Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Black Magic in Java

Avatar for kaiinui kaiinui
August 20, 2014
Technology
1
570

Black Magic in Java

Black magic with annotation in Android Java development!

Avatar for kaiinui

kaiinui

August 20, 2014
Tweet

More Decks by kaiinui

See All by kaiinui
†黒魔術† と Annotation と AspectJ
Avatar for kaiinui kaiinui
3
1.2k
API開発自動化と量産
Avatar for kaiinui kaiinui
1
450

Other Decks in Technology

See All in Technology
extension 現場で使えるXcodeショートカット一覧
Avatar for とんとんぼ ktombow
0
220
生成AIを活用したZennの取り組み事例
Avatar for igarashi ryosukeigarashi
0
210
AWS Top Engineer、浮いてませんか？ / As an AWS Top Engineer, Are You Out of Place?
Avatar for Yuji Oshima yuj1osm
2
130
Git in Team
Avatar for Yasunobu Kawaguchi kawaguti
PRO
2
150
[2025-09-30] Databricks Genie を利用した分析基盤とデータモデリングの IVRy の現在地
Avatar for 和田 悠佑 wxyzzz
0
500
「AI駆動PO」を考えてみる - 作る速さから価値のスループットへ：検査・適応で未来を開発 / AI-driven product owner. scrummat2025
Avatar for yosuke nagai yosuke_nagai
4
650
AWS 잘하는 개발자 되기 - AWS 시작하기: 클라우드 개념부터 IAM까지
Avatar for KimJaewook kimjaewook
0
110
Shirankedo NOCで見えてきたeduroam/OpenRoaming運用ノウハウと課題 - BAKUCHIKU BANBAN #2
Avatar for marokiki marokiki
0
150
about #74462 go/token#FileSet
Avatar for tom twinkle tomtwinkle
1
440
OpenAI gpt-oss ファインチューニング入門
Avatar for kmotohas kmotohas
2
1.1k
生成AI_その前_に_マルチクラウド時代の信頼できるデータを支えるSnowflakeメタデータ活用術.pdf
Avatar for mikami cm_mikami
0
120
AI時代だからこそ考える、僕らが本当につくりたいスクラムチーム / A Scrum Team we really want to create in this AI era
Avatar for TAKAKING22 takaking22
7
3.7k

Featured

See All Featured
The Art of Programming - Codeland 2020
Avatar for Erika Heidi erikaheidi
56
14k
A Modern Web Designer's Workflow
Avatar for Chris Coyier chriscoyier
697
190k
Mobile First: as difficult as doing things right
Avatar for Swwweet swwweet
224
10k
Designing for humans not robots
Avatar for Tammie Lister tammielis
254
26k
How STYLIGHT went responsive
Avatar for nonsquared nonsquared
100
5.8k
The Success of Rails: Ensuring Growth for the Next 100 Years
Avatar for Eileen M. Uchitelle eileencodes
46
7.6k
Building a Modern Day 
E-commerce SEO Strategy
Avatar for Aleyda Solis aleyda
43
7.7k
[Rails World 2023 - Day 1 Closing Keynote] - The Magic of Rails
Avatar for Eileen M. Uchitelle eileencodes
36
2.5k
Bootstrapping a Software Product
Avatar for Garrett Dimon garrettdimon
PRO
307
110k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
Avatar for Michelle Schulp Hunt marktimemedia
31
2.5k
Sharpening the Axe: The Primacy of Toolmaking
Avatar for Bryan Cantrill bcantrill
45
2.5k
How GitHub (no longer) Works
Avatar for Zach Holman holman
315
140k

Transcript

  1. †黒魔術† @_kaiinui

  2. Java の黒魔術: Annotation

  3. Java の黒魔術: Annotation どうみても黒魔術

  4. Java の黒魔術: Annotation Annotation as a code?

  5. 良さ？ ・宣言的！！ ・コードと「宣言」を分離出来る ・コードが短くなったり

  6. 例: ButterKnife

  7. 例: Retrofit

  8. 自作 Annotation を作る

  9. ツール • AspectJ • java.lang.annotation

  10. 1. Annotation をつくる（カンタン）

  11. 2. AspectJ で黒魔術

  12. @PotatoTip をつけるだけで

  13. 黒魔術がもっと気になる人 JakeWharton の Hugo とか参考にしてください＞＜ 普通の Annotation の使い方は、 ButterKnife とか

  14. ところで便利ライブラリ: Hugo

  15. Annotation は Java の福音