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ãƒ¢ãƒ€ãƒ³ãªJavaã®æ›¸ãæ–¹ã€‚Immutable Javaã€Nullå®‰å…¨ã‚’è€ƒãˆã¦ã¿ã‚‹ã€‚
Javaã‚‚Java8ã§streamå‡¦ç†ã‚„ãƒ©ãƒ ãƒ€ã€Optionalã®åž‹ãªã©ãŒè¿½åŠ ã•ã‚Œãƒ¢ãƒ€ãƒ³ãªãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ãŒå¹¾ã¤ã‹æ›¸ã‘ã‚‹ã‚ˆã†ãªæ©Ÿæ§‹ãŒé©å¿œã•ã‚Œã¦ãã¾ã—ãŸã€‚ ã—ã‹ã—ã€Javaã§æ›¸ããƒ—ãƒã‚°ãƒ©ãƒžãƒ¼ã¯ãƒ¢ãƒ€ãƒ³ãªå®Ÿè£…ã™ã‚‹æ–‡åŒ–ã¯æµ¸é€ã—ã¦ã„ã‚‹ã®ã§ã—ã‚‡ã†ã‹ï¼Ÿ ä»Šå›žã¯ãƒ¢ãƒ€ãƒ³ãªå®Ÿè£…ã®ä»•æ–¹ã¨ã—ã¦ã€ã€ŒImmutable Programmingã€ã¨ã€Œnullã®æ‰±ã„ã«ã¤ã„ã¦ã€ã«ã¤ã„ã¦æ›¸ã„ã¦ã¿ã‚ˆã†ã¨æ€ã„ã¾ã™ã€‚ å‰æ Webã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚µãƒ¼ãƒã‚’å®Ÿè£…ã™ã‚‹æ™‚ã‚’æƒ³å®šã—ã¦ã„ã¾ã™ã€‚ ã‚‚ã¡ã‚ã‚“ãƒã‚¤ãƒ†ã‚£ãƒ–ã®å®Ÿè£…ã®ã¨ãã«ã‚‚é©å¿œã•ã‚Œã‚‹éƒ¨åˆ†ãŒå¤šã„ã§ã™ã€‚ Java8ã®æ›¸ãæ–¹ã§èª¬æ˜Žã—ã¾ã™ã€‚ Immutable Programming(ã‚¤ãƒŸãƒ¥ãƒ¼ã‚¿ãƒ–ãƒ«ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°)ã¨ã¯ å‡„ãç°¡å˜ã«èª¬æ˜Žã™ã‚‹ã¨ã€å¤‰æ•°ã«å†ä»£å…¥ã—ãªã„ã¨ã„ã†ã“ã¨ã§ã™ã€‚ å…¨ã¦finalã‚’ä»˜ã‘ã¦ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã™ã‚‹ã‚ˆã†ãªã‚‚ã®ã§ã™ãã€‚ ã¾ã ã€ã‚„ã£ãŸã“ã¨ãŒãªã„äººã¯ãã‚“ãªã“ã¨ãŒå‡ºæ¥ã‚‹ã®ã‹ï¼Ÿã¨ã„ã†ã“ã¨ã‚’
snjx 2017/09/08
java

java8

lombok

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Lombok ã‚«ãƒ†ã‚´ãƒªãƒ¼ã®è¨˜äº‹ä¸€è¦§ - è¦šãˆãŸã‚‰æ›¸ã
Lombokã®@Builderã‚¢ãƒŽãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ã¯ä½•ã‹ã¨ä¾¿åˆ©ãªã®ã§ã™ãŒã€ãƒ—ãƒãƒ‘ãƒ†ã‚£ã¸å€¤ã‚’ã‚»ãƒƒãƒˆã™ã‚‹ãŸã‚ã®Builderã®ãƒ¡ã‚½ãƒƒãƒ‰ã‚’å‘¼ã°ãªã„ã¨å¯¾å¿œã™ã‚‹ãƒ•ã‚£ãƒ¼ãƒ«ãƒ‰ãŒåˆæœŸå€¤ï¼ˆæ•°å€¤ãªã‚‰0, booleanãªã‚‰false, ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆãªã‚‰nullï¼‰ã«ãªã£ã¦ã—ã¾ã„ã¾ã™ã€‚ ã“ã®ã‚ãŸã‚Šã®å‹•ãã‚’v1.16.â€¦
snjx 2017/09/04
ã‚·ã‚¹ãƒ†ãƒ é–‹ç™º

è€ƒå¯Ÿ

è³‡æ–™

æŠ€è¡“

java

lombok

ã“ã‚Œã¯ã™ã”ã„
ãƒªãƒ³ã‚¯
Lombok - @Log - è¦šãˆãŸã‚‰æ›¸ã
Lombokã‹ã‚‰æä¾›ã•ã‚Œã‚‹ãƒã‚®ãƒ³ã‚°ï¼ˆãƒã‚¬ãƒ¼ï¼‰ç”¨ã®ã‚¢ãƒŽãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ã®ã‚µãƒ³ãƒ—ãƒ«ã§ã™ https://projectlombok.org/features/Log.html ãƒã‚¬ãƒ¼ã‚’åˆ©ç”¨ã™ã‚‹éš›ã®æ™®é€šã®ã‚³ãƒ¼ãƒ‰ æ¥å‹™ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã§ã€ãƒã‚¬ãƒ¼ã‚’åˆ©ç”¨ã—ã¦ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ãƒã‚°ã‚’å‡ºåŠ›ã™ã‚‹ã¨ã„ã†ã®ã¯ã”ãã”ãä¸€èˆ¬çš„ã ã¨æ€ã„ã¾ã™ã€‚ ãã®éš›ã«ã¯é€šå¸¸ä»¥ä¸‹ã®ã‚ˆã†ãªã‚³ãƒ¼ãƒ‰ã‚’æ›¸ãã“ã¨ã«ãªã‚‹ã¨æ€ã„ã¾ã™ï¼ˆslf4jã‚’åˆ©ç”¨ã™ã‚‹å ´åˆï¼‰ã€‚ public class BusinessLogic { private static final org.slf4j.Logger log = org.slf4j.LoggerFactory.getLogger(BusinessLogic.class); public void doSomething(String param) { log.info("doSomething start [pa
snjx 2017/05/09
log

lombok

java

webã‚µãƒ¼ãƒ“ã‚¹

ã‚·ã‚¹ãƒ†ãƒ é–‹ç™º

springboot

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æ›¸ãã‹ã‘ã®Lombokè§£èª¬
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snjx 2017/05/08
lombok

java

ã‚·ã‚¹ãƒ†ãƒ é–‹ç™º
ãƒªãƒ³ã‚¯
lombok.valã‚’ä½¿ã£ã¦ãƒãƒ¼ã‚«ãƒ«å¤‰æ•°ã®åž‹å®£è¨€ã‚’çœç•¥ã™ã‚‹ - Qiita
ãƒãƒ¼ã‚«ãƒ«å¤‰æ•°ã®åž‹å®£è¨€ã‚’çœç•¥ lombokã¯ã€å°Žå…¥ã™ã‚‹ã¨ã‚¢ãƒŽãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ã§ã„ãã¤ã‹ã®ã‚³ãƒ¼ãƒ‰ã‚„å®£è¨€ã‚’çœç•¥ã§ãã‚‹å¼·åŠ›ãªãƒ©ã‚¤ãƒ–ãƒ©ãƒªã§ã™ã€‚Javaã¯ãƒãƒ¼ã‚«ãƒ«å¤‰æ•°ã‚‚ãã¡ã‚“ã¨åž‹å®£è¨€ã—ã¾ã™ãŒã€ã“ã‚Œã‚‚çœç•¥ãŒå¯èƒ½ã«ãªã‚Šã¾ã™ã€‚ ãƒãƒ¼ã‚«ãƒ«å¤‰æ•°ã¯valã§ç•¥è¨˜å¯èƒ½ ä¾‹ãˆã°ãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã«å¯¾ã—ã¦æ¤œç´¢æ¡ä»¶ã‚’æŒ‡å®šã—ã€æ¤œç´¢ã—ãŸçµæžœã‚’è¿”ã™Serviceã‚¯ãƒ©ã‚¹ã¨ã€æ¤œç´¢çµæžœã‚’ä¸€éƒ¨åŠ å·¥ã—ã¦ã‹ã‚‰ç”»é¢ã¸å‡ºåŠ›ã™ã‚‹Actionã‚¯ãƒ©ã‚¹ã€ã“ã®2ã¤ã‚’ä½œã‚‹ã¨ã—ã¾ã™ã€‚ ã¾ãŸã€Serviceã‚¯ãƒ©ã‚¹ãŒè¿”ã™æ¤œç´¢çµæžœã¯ã€List<Map<String,Object>>ã§è¿”ã•ã‚Œã‚‹ã¨ã—ã¾ã™ã€‚ ã“ã®ã¨ãã€é€šå¸¸ã®Actionã‚¯ãƒ©ã‚¹ã¯æ¬¡ã®ã‚ˆã†ã«ãªã‚‹ã§ã—ã‚‡ã†ã€‚ â€»Actionã‚¯ãƒ©ã‚¹ã‹ã‚‰ç”»é¢ã¸å€¤ã‚’æ¸¡ã™å‡¦ç†ã€ãªã‚‰ã³ã«åŠ å·¥å‡¦ç†ã¯çœç•¥ã—ã¦ã„ã¾ã™ã€‚
snjx 2016/06/20
java

lombok

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ã‚·ã‚¹ãƒ†ãƒ é–‹ç™º
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Lombokã®ãƒãƒ¥ãƒ¼ãƒˆãƒªã‚¢ãƒ«è¨˜äº‹Reducing Boilerplate Code with Project Lombokã‚’ãƒ†ã‚ãƒˆãƒ¼ã«è¨³ã—ãŸ - kagamihogeã®æ—¥è¨˜
Lombokã®ãƒãƒ¥ãƒ¼ãƒˆãƒªã‚¢ãƒ«ã® http://jnb.ociweb.com/jnb/jnbJan2010.html ã‚’ãƒ†ã‚ãƒˆãƒ¼ã«è¨³ã—ãŸã€‚Lombokå‹‰å¼·ã®å‰¯ç”£ç‰©ã«éŽãŽãªã„ã‚“ã§ã€å…¨ãã¨ã„ã£ã¦ã„ã„ã»ã©æŽ¨æ•²ã—ã¦ãªã„ã—ã€å“è³ªã«ã¤ã„ã¦ã¯ãŠå¯Ÿã—ã€‚ã“ã‚Œèªã¾ãªãã¦ã‚‚ä½¿ãˆã‚‹ã—ã€æ—¥æœ¬èªžã§è§£èª¬ã—ã¦ã‚‹äººã„ã‚‹ã—ã€ã¾ãå¤šå°‘ã¯ãï¼Ÿ ãªãŠã€æœ¬æ–‡ä¸ã®ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã‚„ç”»åƒã¯åŽŸæ–‡ã®ã‚‚ã®ã‚’ãã®ã¾ã¾ã‚³ãƒ”ãƒšã—ã¦ã„ã¾ã™ã€‚ Project Lombokã«ã‚ˆã‚‹ãƒœã‚¤ãƒ©ãƒ¼ãƒ—ãƒ¬ãƒ¼ãƒˆã®å‰Šæ¸› ã¯ã˜ã‚ã« ãƒœã‚¤ãƒ©ãƒ¼ãƒ—ãƒ¬ãƒ¼ãƒˆï¼ˆ"Boilerplate"ï¼‰ã¨ã¯ã€ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã®æ§˜ã€…ãªç®‡æ‰€ã«ç¹°ã‚Šè¿”ã—å‡ºç¾ã™ã‚‹ä¸Šã«ã¡ã‚‡ã£ã¨ãšã¤ç•°ãªã‚‹ã‚³ãƒ¼ãƒ‰ã‚’èª¬æ˜Žã™ã‚‹ã¨ãã«ä½¿ã‚ã‚Œã‚‹ç”¨èªžã§ã™ã€‚Javaè¨€èªžã«å¯¾ã™ã‚‹æ‰¹åˆ¤ã¨ã—ã¦ã—ã‚‡ã£ã¡ã‚…ã†èžã‹ã‚Œã‚‹ã‚‚ã®ã®ä¸€ã¤ãŒã‚³ãƒ¼ãƒ‰ã®é‡ã§ã‚ã‚Šã€ãã†ã—ãŸã‚³ãƒ¼ãƒ‰ã¯ãŸã„ã¦ã„ã®ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã§ä¼¼é€šã£ã¦ã„ã‚‹ã‚‚ã®ã§ã™ã€‚ã“ã®å•é¡Œã¯å„ç¨®ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã®è¨è¨ˆæ–¹é‡ã®çµæžœã§ã¯ã‚ã‚‹ã®ã§
snjx 2016/04/13
lombokãªã‚“ã¦ã‚ã‚‹ã®ã‹ã€‚

lombok

java

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Javaç‰¹æœ‰ã®å†—é•·ãªã‚³ãƒ¼ãƒ‰ã‚’ç°¡æ½”ã«è¨˜è¿°ã™ã‚‹ã€ŒLombokã€
Javaã¯è¨€èªžä»•æ§˜ä¸Šã®åˆ¶ç´„ã«ã‚ˆã‚Šã€ãƒœã‚¤ãƒ©ãƒ¼ãƒ—ãƒ¬ãƒ¼ãƒˆã‚³ãƒ¼ãƒ‰ï¼ˆè‡ªæ˜Žã ãŒçœç•¥ã§ããªã„ãŠæ±ºã¾ã‚Šã®ã‚³ãƒ¼ãƒ‰æ–ç‰‡ï¼‰ãŒã„ãã¤ã‹ã‚ã‚Šã¾ã™ã€‚ä¾‹ãˆã°ã€ãƒ¡ãƒ³ãƒå¤‰æ•°ã‚’èªã¿æ›¸ãã™ã‚‹ã ã‘ã®getterãƒ¡ã‚½ãƒƒãƒ‰ã‚„setterãƒ¡ã‚½ãƒƒãƒ‰ãŒã“ã‚Œã«ã‚ãŸã‚Šã¾ã™ã€‚Lombokã‚’ä½¿ãˆã°ã€ã“ã‚Œã‚‰Javaç‰¹æœ‰ã®å†—é•·ãªã‚³ãƒ¼ãƒ‰ã‚’ã€è¦‹ã‚„ã™ãç°¡æ½”ãªã‚‚ã®ã«ã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚æœ¬è¨˜äº‹ã§ã¯Lombokã‚’åˆ©ç”¨ã—ã¦ã€ãƒœã‚¤ãƒ©ãƒ¼ãƒ—ãƒ¬ãƒ¼ãƒˆã‚³ãƒ¼ãƒ‰ã‚’ã‚·ãƒ³ãƒ—ãƒ«ã«è¨˜è¿°ã™ã‚‹æ–¹æ³•ã«ã¤ã„ã¦è§£èª¬ã—ã¾ã™ã€‚ ã¯ã˜ã‚ã« ä»Šã‚„Javaé–‹ç™ºã«å¿…è¦ä¸å¯æ¬ ã¨ãªã£ãŸã‚‚ã®ã®ä¸€ã¤ã«ã€IDEã®å˜åœ¨ãŒã‚ã‚Šã¾ã™ã€‚ä¾‹ãˆã°Eclipseã§ã¯ãƒ¡ãƒ³ãƒå¤‰æ•°ã•ãˆå®šç¾©ã™ã‚Œã°ã€getter/setterã®è‡ªå‹•ç”Ÿæˆã‚„ã€equalsãƒ¡ã‚½ãƒƒãƒ‰ã‚„hashCodeãƒ¡ã‚½ãƒƒãƒ‰ã€toStringãƒ¡ã‚½ãƒƒãƒ‰ãªã©ã®è‡ªå‹•ç”Ÿæˆãªã©ã•ã¾ã–ã¾ãªå ´é¢ã§ã‚³ãƒ¼ãƒ‡ã‚£ãƒ³ã‚°ã‚’å¼·åŠ›ã«ã‚µãƒãƒ¼ãƒˆã—ã¦ãã‚Œã¾ã™ã€‚ ã“ã‚Œã¯å¤§å¤‰ä¾¿åˆ©ãªæ©Ÿèƒ½ã§ã™ãŒã€è£ã‚’è¿”ã›ã°Javaã®è¨€èªžä»•æ§˜
snjx 2015/11/16
eclipse

java

IDE

lombok

ã‚·ã‚¹ãƒ†ãƒ é–‹ç™º

ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°

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