Lock in $30 Savings on PRO—Offer Ends Soon! ⏳
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
履歴テーブル、今回はこう作りました 〜 Delegated Types編 〜 / How We Built Our History Table This Time — With Delegated Types
moznion
15
9.2k
Claude Code Getting Started Guide(en)
oikon48
0
130
Digitization部 紹介資料
sansan33
PRO
1
6.1k
MAP-7thplaceSolution
yukichi0403
2
240
小さな判断で育つ、大きな意思決定力 / 20251204 Takahiro Kinjo
shift_evolve
PRO
1
250
経営から紐解くデータマネジメント
pacocat
9
1.9k
私も懇親会は苦手でした ~苦手だからこそ懇親会を楽しむ方法~ / 20251127 Masaki Okuda
shift_evolve
PRO
4
540
Agents IA : la nouvelle frontière des LLMs (Tech.Rocks Summit 2025)
glaforge
0
350
Master Dataグループ紹介資料
sansan33
PRO
1
4k
翻訳・対話・越境で強いチームワークを作ろう! / Building Strong Teamwork through Interpretation, Dialogue, and Border-Crossing
ar_tama
4
1.5k
“決まらない”NSM設計への処方箋 〜ビットキーにおける現実的な指標デザイン事例〜 / A Prescription for "Stuck" NSM Design: Bitkey’s Practical Case Study
bitkey
PRO
1
300
Kill the Vibe?Architecture in the age of AI
stoth
1
170
Featured
See All Featured
Automating Front-end Workflow
addyosmani
1371
200k
Chrome DevTools: State of the Union 2024 - Debugging React & Beyond
addyosmani
9
1k
Practical Tips for Bootstrapping Information Extraction Pipelines
honnibal
25
1.6k
How STYLIGHT went responsive
nonsquared
100
5.9k
Building Flexible Design Systems
yeseniaperezcruz
329
39k
It's Worth the Effort
3n
187
29k
Unsuck your backbone
ammeep
671
58k
Helping Users Find Their Own Way: Creating Modern Search Experiences
danielanewman
31
3k
A Modern Web Designer's Workflow
chriscoyier
697
190k
Practical Orchestrator
shlominoach
190
11k
GraphQLの誤解/rethinking-graphql
sonatard
73
11k
Building an army of robots
kneath
306
46k
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