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michael-unltd 2024/10/17
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michael-unltd 2020/04/09
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michael-unltd 2020/03/09
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Java Jacksonã§JSONã¨ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’å¤‰æ› | ITSakura
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michael-unltd 2019/02/02
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michael-unltd 2019/02/01
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Convert Java Objects to JSON with Jackson - Mkyong.com
This article will show you how to convert Java objects to JSON with Jackson. Table of contents: 1. Setup Jackson 2. Jackson quick examples 3. Convert Java Object to JSON using Jackson 4. Convert JSON to Java object using Jackson 5. Write Java object to JSON file 6. Read from JSON file to Java object 7. FAQs 8. Download Source Code 9. References P.S Tested with Jackson 2.17.0 <dependency> <groupId>
michael-unltd 2019/01/30
POJO<=>JSON

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michael-unltd 2019/01/22
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michael-unltd 2019/01/22
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michael-unltd 2019/01/16
FatJarä½œæˆæ‰‹é †

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Deploying Microservices with AWS Fargate
michael-unltd 2019/01/15
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Java ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚’ Docker ã‚³ãƒ³ãƒ†ãƒŠä¸Šã§å®Ÿè¡Œã—ã‚ˆã†ã¨ã—ãŸã¨ãã«ã€ãƒ™ãƒ¼ã‚¹ã‚¤ãƒ¡ãƒ¼ã‚¸ã¨ã—ã¦ã©ã® Docker ã‚¤ãƒ¡ãƒ¼ã‚¸ã‚’é¸ã¶ã®ãŒã‚ˆã„ã‹ã‚’è€ƒãˆã¦ã¿ã¾ã™ã€‚ ã¯ã˜ã‚ã«Permalink Java ã§ Web ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚’é–‹ç™ºã—ã¦é‹ç”¨ã€ã¨ã„ã†ã¨ã€æ˜”ã¯ Tomcat ã‚’ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã—ãŸã‚µãƒ¼ãƒã« JAR ãƒ•ã‚¡ã‚¤ãƒ«ã‚„ WAR ãƒ•ã‚¡ã‚¤ãƒ«ã‚’é…å¸ƒã—ã¦ãƒ‡ãƒ—ãƒã‚¤ã—ã¦ã„ãŸã‚ˆã†ãªè¨˜æ†¶ãŒå¾®ã‹ã«æ®‹ã£ã¦ã„ã‚‹ã®ã§ã™ãŒã€æ•°å¹´å‰ã‹ã‚‰ã¯ Spring Boot ã®ã‚ˆã†ã«çµ„ã¿è¾¼ã¿ Tomcat ãªã©ã‚’æŽ¡ç”¨ã—ã€Maven ã‚„ Gradle ã®ãƒ“ãƒ«ãƒ‰ã‚ªãƒ¼ãƒˆãƒ¡ãƒ¼ã‚·ãƒ§ãƒ³ãƒ„ãƒ¼ãƒ«ã®åŠ›ã‚’å€Ÿã‚Šã¦ Java ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã®å®Ÿè¡Œã«å¿…è¦ãª JAR ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ã²ã¨ã¾ã¨ã‚ã«ã—ãŸ fat JAR (uber JAR) ã‚’æ§‹ç¯‰ã—ã€å˜ä½“ã® JAR ãƒ•ã‚¡ã‚¤ãƒ«ã ã‘ã‚’ Java ãŒã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã•ã‚Œã¦ã„ã‚‹ã‚µãƒ¼ãƒã«é…å¸ƒã—ã¦ãƒ‡ãƒ—ãƒã‚¤â€¦ ã¨ã™ã‚‹ã“ã¨ãŒåœ§å€’çš„ã«
michael-unltd 2019/01/15
â€œopenjdk:8-jre-alpineâ€

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Overview - OkHttp
Overview Features Recipes Security Works with OkHttp API Change Logs Contributing OkHttpÂ¶ HTTP is the way modern applications network. Itâ€™s how we exchange data & media. Doing HTTP efficiently makes your stuff load faster and saves bandwidth. OkHttp is an HTTP client thatâ€™s efficient by default: HTTP/2 support allows all requests to the same host to share a socket. Connection pooling reduces reque
michael-unltd 2017/05/08
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michael-unltd 2017/03/14
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Iteratorãƒ‘ã‚¿ãƒ¼ãƒ³ - Qiita
public class BookShelf implements Aggregate { private List<Book> _books = new ArrayList<Book>(); public void addBook(Book book) { _books.add(book); } public Book getBookAt(int idx) throws IndexOutOfBoundsException { return _books.get(idx); } public void removeBookAt(int idx) throws IndexOutOfBoundsException { _books.remove(idx); } public int getNumberOfBooks() { return _books.size(); } @Override p
michael-unltd 2017/01/29
Java

design pattern
ãƒªãƒ³ã‚¯
Androidã§ã‚‚iPhoneã«è² ã‘ãªã„ã‚ˆã†ãªã‚¢ãƒ‹ãƒ¡ãƒ¼ã‚·ãƒ§ãƒ³ã‚’å®Ÿè£…ã—ã¦ã¿ã‚ˆã†
ãƒ¤ãƒ•ãƒ¼æ ªå¼ä¼šç¤¾ã¯ã€2023å¹´10æœˆ1æ—¥ã«LINEãƒ¤ãƒ•ãƒ¼æ ªå¼ä¼šç¤¾ã«ãªã‚Šã¾ã—ãŸã€‚LINEãƒ¤ãƒ•ãƒ¼æ ªå¼ä¼šç¤¾ã®æ–°ã—ã„ãƒ–ãƒã‚°ã¯ã“ã¡ã‚‰ã§ã™ã€‚LINEãƒ¤ãƒ•ãƒ¼ Tech Blog ã“ã‚“ã«ã¡ã¯ã€Yahoo!ãƒ‹ãƒ¥ãƒ¼ã‚¹é–‹ç™ºã®åŠ è—¤çœŸä¹Ÿã§ã™ã€‚ Yahoo!ãƒ‹ãƒ¥ãƒ¼ã‚¹ã§ã¯ä¸»ã«Androidã‚¢ãƒ—ãƒªã®é–‹ç™ºã‚’ã—ã¦ã„ãŸã®ã§ã™ãŒã€ç¾åœ¨ã¯ ã‚¹ã‚¿ãƒ¼è‚²æˆãƒ—ãƒã‚°ãƒ©ãƒ ã¨ã„ã†ç¤¾å†…ãƒ™ãƒ³ãƒãƒ£ãƒ¼ã®æž çµ„ã¿ã§ã€mato*memoã¨ã„ã†Androidã‚¢ãƒ—ãƒªã®é–‹ç™ºã‚’ã—ã¦ã„ã¾ã™ã€‚ ãµã£ã¦ç°¡å˜ãƒ¡ãƒ¢ï¼ mato*memo ï½žã¾ã¨ã‚ã‚‚ï½ž ä»Šå›žã¯ã€mato*memoã‚¢ãƒ—ãƒªé–‹ç™ºã§ã‚¢ãƒ‹ãƒ¡ãƒ¼ã‚·ãƒ§ãƒ³ã‚’å®Ÿè£…ã™ã‚‹ãŸã‚ä½¿ç”¨ã—ãŸã€Property Animationã«ã¤ã„ã¦ç´¹ä»‹ã—ãŸã„ã¨æ€ã„ã¾ã™ã€‚ ã¡ãªã¿ã«é–‹ç™ºå½“åˆã®ç›®æ¨™ã¯ã€ã‚¿ã‚¤ãƒˆãƒ«ã«ã‚‚ã‚ã‚‹é€šã‚Šã€iPhoneã«ã‚‚è² ã‘ãªã„ã‚¢ãƒ‹ãƒ¡ãƒ¼ã‚·ãƒ§ãƒ³ã‚’Androidã§å®Ÿè£…ã™ã‚‹ã“ã¨ã§ã—ãŸã€‚ çµæžœãŒã©ã†ãªã£ãŸã‹ã¯ã€ä¸Šã®ãƒªãƒ³ã‚¯ã‹ã‚‰å®Ÿéš›ã«ã‚¢ãƒ—ãƒªã‚’ãƒ€ã‚¦ãƒ³ãƒãƒ¼
michael-unltd 2016/12/15
android

animation

Java
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Java ã®ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã‚’ JCenter ã§å…¬é–‹ã™ã‚‹æ‰‹é †ã¾ã¨ã‚
ã¯ã˜ã‚ã« Android Studio ã‹ã‚‰ Android ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã®ãƒ“ãƒ«ãƒ‰ã‚‚ Gradle ã§å®Ÿè¡Œã•ã‚Œã‚‹ã‚ˆã†ã«ãªã‚Šã¾ã—ãŸã€‚ Gradle ã§ã¯ Maven ãƒªãƒã‚¸ãƒˆãƒªã§é…ä¿¡ã•ã‚Œã¦ã„ã‚‹ãƒ©ã‚¤ãƒ–ãƒ©ãƒªãŒéžå¸¸ã«ç°¡å˜ã«ä½¿ãˆã‚‹ã®ã§ã€è‡ªä½œã®ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã‚’ JCenter ã‚„ Maven Central ã§å…¬é–‹ã™ã‚‹åŠ¹æžœã¯ã“ã‚Œã¾ã§ä»¥ä¸Šã«é«˜ããªã£ã¦ã„ã‚‹ã¨æ€ã„ã¾ã™ã€‚ ãã“ã§æœ€è¿‘ã€Github ã§å…¬é–‹ã—ã¦ã„ã‚‹ Java ã®ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã‚’ JCenter ã§å…¬é–‹ã—ã¦ã¿ãŸã®ã§ã€ãã®æ‰‹é †ã‚’ã¾ã¨ã‚ã¾ã—ãŸã€‚ ä¸‹è¨˜ã®2ãƒšãƒ¼ã‚¸å‚è€ƒã«ã—ã¦ã„ã¾ã™ã€‚ Gradleã§Bintrayã«ã‚¢ãƒƒãƒ—ãƒãƒ¼ãƒ‰ã™ã‚‹æ‰‹é † How to distribute your own Android library through jCenter and Maven Central from Android Studio å‰æ Gradle ã§ãƒ“ãƒ«ãƒ‰ã§ãã‚‹ J
michael-unltd 2016/11/30
ãƒã‚¤ãƒŠãƒªç‰ˆã®CPANã®ã‚ˆã†ãªã‚‚ã®ã¨ã®ã“ã¨

java

android
ãƒªãƒ³ã‚¯
GitHub - tokuhirom/java-handbook
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michael-unltd 2016/11/10
Java

reference
ãƒªãƒ³ã‚¯
Singleton ãƒ‘ã‚¿ãƒ¼ãƒ³ã®ä½¿ã„ã©ã“ã‚ã‚’ã¾ã¨ã‚ã¦ã¿ãŸ
GoFã®ãƒ‡ã‚¶ã‚¤ãƒ³ãƒ‘ã‚¿ãƒ¼ãƒ³ã®ä¸ã§ã‚‚ç‰¹ã«çŸ¥ååº¦ã®é«˜ã„ (ãã—ã¦é–“é•ã£ãŸä½¿ã‚ã‚Œæ–¹ã®å¤šã„) Singleton ãƒ‘ã‚¿ãƒ¼ãƒ³, çš†æ§˜ã¯æœ‰åŠ¹æ´»ç”¨ã—ã¦ã¾ã™ã‹ï¼Ÿ ä»Šå›žã¯è‡ªåˆ†ã®è€ƒãˆã‚‹ Singleton ãƒ‘ã‚¿ãƒ¼ãƒ³ã®æœ‰åŠ¹ãªä½¿ã„ã©ã“ã‚ã‚’ NG ã‚³ãƒ¼ãƒ‰é›†ã‚‚æ·»ãˆã¦èª¬æ˜Žã—ãŸã„ã¨æ€ã„ã¾ã™. (â€»ã‚µãƒ³ãƒ—ãƒ«ã‚³ãƒ¼ãƒ‰ã¯ Java ã¨ PHP ã§è¨˜è¼‰ã—ã¾ã™) æ¦‚è¦ Singleton ãƒ‘ã‚¿ãƒ¼ãƒ³ã‚’é©ç”¨ã™ã¹ãæ¡ä»¶ã«ã¤ã„ã¦, çµè«–ã‚’ç°¡å˜ã«æ›¸ã„ã¦ã—ã¾ã†ã¨ çŠ¶æ…‹ã‚’æŒãŸãªã„ã“ã¨ ãƒãƒªãƒ¢ãƒ¼ãƒ•ã‚£ã‚ºãƒ ãŒçµ¡ã‚€ (æŠ½è±¡ã‚¯ãƒ©ã‚¹ã¾ãŸã¯ã‚¤ãƒ³ã‚¿ãƒ•ã‚§ãƒ¼ã‚¹ã‚’å®Ÿè£…ã—ã¦ã„ã‚‹) ã“ã¨ ã® 2 ç‚¹ã«å°½ãã¾ã™. ãŠãã‚‰ãã“ã‚Œã‚‰ã‚’ç„¡æ„è˜çš„ã«å®Ÿè·µã—ã¦ã„ã‚‹ãƒ—ãƒã‚°ãƒ©ãƒžãƒ¼ã‚‚å¤šã„ã®ã§ã¯ãªã„ã‹ã¨æ€ã„ã¾ã™. çŠ¶æ…‹ã‚’æŒãŸãªã„ã“ã¨ é‰„å‰‡ã§ã™. ãƒ¡ãƒ³ãƒå¤‰æ•°ã‚’å«ã‚“ã ã‚·ãƒ³ã‚°ãƒ«ãƒˆãƒ³ãƒ‘ã‚¿ãƒ¼ãƒ³ã£ã¦, ãã‚Œå˜ãªã‚‹ã‚°ãƒãƒ¼ãƒãƒ«å¤‰æ•°ã§ã™ã‹ã‚‰ï¼ WEB ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã®ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ãªã©ã§ã“ã‚“ãªã‚³ãƒ¼ãƒ‰ã‚’è¦‹ãŸã“ã¨ã¯
michael-unltd 2016/10/19
singleton tips

design pattern

java

*tips
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åˆå¿ƒè€…ã®ãŸã‚ã® RxJava
æœ¬ã‚»ãƒƒã‚·ãƒ§ãƒ³ã§ã¯ã€æœ€è¿‘ Android ã‚¢ãƒ—ãƒªé–‹ç™ºã§æ³¨ç›®ã‚’æµ´ã³ã¦ã„ã‚‹ Reactive Extension (Rx) ã¨å‘¼ã°ã‚Œã‚‹éžåŒæœŸå‡¦ç†ã‚’æ‰±ã†ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã«ã¤ã„ã¦ç°¡å˜ã«èª¬æ˜Žã—ã€ã•ã‚‰ã« RxJava ã‚’ä¾‹ã«ã€ãã‚Œã‚’ã©ã®ã‚ˆã†ã«å®Ÿéš›ã®é–‹ç™ºã«æ´»ç”¨ã—ã¦ã„ãã‹ã‚’è§£èª¬ã—ã¾ã™ã€‚ Rx ã¯ãã®è€ƒãˆæ–¹ã‚’ç†è§£ã™ã‚‹ã¾ã§ã«â€¦
michael-unltd 2016/10/11
android

extension

RxJava

Java
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ã‚´ãƒ¼ãƒ«ãƒ‰ãƒžãƒ³ãƒ»ã‚µãƒƒã‚¯ã‚¹ç™ºã®Javaã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ã€ãã®7ã¤ã®ç‰¹å¾´ã¨æ´å²ã¨ã¯
ã‚´ãƒ¼ãƒ«ãƒ‰ãƒžãƒ³ãƒ»ã‚µãƒƒã‚¯ã‚¹ç™ºã®Javaã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ã€ãã®7ã¤ã®ç‰¹å¾´ã¨æ´å²ã¨ã¯ï¼šã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³å‡¦ç†ã®ä¸‡èƒ½é“å…·ç®±Eclipse Collectionså…¥é–€ï¼ˆ1ï¼‰ï¼ˆ1/3 ãƒšãƒ¼ã‚¸ï¼‰ æœ¬é€£è¼‰ã§ã¯ã€ã‚´ãƒ¼ãƒ«ãƒ‰ãƒžãƒ³ãƒ»ã‚µãƒƒã‚¯ã‚¹ç™ºã®ã‚ªãƒ¼ãƒ—ãƒ³ã‚½ãƒ¼ã‚¹Javaã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ã§ã‚ã‚‹Eclipse Collectionsã«ã¤ã„ã¦ã€ãã®æ¦‚è¦ã¨æ´å²ã€æ©Ÿèƒ½ã‚’ä¸å¿ƒã«ç´¹ä»‹ã—ã¾ã™ã€‚ã“ã‚Œã¾ã§ã®Javaã‚„Java 8ã®Stream APIã¨æ¯”è¼ƒã—ã¦ä½•ãŒé•ã†ã®ã‹ã€‚Eclipse Collectionsã‚’ä¾‹ã«ã€èªè€…ã®çš†ã•ã‚“ãŒã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³å‡¦ç†ã‚’ã‚ˆã‚Šæ·±ãç†è§£ã™ã‚‹ãŸã‚ã®ä¸€åŠ©ã«ãªã‚Œã°ã¨æ€ã„ã¾ã™ã€‚ ã‚´ãƒ¼ãƒ«ãƒ‰ãƒžãƒ³ãƒ»ã‚µãƒƒã‚¯ã‚¹ãŒé–‹ç™ºã—ã€ã‚ªãƒ¼ãƒ—ãƒ³ã‚½ãƒ¼ã‚¹ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ï¼ˆOSSï¼‰ã¨ã—ã¦å…¬é–‹ã—ãŸJavaã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ã€ŒGS Collectionsã€ãŒã€Eclipse Foundationã«ç§»è¡Œã—ã€ã€ŒEclipse Collecti
michael-unltd 2016/08/06
â€œEclipse Collectionsã¯æ±Žç”¨çš„ãªJavaãƒ©ã‚¤ãƒ–ãƒ©ãƒªã§ã™ã®ã§ã€Eclipse IDEã§ãªãã¦ã‚‚ä½¿ãˆã¾ã™ã€‚IntelliJ IDEAã‚„NetBeansã§ã‚‚å½“ç„¶ä½¿ãˆã¾ã™ã—ã€Vimã‚„Emacsã§ã‚‚æ›¸ã‘ã¾ã™ã€‚â€

Java

*programming
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