVJME
    QMVHJOT
    QMVHJO
    HSPVQ*EPSHBQBDIFNBWFOQMVHJOTHSPVQ*E
    BSUJGBDU*ENBWFODPNQJMFSQMVHJOBSUJGBDU*E
    WFSTJPOWFSTJPO
    DPO
    fi
    HVSBUJPO
    SFMFBTFSFMFBTF
    DPNQJMFS"SHTFOBCMFQSFWJFXDPNQJMFS"SHT
    DPO
    fi
    HVSBUJPO
    QMVHJO
    QMVHJOT
    CVJME
    QSPQFSUJFT
    NBWFODPNQJMFSTPVSDFNBWFODPNQJMFSTPVSDF
    NBWFODPNQJMFSUBSHFUNBWFODPNQJMFSUBSHFU
    QSPKFDUCVJMETPVSDF&ODPEJOH65'QSPKFDUCVJMETPVSDF&ODPEJOH
    QSPQFSUJFT
    Java 20Λ༗ޮʹͯ͠Ϗϧυ
    ϓϨϏϡʔػೳΛ༗ޮʹͯ͠Ϗϧυ
    

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14. (SBEMFϓϩδΣΫτͷ+BWBҠߦ
    DPNQJMF+BWB\
    PQUJPOTDPNQJMFS"SHT<FOBCMFQSFWJFX>
    ^
    DPNQJMF5FTU+BWB\
    PQUJPOTDPNQJMFS"SHT<FOBCMFQSFWJFX>
    ^
    UFTU\
    KWN"SHTFOBCMFQSFWJFX
    VTF+6OJU1MBUGPSN
    
    ^
    KBWB\
    UPPMDIBJO\
    MBOHVBHF7FSTJPO+BWB-BOHVBHF7FSTJPOPG
    
    ^
    ^
    Java 20Λ༗ޮʹͯ͠Ϗϧυ
    ϓϨϏϡʔػೳΛ༗ޮʹͯ͠Ϗϧυ
    

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15. ઃఆ > Build, Execution, Deployment > Build Tools > Gradle
    Gradle JVMΛJava 19·ͨ͸ͦΕҎલʹઃఆ
    

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16. σϞΞϓϦέʔγϣϯͷઆ໌
    

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17. w0QU3FUVSO NBD
    "MU&OUFS 8JO-JOVY
    
    *OUFMMJ+*%&"ͷΫΠοΫϑΟοΫε
    

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18. w*OTQFDU$PEFʜ
    ίʔυͷ੩తղੳ
    

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19. wϒϨʔΫϙΠϯτͰఀࢭ
    wʮͦͷεϨου͚ͩఀࢭʯ΋Մೳ
    εϨου໰୊ͷσόοάجຊ
    

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20. wεϨουμϯϓ
    w֤εϨου͕ʮࠓԿΛ͍ͯ͠Δ͔ʯΛऔಘ
    εϨου໰୊ͷσόοάجຊ
    

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21. wੜ࢈ੑ͕ߴ͍+BWB
    w࣍ͷ+BWB͸-54
    ·ͱΊ
    

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22. ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠
    

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