Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
2012-04-05 JavaOne Tokyo Special LT
Search
都元ダイスケ - MIYAMOTO Daisuke
April 07, 2012
Technology
1
250
2012-04-05 JavaOne Tokyo Special LT
都元ダイスケ - MIYAMOTO Daisuke
April 07, 2012
Tweet
Share
Other Decks in Technology
See All in Technology
Introduction to Sansan Meishi Maker Development Engineer
sansan33
PRO
0
330
Data Hubグループ 紹介資料
sansan33
PRO
0
2.5k
_第4回__AIxIoTビジネス共創ラボ紹介資料_20251203.pdf
iotcomjpadmin
0
170
Master Dataグループ紹介資料
sansan33
PRO
1
4.2k
Contract One Engineering Unit 紹介資料
sansan33
PRO
0
12k
Oracle Database@AWS:サービス概要のご紹介
oracle4engineer
PRO
2
650
Next.js 16の新機能 Cache Components について
sutetotanuki
0
210
Agentic AIが変革するAWSの開発・運用・セキュリティ ~Frontier Agentsを試してみた~ / Agentic AI transforms AWS development, operations, and security I tried Frontier Agents
yuj1osm
0
180
[2025-12-12]あの日僕が見た胡蝶の夢 〜人の夢は終わらねェ AIによるパフォーマンスチューニングのすゝめ〜
tosite
0
240
[Data & AI Summit '25 Fall] AIでデータ活用を進化させる!Google Cloudで作るデータ活用の未来
kirimaru
0
4.2k
[PR] はじめてのデジタルアイデンティティという本を書きました
ritou
0
720
善意の活動は、なぜ続かなくなるのか ーふりかえりが"構造を変える判断"になった半年間ー
matsukurou
0
130
Featured
See All Featured
Visual Storytelling: How to be a Superhuman Communicator
reverentgeek
2
400
How to Think Like a Performance Engineer
csswizardry
28
2.4k
Applied NLP in the Age of Generative AI
inesmontani
PRO
3
2k
Designing Experiences People Love
moore
143
24k
YesSQL, Process and Tooling at Scale
rocio
174
15k
The browser strikes back
jonoalderson
0
280
Believing is Seeing
oripsolob
0
19
The Mindset for Success: Future Career Progression
greggifford
PRO
0
200
The Curious Case for Waylosing
cassininazir
0
200
The Web Performance Landscape in 2024 [PerfNow 2024]
tammyeverts
12
990
16th Malabo Montpellier Forum Presentation
akademiya2063
PRO
0
34
So, you think you're a good person
axbom
PRO
0
1.9k
Transcript
The other day...
1िؒલʹϦϦʔεʂ ※ Powered by Java
This morning... डʹͯ
໌LTͰΔ༧ఆͷݩͰ͢ …͝ొ͕͍͟͝·ͤΜ ͋ɺٶຊʹͳͬͯΔ͔͠Ε·ͤΜ …͍͟͝·ͤΜ…
͋ɺ͋Γ·ͨ͠ʂ ຊͰ͢ΑͶʂ
͋ɺ͋Γ·ͨ͠ʂ ຊͰ͢ΑͶʂ
ࣗݾհ • ݩμΠεέ (@daisuke_m) • Apache Mahout ػցֶश • DDD
ษڧϥΠϑϩά • ͍ͭɾԿΛɾԿ࣌ؒษڧͨ͠ʁ • ͍ͭษڧ͢Δ༧ఆʁ ࣌ؒʁ • ࠓɾࡢɾࠓ݄ɾઌ݄ͷษڧ࣌ؒʁ
ͦΕ࡞ͬͯΔ࣌ʹ ݸਓతʹۤ࿑ͨ͠
ཁ͢Δʹɺओʹ ࣌ؒͱྐྵ͕ۀࣝ
2:33 • ͦΕ࣌ࠁʁ ޕલ2࣌33 • ͦΕ࣌ؒྔʁ 2࣌ؒ33 • Java੩తܕΛେࣄʹ͍ͨ͠Ͱ͢Ͷ •
ʮ࣌ؒʯ༻ېࢭ
ྐྵ • 1=12ϲ݄ʢແۤͳෆۉׂΓʣ • 4ʹҰɺ͏Δ͏ɻ • ୠ͠ɺ100ʹҰͷྫ֎ • ୠ͠ɺ400ʹҰͷྫ֎ͷྫ֎ •
͜ͷล·Ͱඪ४API͕αϙʔτ
ि • ͱ͔݄ͱ͔Ұແࢹͨ͠ 7पظͷΞϨ • Ͳ͔͜Β͕ୈ1िʁ 1ΛؚΉिʁ • िͷ࢝·Γ݄༵ʁ ༵ʁ
λΠϜκʔϯ • UTC-11 αϞΞ • UTC+14 ΩϦεΟϚεΟౡ • "ࠓ"
"ࠓ݄" Λਖ਼֬ʹଊ͑ΔͨΊ ʹɺλΠϜκʔϯͷಛఆ͕ඞཁ
͜͏ͯ͠ݟͯΈΔͱ ࣮ͷੌ͘ෳࡶ ͜͜ʹڍ͛ͨϧʔϧ͘͝Ұ෦ ϧʔϧͬͯΔΜ͚ͩͲͶ
ͦΜͳᓔಃ͠͞Λ શͯղܾ͢Δۜͷؙ
ΤϙοΫඵ • ࠓ໌ि݄Ӟ࣌ࠩͳ͍ • ͨͩ͠ɺৗਓ͕ݟͯΑ͘Θ͔ΒΜ t 0L 1333333333L 2012-04-02 11:22:13
JST 1970-01-01 09:00:00 JST
Javaඪ४API • ͝ଘͷ௨Γ৭ʑΞϨ
JodaTime? JSR 310? • ແବʹෳࡶա͗Δ… • Ethiopic(ΤνΦϐΞྐྵ)? • Coptic(ίϓτྐྵ)? •
͔ͭΘͶʔΑ͆
͏͍͍ɻ ΦϨΦϨͰߦ͘
baseunits v2.1 • ΦϨΦϨOSS • ࣌ࠁ TimePoint ͰෆมΫϥε • ࣌ؒྔ
Duration ͰෆมΫϥε • ݱࡏ࣌ࠁ Clock ͕ͬͯΔ ... • ࡞ͬͯΑ͔ͬͨɺ࣮ࡍɻ Apache License 2.0
ςετ݁ߏ ͨͬΓॻ͍ͨ͠ ࣮αʔϏε্Ͱ ಈ͍ͯΔ࣮ΞϦ ͋ͱggr
࣍ɻ
ͦͷαʔϏεΛ ϦϦʔε్ͨ͠ ϑϧϘοίʹ ͞Εͨ
None
None
None
͓ӄ͞·Ͱ͍ͩͿ ڧ͘ͳΓ·ͨ͠
ѱҙʢ͋·Γʣ ͳ͍Α͏Ͱ͢
We are HIRING! • Java • Wicket • Spring •
Mirage • Ehcache • DDD • Elastic Beanstalk • iOS • ...... • ...etc ͜ͷลͷΩʔϫʔυʹ͍͔ͭ͘Ҿ͔͔ͬͬͨΒ @daisuke_m·Ͱ͝࿈བྷ͍ͩ͘͞ωɻ