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javaã«é–¢ã™ã‚‹sugyanã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (79)

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AIãƒ»æ©Ÿæ¢°å¦ç¿’ãƒãƒ¼ãƒ ã®ãƒ–ãƒã‚°ãƒªãƒ¬ãƒ¼ã‚‚9æ—¥ç›®ã«ãªã‚Šã¾ã—ãŸã€‚åŒãƒãƒ¼ãƒ ã®æ¨ªæœ¬@yokomotodã§ã™ã€‚ æœ¬æ—¥ã¯Javaã¨Goã‚’é¡Œæã«ä¸¦è¡Œãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã¾ã‚ã‚Šã®è‡ªç”±ç ”ç©¶ã‚’ã—ãŸãŠè©±ã‚’ã—ã¦ã¿ãŸã„ã¨æ€ã„ã¾ã™ã€‚ 3éƒ¨æ§‹æˆã§ã€ãƒ‘ãƒ¼ãƒˆ1ã§ã¯ç™ºç«¯ã¨ãªã£ãŸã€ŒæŽ’ä»–åˆ¶å¾¡ã€ã«ã¤ã„ã¦ã€ãƒ‘ãƒ¼ãƒˆ2ã§ã¯ã€Œãƒ¡ãƒ¢ãƒªã®å¯è¦–åŒ–ã€ã«ã¤ã„ã¦ã€ãã‚Œãžã‚ŒJavaã¨Goã‚’æ¯”ã¹ã¦ã¿ã¾ã—ãŸã€‚ æœ€å¾Œã«ãƒ‘ãƒ¼ãƒˆ3ã§ã¯ã€ãã‚Œã‚‰ã®å‹•ä½œã‚’è¦å®šã™ã‚‹ã€Œãƒ¡ãƒ¢ãƒªãƒ¢ãƒ‡ãƒ«ã€ã«ã¤ã„ã¦ã€ã‚ã‹ã‚Šã‚„ã™ãè§£èª¬ã•ã‚Œã¦ã„ã‚‹ãƒªã‚½ãƒ¼ã‚¹ã‚’ç´¹ä»‹ã—ã¾ã™ã€‚ é•·éŽãŽã‚‹ï¼ 3è¡Œã§ï¼ï¼ ãƒ‘ãƒ¼ãƒˆ1: synchronized = ã€ŒæŽ’ä»–åˆ¶å¾¡ã€ï¼Ÿ Java synchronized vs Go sync.Mutex Goã§å†å…¥å¯èƒ½ãªãƒãƒƒã‚¯ï¼Ÿ ä»®ã«Goã§å†å…¥å¯èƒ½ãªãƒãƒƒã‚¯ã‚’å®Ÿè£…ã™ã‚‹ãªã‚‰ï¼Ÿ JavaãŒå†å…¥å¯èƒ½ã‚’é¸æŠžã—ãŸç†ç”± ãƒ‘ãƒ¼ãƒˆ2. sycnhronized = ã€ŒæŽ’ä»–åˆ¶å¾¡ã€ï¼‹ã€Œãƒ¡ãƒ¢ãƒªå¯è¦–æ€§ã®ä¿è¨¼ã€ Javaã®
sugyan 2024/08/29
java

goroutine

concurrent

programming
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sugyan 2020/10/30
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java

calendar

æš¦
ãƒªãƒ³ã‚¯
ã€ŒLINE Ã— SUSI = ?ã€JJUG CCC 2017 Spring ç®¸è¢‹ã®æ–‡å—åˆ—åˆæˆã‚³ãƒ¼ãƒ‰ã‚’è§£èª¬ - LINE ENGINEERING
ã€ŒLINE Ã— SUSI = ?ã€JJUG CCC 2017 Spring ç®¸è¢‹ã®æ–‡å—åˆ—åˆæˆã‚³ãƒ¼ãƒ‰ã‚’è§£èª¬ ã¯ã˜ã‚ã« ã“ã‚“ã«ã¡ã¯ã€LINE Fukuokaã®ãã—ã ã§ã™ã€‚ LINEã§ã¯ã€2017/5/20ã«è¡Œã‚ã‚ŒãŸ JJUG CCC 2017 Spring ã§å¯¿å¸ã‚¹ãƒãƒ³ã‚µãƒ¼ã‚’ã•ã›ã¦ã„ãŸã ãã¾ã—ãŸã€‚ ã“ã®ã¨ãã®æ¨¡æ§˜ã¯ã€æ¬¡ã®ãƒ–ãƒã‚°ã§ãŠä¼ãˆã—ã¦ã„ã¾ã™ã€‚ JJUG CCC 2017 Spring ç™»å£‡&å”è³›ãƒ¬ãƒãƒ¼ãƒˆ : LINE Engineering Blog ã“ã®ã¨ãã€å†™çœŸã®ã‚ˆã†ãªç®¸è¢‹ã§ç®¸ã‚’é…ã£ã¦ã„ã¾ã™ã€‚ ã“ã“ã«ã¯æ¬¡ã®ã‚ˆã†ãªã‚³ãƒ¼ãƒ‰ãŒå°åˆ·ã•ã‚Œã¦ã„ã¾ã—ãŸã€‚ IntStream.range(0, 4) .mapToObj(idx -> new int[]{"SUSI".charAt(idx), "LINE".charAt(idx)}) .map(p -> p[0]*p[0]*311-p[0]*49_57
sugyan 2017/06/24
ã¨ã¦ã‚‚çœŸå‰£ã«ã‚¢ãƒ›ãªã“ã¨ã‚’ã‚„ã£ã¦ã„ã¦ã€è‰¯ã„

LINE

Java

math
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JJUG CCC 2017 Spring ç™»å£‡&å”è³›ãƒ¬ãƒãƒ¼ãƒˆ - LINE ENGINEERING
By LINE Engineering | 2017.05.23 2021.01.08LINE Engineering Blog official account LINEæ ªå¼ä¼šç¤¾ã§ã¯ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã®ãŸã‚ã€æ§˜ã€…ãªæ´»å‹•ã‚’æ”¯æ´ã—ã¦ãŠã‚Šã¾ã™ã€‚ ã€å”è³›æƒ…å ±ã€‘JJUG CCC 2017 SPRING : LINE Engineering Blog ã§ã‚‚ãŠçŸ¥ã‚‰ã›ã—ã¦ãŠã‚Šã¾ã—ãŸãŒã€LINE ã¯å¯¿å¸ã‚¹ãƒãƒ³ã‚µãƒ¼ã¨ã—ã¦å”è³›ã„ãŸã—ã¾ã—ãŸã€‚ã¾ãŸã€LINE Fukuokaã§åƒãã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ãŒç™»å£‡ã„ãŸã—ã¾ã—ãŸã®ã§ãã®æ§˜åã‚‚åˆã‚ã›ã¦ã”ç´¹ä»‹ã„ãŸã—ã¾ã™ã€‚ JJUG CCC ã¨ã¯ æ¯Žå¹´2å›žã€æ˜¥ã¨ç§‹ã«é–‹å‚¬ã™ã‚‹æ—¥æœ¬æœ€å¤§ã®Javaã‚³ãƒŸãƒ¥ãƒ‹ãƒ†ã‚£ã‚¤ãƒ™ãƒ³ãƒˆã§ã™ã€‚Javaé–¢é€£ã®æŠ€è¡“ã‚„äº‹ä¾‹ã«é–¢ã™ã‚‹è‰¯è³ªãªã‚»ãƒƒã‚·ãƒ§ãƒ³ãŒè¡Œã‚ã‚Œã€ã¾ãŸç•°ãªã‚‹åˆ†é‡Žã§æ´»èºã™ã‚‹Java æŠ€è¡“è€…ãŒä¸€å ‚ã«ä¼šã™ã‚‹å ´ã¨ã‚‚ãªã£ã¦ã„ã¾ã™ã€‚ â–¼å…¬å¼ã‚µã‚¤ãƒˆ JJUG CCC 2017 Sprin
sugyan 2017/05/23
java

jjug_ccc

LINE

sushi
ãƒªãƒ³ã‚¯
Jet Brains Night è¡Œã£ã¦ããŸ - tokuhirom's blog
Jet Brains Night è¡Œã£ã¦ããŸ Yahoo! Japan ã•ã‚“ã®ã‚ªãƒ•ã‚£ã‚¹ã§ Jet Brains Night ã¨ã„ã†ãƒŸãƒ¼ãƒˆã‚¢ãƒƒãƒ—ã‚¤ãƒ™ãƒ³ãƒˆãŒã‚ã£ãŸã®ã§è¡Œã£ã¦ããŸã€‚ å¤§ãã‚ã®ã‚»ãƒŸãƒŠãƒ¼ãƒ«ãƒ¼ãƒ ã‚’2å€‹ã¶ã¡æŠœã„ãŸæ„Ÿã˜ã§ã€ã‚¹ã‚¯ãƒªãƒ¼ãƒ³ãŒå‰é¢4é¢ã¨ã‚µã‚¤ãƒ‰2é¢ã‚ã£ã¦ã¨ã«ã‹ãåºƒãã¦ãã‚Œã„ãªé–‹å ´ã§ã—ãŸã€‚ IntelliJ ã® tips ã¨ã‹ä¸€å€‹ãã‚‰ã„å¦ã¹ã‚Œã°ã„ã„ãªãƒ¼ã¨æ€ã£ã¦è¡Œã£ãŸã‘ã©çµæ§‹ã„ã‚ã„ã‚ã‚ã£ã¦è‰¯ã‹ã£ãŸã§ã™ã€‚ JetBrains è£½å“å…¨èˆ¬ã®ç´¹ä»‹ã¨ã„ã†æ„Ÿã˜ã§è‰¯ã‹ã£ãŸã€‚ JS ã«ã¤ã„ã¦ã¯ä»¥ä¸‹ã® tips çŸ¥ã‚‰ãªã‹ã£ãŸ! ãªã‚‹ã»ã©ãªãƒ¼ã€‚ IntelliJ ã« typescriptã®åž‹å®šç¾©ãƒ•ã‚¡ã‚¤ãƒ«èªã‚“ã§è£œå®Œã•ã›ã‚‹ã¨ã‹ã§ãã‚‹ã®ã‹â€¦â€¦ #jbnight â€” tokuhirom (@tokuhirom) November 22, 2016 File watchers ãƒ—ãƒ©ã‚°ã‚¤ãƒ³ã§ eslint ã‹ã‘ã‚‹ã®ãŒä¾¿
sugyan 2016/11/24
IntelliJ

java
ãƒªãƒ³ã‚¯
Lineã«ãŠã‘ã‚‹spring frameworkã®æ´»ç”¨
PostgreSQL13ã§ã®ãƒ¬ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³é–¢é€£ã®æ”¹å–„ã«ã¤ã„ã¦ï¼ˆç¬¬14å›žPostgreSQLã‚¢ãƒ³ã‚«ãƒ³ãƒ•ã‚¡ãƒ¬ãƒ³ã‚¹@ã‚ªãƒ³ãƒ©ã‚¤ãƒ³ï¼‰
sugyan 2016/11/19
LINE

java

spring

presentation
ãƒªãƒ³ã‚¯
Springã®èµ·å‹•æ™‚ã«å¥½ããªç”»åƒã‚’AAã«ã—ã¦è¡¨ç¤ºã™ã‚‹ - ãã®æ‰‹ã®å¹³ã¯å°»ã‚‚ã¤ã‹ã‚ã‚‹ã•
Spring Boot 1.4.1 1.4.0 (è¨‚æ£ã—ã¾ã—ãŸï¼Žè©³ç´°ã¯ id:dayflower ã•ã‚“ã®ã‚³ãƒ¡ãƒ³ãƒˆã‚’å‚ç…§ä¸‹ã•ã„) ã®æ©Ÿèƒ½ã¨ã—ã¦ï¼ŒSpringã®èµ·å‹•æ™‚ã«ä»»æ„ã®ç”»åƒã‚’AAã¨ã—ã¦è¡¨ç¤ºã§ãã‚‹æ©Ÿèƒ½ãŒè¿½åŠ ã•ã‚ŒãŸã‚ˆã†ã§ã™ï¼Ž ãªã‚“ã‹ã“ã“ã«æ›¸ã„ã¦ãŸï¼Ž www.infoq.com ã‚„ã‚Šæ–¹ã¯éžå¸¸ã«ç°¡å˜ã§ï¼Œ banner.jpgï¼Œbanner.pngã‚ã‚‹ã„ã¯banner.gifã¨ã„ã†åå‰ã®ç”»åƒãƒ•ã‚¡ã‚¤ãƒ«ã‚’/src/main/resourcesã®ç›´ä¸‹ã«ç½®ã (ã‚ã‚‹ã„ã¯banner.image.locationã§è¨å®šã—ãŸå ´æ‰€ã«ç½®ã) ä»¥ä¸Šï¼Žæ—©é€Ÿã‚„ã£ã¦ã¿ã¾ã—ã‚‡ã†ï¼Ž æ™®æ®µã®Springã®èµ·å‹•å¾Œã®ã‚¿ãƒ¼ãƒŸãƒŠãƒ«ã¨ã„ãˆã°ã“ã‚“ãªã®ã§ã—ãŸãŒâ€¦â€¦ ã“ã®æ©Ÿèƒ½ã‚’ä½¿ã†ã¨ã“ã®é€šã‚Šï¼ã€€ã¡ãªã¿ã«å…ƒç”»åƒã¯åƒ•ã®ã‚¢ã‚¤ã‚³ãƒ³ã®ã“ã‚Œã§ã™ï¼Ž è‹¥å¹²ãƒ›ãƒ©ãƒ¼æ„ŸãŒã‚ã‚‹â€¦â€¦ã¨æ€ã„ãã‚„é ç›®ã‹ã‚‰AAãŒä¸ã€…ã®å†ç¾åº¦ã§ã‚ã‚‹ã“ã¨ãŒã‚ã‹ã‚Šã¾ã™ï¼Žã™ã”ã„ï¼ å½“åˆã¯ã“ã®æ©Ÿèƒ½ã«
sugyan 2016/10/25
ç„¡é§„ã«ã™ã”ã„

java

spring

banner
ãƒªãƒ³ã‚¯
Java Casual #2 (2016/11/07 19:00ã€œ)
æ–°æ©Ÿèƒ½ æŠ€è¡“ã‚«ãƒ³ãƒ•ã‚¡ãƒ¬ãƒ³ã‚¹ã‚’ã‚ˆã‚Šè¦‹ã¤ã‘ã‚„ã™ãã€å‚åŠ ã—ã‚„ã™ãã™ã‚‹ãŸã‚ã®æ–°æ©Ÿèƒ½ã€Œã‚«ãƒ³ãƒ•ã‚¡ãƒ¬ãƒ³ã‚¹ç‰¹é›†ãƒšãƒ¼ã‚¸ã€ã‚’ãƒªãƒªãƒ¼ã‚¹ã—ã¾ã—ãŸã€‚ã€ŒæŠ€è¡“ã€ã‚„ã€Œãƒ†ãƒ¼ãƒžã€ãªã©ã®ãƒˆãƒ”ãƒƒã‚¯åˆ¥ã«æŽ¢ã›ã‚‹ã»ã‹ã€ç›´è¿‘é–‹å‚¬äºˆå®šã®ã‚«ãƒ³ãƒ•ã‚¡ãƒ¬ãƒ³ã‚¹ãŒä¸€è¦§ã§ç¢ºèªã§ãã¾ã™ã®ã§ã”æ´»ç”¨ãã ã•ã„ã€‚è©³ã—ã„æ©Ÿèƒ½èª¬æ˜Žã‚„æŽ²è¼‰æ–¹æ³•ã«ã¤ã„ã¦ã¯ã“ã¡ã‚‰ã‚’ã”ç¢ºèªãã ã•ã„ã€‚
sugyan 2016/10/12
java

techtalk
ãƒªãƒ³ã‚¯
java-handbook/collection/map.md at main Â· tokuhirom/java-handbook
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sugyan 2016/09/20
java
ãƒªãƒ³ã‚¯
https://github.com/tokuhirom/java-handbook/blob/master/collection/list.md
sugyan 2016/09/15
java
ãƒªãƒ³ã‚¯
java-handbook/database/mybatis.md at main Â· tokuhirom/java-handbook
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sugyan 2016/09/12
java

mybatis
ãƒªãƒ³ã‚¯
java-handbook/libraries/lombok.md at main Â· tokuhirom/java-handbook
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sugyan 2016/09/08
java

lombok
ãƒªãƒ³ã‚¯
undertow ã¨ graceful shutdown ã¨ - tokuhirom's blog
undertow ã¨ graceful shutdown ã¨ undertow ã‚’åˆ©ç”¨ã™ã‚‹äºˆå®šã¯ç‰¹ã«ãªã„ã®ã ãŒã€undertow ã ã¨ graceful shutdown ã¯ã©ã®ã‚ˆã†ã«å®Ÿç¾å¯èƒ½ãªã®ã ã‚ã†ã‹ã€ã¨ã„ã†ã“ã¨ãŒæ°—ã«ãªã£ãŸã®ã§èª¿ã¹ã¦ã¿ã¾ã—ãŸã€‚ ã“ã“ã§ã„ã† graceful shutdown ã¯ listen socket ã‚’ close ã—ãŸã†ãˆã§ã€å‡¦ç†ã‚’ã™ã¹ã¦æ£å¸¸ã«çµ‚äº†ã—ã€çµ‚äº†å¾Œã«ãƒ—ãƒã‚»ã‚¹ã‚’ exit ã™ã‚‹ã‚ˆã†ãªã‚‚ã®ã‚’æŒ‡ã—ã¦ã„ã¾ã™ã€‚ ã„ãã¤ã‹ãƒãƒžã‚Šã©ã“ã‚ãŒã‚ã‚‹ã®ã§æ³¨æ„ã€‚ undertow ã¯ãƒ‰ã‚ãƒ¥ãƒ¡ãƒ³ãƒˆãŒè²§å¼± ã©ã†ã‚‚ã€è²§å¼±ã§ã™ãã€‚ã€‚ã‚½ãƒ¼ã‚¹èªã‚ãªã„ã¨åŽ³ã—ã„ã€‚ã‚½ãƒ¼ã‚¹ã‹ javadoc çœºã‚ã¦æŽ¢ã™ã¨ã‹ã—ãªã„ã¨è¦‹ã¤ã‹ã‚‰ãªã„ã€‚åˆ©ç”¨æ–¹æ³•ã‚‚ã®ã£ã¦ãªã„ã‹ã‚‰ãƒ†ã‚¹ãƒˆã‹ã‚‰æŽ¢ã™ã¨ã‹ã—ãªã„ã¨ã„ã‘ãªã„ã€‚ DeploymentManager.stop() ã‚’å‘¼ã°ãªã„ã¨ Servlet#destroy ãŒå‘¼ã°ã‚Œãª
sugyan 2016/07/27
Java

Undertow
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sugyan 2016/04/13
java
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sugyan 2016/04/08
java

DI
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sugyan 2015/12/26
MySQL

java

JDBC
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sugyan 2015/12/09
java

binary
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[mac][osx][java][mysql] JDBC ã§ mysql ã«ã¤ãªã”ã†ã¨ã—ãŸã‚‰ "Communications link failure" ã®ã‚¨ãƒ©ãƒ¼ãŒå‡ºã‚‹ã¨ã - tokuhirom's blog
[mac][osx][java][mysql] JDBC ã§ mysql ã«ã¤ãªã”ã†ã¨ã—ãŸã‚‰ "Communications link failure" ã®ã‚¨ãƒ©ãƒ¼ãŒå‡ºã‚‹ã¨ã gradle ã§ãƒ†ã‚¹ãƒˆã‚’å‹•ã‹ã—ã¦ã„ãŸã‚‰ã€é€”ä¸ã§ JDBC ãŒ "Communications link failure" ã¨è¨€ã£ã¦æ»ã¬å ´åˆãŒã‚ã‚‹ã€‚ ã“ã‚Œã¯ com.mysql.jdbc.exceptions.jdbc4.CommunicationsException ã®ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ã ãŒã€ã“ã®ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸è‡ªä½“ã¯ã€socket ã‚’ connect ã™ã‚‹ã“ã¨ã«ã—ãŸã¨ã„ã†ã“ã¨ã‚’ç¤ºã™ã®ã¿ã§ã€ãã‚Œä»¥ä¸Šã®æƒ…å ±ãŒç„¡ã„ã€‚ãŸã ã“ã®ã‚¨ãƒ©ãƒ¼è‡ªä½“ã¯ã€OS ãƒ¬ãƒ™ãƒ«ã§ã‚¨ãƒ©ãƒ¼è¿”ã—ã¦ç™ºç”Ÿã™ã‚‹ã“ã¨ãŒã»ã¨ã‚“ã©ãªã®ã§ã€strace -f ã¨ã‹ã—ã¦èª¿ã¹ã‚Œã°ã‚ˆã„ã§ã™ãã€‚ ã‚ã‚ŠãŒã¡ãªã®ã¯ bind-address ã‚’ 127.0.0.1 ã«è¨å®šã—ã¦ã„ã‚‹ã®ã«ä»–ã®ã‚µãƒ¼ãƒãƒ¼
sugyan 2015/09/28
java

MySQL

mac
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sugyan 2015/08/03
java
ãƒªãƒ³ã‚¯
Java 8 ã® DateTimeFormatter ã®æ›œæ—¥ç‰ã®ãƒ•ã‚©ãƒ¼ãƒžãƒƒãƒˆã«ã¤ã„ã¦ - tokuhirom's blog
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sugyan 2015/07/13
java

datetime

format
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