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sakura-1 id:sakura-1

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Scalaçš„ãªè€ƒãˆæ–¹ - ScalaãŒã¨ã£ã¤ãã«ãã„ã¨æ€ã£ã¦ã„ã‚‹äººã¸ - ( ê’ªâŒ“ê’ª) ã‚†ã‚‹ã‚ˆã‚æ—¥è¨˜
Javaãªäººã‹ã‚‰è¦‹ã‚‹ã¨ã€ã€ŒScalaã£ã¦é›£ã—ã„ã€ã£ã¦ã‚¤ãƒ¡ãƒ¼ã‚¸ãŒã‚ã‚Šã¾ã™ãã€‚ä¿ºã‚‚æœ€åˆã¯ãã†æ€ã£ã¦ã¾ã—ãŸã€‚ä»Šã‚‚ã§ã™ã‘ã©ã€‚ ã§ã€è€ƒãˆã¦ã¿ãŸã‚“ã§ã™ãŒã€ä½•ãŒé›£ã—ã„ã£ã¦è€ƒãˆæ–¹ãƒ»ã‚¤ãƒ‡ã‚£ã‚ªãƒ ã«ãªã˜ã¿ãŒãªã„ã®ãŒåŽŸå› ã‹ã¨æ€ã£ãŸã‚“ã§ã™ã€‚ ã“ã“ã§ã¯ã€ä¿ºãŒä»Šã¾ã§Scalaã‚’ã‚„ã£ã¦ãã¦å¾—ãŸè€ƒãˆæ–¹ã‚’ç´¹ä»‹ã—ã¾ã™ã€‚ã€ŒScalaã‚’ã¡ã‚‡ã£ã¨ã‚„ã£ã¦ã¿ãŸã‚“ã ã‘ã©ã€ã¨ã£ã¤ãã«ããã¦â€¦ã€ã¨æ€ã‚ã‚Œã¦ã„ã‚‹æ–¹ã¯ã€ãœã²ã”ä¸€èªãã ã•ã„ã€‚ å‚è€ƒè³‡æ–™: Scalaå…¥é–€ - Scalaã§æ›¸ãã¯ã˜ã‚ãŸJavaä½¿ã„å‘ã‘ - Scalaå‹‰å¼·ä¼šï¼ æ±åŒ— Dropbox - 404 ç¥žã¯è¨€ã‚ã‚ŒãŸã€‚ã€Œãƒªã‚¹ãƒˆã‚ã‚Œã€‚ã€ Lisperã¯ã€ãƒªã‚¹ãƒˆã‚’ã©ã†ä½œã‚‹ã‹ã‚’ã¾ãšè€ƒãˆã‚‹ã‚‰ã—ã„ã§ã™ã€‚é©åˆ‡ãªãƒªã‚¹ãƒˆãŒå‡ºæ¥ãŸã‚‰ã€ãƒ—ãƒã‚°ãƒ©ãƒ ã¯ã‚‚ã†ã§ããŸã‚‚åŒç„¶ã ã¨ã€‚åŒã˜è€ƒãˆæ–¹ã¯ã€Scalaã§ã‚‚é€šç”¨ã™ã‚‹ã¨æ€ã„ã¾ã™ã€‚ å¤§ã¾ã‹ã«ã€ã“ã‚“ãªæµã‚Œã§è€ƒãˆã¦ã¾ã™ã€‚(ãƒªã‚¹ãƒˆã¯æœ€åˆã‹ã‚‰ä¸Žãˆã‚‰ã‚Œã‚‹ã“ã¨ã‚‚ã‚ã‚‹ã§ã—ã‚‡ã†) ã€Œ
sakura-1 2010/03/18
å†…å®¹ãŒã¾ã¨ã¾ã£ã¦ã¦ã‚ˆã¿ã‚„ã™ã‹ã£ãŸã§ã™ã€‚

programming

java

scala
ãƒªãƒ³ã‚¯
è‡ªå·±è¨€åŠã™ã‚‹ã‚¸ã‚§ãƒãƒªã‚¯ã‚¹
å…ˆæ—¥ã€Strategyã®ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹ã‚’enumã§æ‰±ã†ã§å–ã‚Šä¸Šã’ãŸã‚ˆã†ã«Javaã®enumã¯ãƒ¡ã‚½ãƒƒãƒ‰ã‚’å®£è¨€ã™ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚JavaSE5.0ã§enumã‚’è¿½åŠ ã™ã‚‹éš›ã€æ—¢å˜ã®åž‹ã‚·ã‚¹ãƒ†ãƒ ã‚’åˆ©ç”¨ã—ã¦ä½œã‚‰ã‚Œã¦ã„ã‚‹ãŸã‚ã€Javaã®enumã¯ã‚¯ãƒ©ã‚¹ãªã®ã§ã™ã€‚ ã“ã®enumã®è¦ªã‚¯ãƒ©ã‚¹ã¨ãªã‚‹ã®ãŒjava.lang.Enumã‚¯ãƒ©ã‚¹ãªã®ã§ã™ãŒã€å®£è¨€ãŒå¤‰ã‚ã£ã¦ã„ã¦ã€ã‚¸ã‚§ãƒãƒªã‚¯ã‚¹ã®åž‹ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ãŒè‡ªèº«ã®æ‹¡å¼µãªã®ã§ã™ãã€‚ Enum<EÂ extendsÂ Enum<E>> ã“ã‚Œã¨åŒã˜ã‚ˆã†ãªæ§‹é€ ã‚’æŒã¤ã‚¯ãƒ©ã‚¹ã‚’ä½œã£ãŸå ´åˆã€åž‹å®‰å…¨ã«ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹åŒ–ã§ãã¾ã›ã‚“ã€‚ publicÂ classÂ Hoge<HÂ extendsÂ Hoge<H>>Â { publicÂ staticÂ voidÂ main(String[]Â args)Â { Hoge<Hoge<Hoge<...>>>Â hogeÂ =Â newÂ Hoge<Hoge<Hoge<...>>>()
sakura-1 2010/01/12
java

design

recursive

generics
ãƒªãƒ³ã‚¯
Javaãƒ¡ãƒ¢ç›®æ¬¡(Hishidama's Java Memo)
Javaã®åŸºç¤Žï¼ˆã¨ã„ã†ã‹å…¥é–€çš„ãªå†…å®¹ï¼‰ã‹ã‚‰ ã¡ã‚‡ã£ã¨ã—ãŸå¿œç”¨ã¾ã§ã‚’ãƒ¡ãƒ¢ã—ã¦ã„ã¾ã™ã€‚ å˜ç´”ã«Javaã¨è¨€ã£ã¦ã‚‚ã€å ´åˆã«ã‚ˆã£ã¦ã‚½ãƒ¼ã‚¹ã‚’æ›¸ãéš›ã®æ–‡æ³•ãƒ»ãƒ©ã‚¤ãƒ–ãƒ©ãƒªï¼ˆã‚¯ãƒ©ã‚¹ï¼‰ã®ä½¿ç”¨æ–¹æ³•ãƒ»GCï¼ˆã‚¬ãƒ™ãƒ¼ã‚¸ã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ï¼‰ç‰ã®JavaVMã®æ©Ÿæ§‹/å‹•ä½œãªã©æ§˜ã€…ãªäº‹æŸ„ã‚’å«ã¿ã¾ã™ã€‚ ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ãƒ»å®Ÿè¡Œé–¢é€£ [/2024-09-22] æ–‡æ³•é–¢é€£ [/2024-09-23] ãƒ©ã‚¤ãƒ–ãƒ©ãƒªãƒ¼é–¢é€£ [/2024-09-25] ã‚µãƒ¼ãƒ‰ãƒ‘ãƒ¼ãƒ†ã‚£ãƒ¼é–¢é€£ [/2022-11-11] å®šçŸ³ [/2021-03-21] æ–°æ©Ÿèƒ½ [/2024-09-22] ãƒ—ãƒ¬ãƒ“ãƒ¥ãƒ¼ç‰ˆæ©Ÿèƒ½ [/2024-10-28] ã‚ãƒ¼ãƒ¯ãƒ¼ãƒ‰ï¼ˆæŠœç²‹ï¼‰ä¸€è¦§ å‚è€ƒæ›¸
sakura-1 2009/10/30
[ä¾¿åˆ©] javaã®ãƒã‚¤ãƒ³ãƒˆã‚’ã—ã‚ŠãŸã„ã¨ãã«ä¾¿åˆ©

java
ãƒªãƒ³ã‚¯
ãƒªãƒ•ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³
ä½œæˆ 2002/1/12 ãªã‚“ã¨ãªããƒªãƒ•ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ã«ã¤ã„ã¦ç°¡å˜ã«ã¾ã¨ã‚ã¦ã¿ã‚ˆã†ã¨æ€ã„ã¾ã™ã€‚ ãƒªãƒ•ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ã¨ã¯ï¼Ÿ ã¨ã‚Šã‚ãˆãšå‹•ã‹ã—ã¦ã¿ã‚‹(ã‚ãã¶) ä¾‹1:ToStringer ä¾‹2:FormatUtil DynamicProxy 1.4ã¯ã©ã‚“ã ã‘é€Ÿã„ï¼Ÿ(æ›¸ã‹ãªã„ã†ã¡ã«1.5ã«ãªã‚Šãã†) ãƒªãƒ•ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ã¨ã¯ï¼Ÿ ãƒªãƒ•ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³(Reflection)ã¯ã€ Javaã‚¯ãƒ©ã‚¹ã‹ã‚‰ãƒ•ã‚£ãƒ¼ãƒ«ãƒ‰ã‚„ãƒ¡ã‚½ãƒƒãƒ‰ãªã©ã®æƒ…å ±ã‚’å–å¾—ã™ã‚‹ APIã§ã™ã€‚ å–å¾—ã—ãŸãƒ¡ã‚½ãƒƒãƒ‰ã‚’å®Ÿè¡Œã™ã‚‹ã“ã¨ã‚‚ã§ãã¾ã™ã€‚ APIã¯java.lang.reflectãƒ‘ãƒƒã‚±ãƒ¼ã‚¸ã«ã‚ã‚Šã€ ã‚¯ãƒ©ã‚¹ã‚‚å°‘ãªãã€ã¡ã‚‡ã£ã¨ä½¿ã†åˆ†ã«ã¯ã€ãã‚Œã»ã©é›£ã—ãã‚ã‚Šã¾ã›ã‚“ã€‚ ä½¿ã‚ã‚Œã‚‹å ´é¢ã¯ã€ä¸»ã«ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ã€é–‹ç™ºãƒ„ãƒ¼ãƒ« ã ã¨æ€ã‚ã‚Œã¾ã™ãŒã€ã¡ã‚‡ã£ã¨ã—ãŸãƒ¦ãƒ¼ãƒ†ã‚£ãƒªãƒ†ã‚£ãƒ¼ã‚¯ãƒ©ã‚¹ã§ã‚‚ ä½¿ã†ã¨ä¾¿åˆ©ãªå ´åˆã‚‚ã‚ã‚Šã¾ã™ã€‚ ä½¿ã†ã¨ä¾¿åˆ©ãªã‚“ã§ã™ãŒã€ã‚³ãƒ¼ãƒ‰ãŒè¤‡é›‘ã«ãªã‚‹ (ã—ã‹ã‚‚ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã‚„ãƒªãƒ•
sakura-1 2009/10/28
[refrect] [ãƒªãƒ•ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³]

java
ãƒªãƒ³ã‚¯
ObserveEclipse - GEF
2005/01/07ï¼šPDEã«ãƒªã‚½ãƒ¼ã‚¹ãƒ»ãƒžãƒ¼ã‚«ãƒ¼ã‚’ä½¿ç”¨ã™ã‚‹ã‚’è¿½åŠ ã€‚åˆã€RCPã‚’ä½¿ç”¨ã—ãŸã‚¹ã‚¿ãƒ³ãƒ‰ã‚¢ãƒãƒ³GEFã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã§ã‚½ãƒ¼ã‚¹ã®ä¸€éƒ¨(ãƒ‘ãƒ¼ã‚¹ãƒšã‚¯ãƒ†ã‚£ãƒ–ãƒ»ãƒ•ã‚¡ã‚¯ãƒˆãƒªãƒ»ã‚¯ãƒ©ã‚¹)ãŒæŠœã‘ã¦ã„ãŸã®ã‚’ä¿®æ£ã€‚ ã‚‚ã£ã¨æ—©ãã«æ›´æ–°ã™ã‚‹ã¯ãšã§ã—ãŸãŒã€ãƒãƒ¼ãƒ‰ãƒ‡ã‚£ã‚¹ã‚¯ãŒå£Šã‚Œã¦ã—ã¾ã£ãŸã‚‚ã®ã§å¹´ã‚’è¶Šã—ã¦ã—ã¾ã„ã¾ã—ãŸâ€¦ã€‚
sakura-1 2009/10/04
java
ãƒªãƒ³ã‚¯
GEFã§ã‚°ãƒ©ãƒ•ã‚£ãƒƒã‚¯ç·¨é›†ãƒ—ãƒ©ã‚°ã‚¤ãƒ³ã‚’ä½œã‚‹
ã¯ã˜ã‚ã« GEFï¼ˆGraphical Editing Frameworkï¼‰ã¯ã€ãã®åã®é€šã‚Šã€ãƒ¢ãƒ‡ãƒ«ã‚’ã€Œã‚°ãƒ©ãƒ•ã‚£ã‚«ãƒ«ã€ã«ã€Œç·¨é›†ã€ã™ã‚‹ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ï¼ˆã¾ãŸã¯ãƒ—ãƒ©ã‚°ã‚¤ãƒ³ï¼‰ã‚’ä½œæˆã™ã‚‹ãŸã‚ã®ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ã§ã™ã€‚ã“ã®è¨˜äº‹ã§ã¯ã€å˜ç´”ãªGEFã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã®ä½œæˆã‚’é€šã—ã¦ã€GEFã®æ¦‚ç•¥ã¨ã€ãã®ä½¿ç”¨æ³•ã‚’èª¬æ˜Žã—ã¾ã™ã€‚ å¯¾è±¡èªè€… Eclipseãƒ—ãƒ©ã‚°ã‚¤ãƒ³ã€ãŠã‚ˆã³Draw2Dã‚’ä½¿ç”¨ã—ãŸã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚’ä½œæˆã—ãŸã“ã¨ãŒã‚ã‚‹æ–¹ã€‚Draw2Dã€ã¾ãŸã¯Eclipseã®ãƒ—ãƒ©ã‚°ã‚¤ãƒ³ã«ã¤ã„ã¦ã¯ã€Eclipseã®ãƒ˜ãƒ«ãƒ—ã€ãŠã‚ˆã³APIãƒ‰ã‚ãƒ¥ãƒ¡ãƒ³ãƒˆã‚’å‚ç…§ã—ã¦ãã ã•ã„ã€‚ã¾ãŸã€Draw2Dã«é–¢ã™ã‚‹è©³ç´°ã«ã¤ã„ã¦ã¯ã€GEF SDKã«ä»˜å±žã™ã‚‹Draw2Dã®ãƒ—ãƒã‚°ãƒ©ãƒžãƒ¼ã‚ºãƒ»ã‚¬ã‚¤ãƒ‰ã‚’å‚ç…§ã—ã¦ãã ã•ã„ã€‚ å¿…è¦ãªç’°å¢ƒ ã‚µãƒ³ãƒ—ãƒ«ã¯ã€Eclipse SDK 3.0.1ã€ãŠã‚ˆã³GEF SDK 3.0.1ã‚’ä½¿ç”¨ã—ã¦ä½œæˆã—ã¾ã—ãŸã€‚ãã‚Œä»¥å‰ã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã§ã¯å‹•ä½œ
sakura-1 2009/10/04
java
ãƒªãƒ³ã‚¯
Javaå®šæ•°ãƒ¡ãƒ¢(Hishidama's Java Constant Memo)
ã‚¨ã‚¹ã‚±ãƒ¼ãƒ—ã‚·ãƒ¼ã‚±ãƒ³ã‚¹ã¨Unicodeã‚¨ã‚¹ã‚±ãƒ¼ãƒ—ã¯ä¼¼ã¦éžãªã‚‹ã‚‚ã®ã€‚[2008-08-30] â†’å‡¦ç†ã®å·®ç•° ä¸å¤‰ã®å¤‰æ•° finalã§å®£è¨€ã—ã¦åˆæœŸå€¤ã‚’ä¸ŽãˆãŸå¤‰æ•°ã¯ã€å®šæ•°ã¨ã—ã¦æ‰±ãˆã‚‹ã€‚[2008-06-22] ãªãŠã€å®šæ•°ã¨ã—ã¦æ‰±ã†å ´åˆã¯ã€å¤‰æ•°åã¯å…¨ã¦å¤§æ–‡å—ã«ã™ã‚‹ã®ãŒæ…£ä¾‹ã€‚ public static final int BASE_YEAR = 1970; ã“ã®å¤‰æ•°ã«ã¯å¾Œã‹ã‚‰å€¤ã‚’ä»£å…¥ã™ã‚‹ã“ã¨ãŒå‡ºæ¥ãªã„ã€‚ï¼ˆfinalãŒä»˜ã„ã¦ã„ã‚‹ã¨ã€ä»£å…¥ã§ããªããªã‚‹ï¼‰ ä»£å…¥ã§ããªã„â†’å€¤ãŒä¸å¤‰ï¼ˆå›ºå®šï¼‰â†’å®šæ•° â†’switchæ–‡ã§ä½¿ã†å ´åˆã®æ³¨æ„ â†’ä»–è¨€èªžã®å®šæ•°ã®å®šç¾©æ–¹æ³• ãŸã ã—ã€ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆï¼ˆå‚ç…§åž‹ï¼‰ã®å ´åˆã¯ã€å¿…ãšã—ã‚‚å›ºå®šï¼ˆä¸å¤‰ï¼‰ã¨ã„ã†ã‚ã‘ã§ã¯ãªã„ã€‚ final Map SAMPLE_MAP = new HashMap(); å¤‰æ•°SAMPLE_MAPã«ã¯æ–°ã—ã„Mapã‚’ä»£å…¥ã™ã‚‹ã“ã¨ã¯å‡ºæ¥ãªã„ã€‚ã—ã‹ã—SAMPLE_MAPå†…ã«å€¤ã‚’
sakura-1 2009/10/04
ArrayList

java
ãƒªãƒ³ã‚¯
Javaåˆ—æŒ™åž‹ãƒ¡ãƒ¢(Hishidama's Java enum Memo)
åˆ—æŒ™åž‹ï¼ˆenumï¼‰ã¯ã€JDK1.5ã§å°Žå…¥ã•ã‚ŒãŸã€ä¸€é€£ã®å€¤ã‚’å®šç¾©ã™ã‚‹æ–‡æ³•ã€‚[2006-07-26] ä¸€ç•ªå˜ç´”ãªå®šç¾©æ–¹æ³•ã¯Cè¨€èªžã®åˆ—æŒ™åž‹ã«ä¼¼ã¦ã„ã‚‹ãŒã€Cè¨€èªžã¨é•ã£ã¦å®Ÿæ…‹ã¯ã‚¯ãƒ©ã‚¹ï¼ˆã¨ã€ä¸å¤‰ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆï¼‰ã€‚ enumã¯enumerateï¼ˆã‚¤ãƒ‹ãƒ¥ãƒ¼ãƒ ãƒ¬ã‚¤ãƒˆã‚ã‚‹ã„ã¯ã‚¤ãƒŒãƒ¼ãƒ ãƒ¬ã‚¤ãƒˆï¼‰ã®ç•¥ãªã®ã§ã€ç™ºéŸ³ã¨ã—ã¦ã¯ã€Œã‚¤ãƒ‹ãƒ¥ãƒ¼ãƒ ã€ãŒæ£ã—ãã†ã ãŒã€è‡ªåˆ†ã¯ã€Œã‚¤ãƒŠãƒ ã€ã€Œã‚¨ãƒŠãƒ ã€ã¨å‘¼ã‚“ã§ã„ã‚‹ã€‚ æœ€ã‚‚å˜ç´”ãªå®šç¾©æ–¹æ³• enum åˆ—æŒ™å { åˆ—æŒ™å, åˆ—æŒ™å, â€¦ } åˆ—æŒ™åã¯ã€ã‚¯ãƒ©ã‚¹åï¼ˆã‚„ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ•ã‚§ãƒ¼ã‚¹åãªã©ï¼‰ã¨åŒæ§˜ã€‚ ï¼ˆã—ãŸãŒã£ã¦ã€publicã®ä»˜ã„ãŸenumã®åˆ—æŒ™åã¯ã€ã‚½ãƒ¼ã‚¹ãƒ•ã‚¡ã‚¤ãƒ«åã¨åŒã˜ã§ãªã‘ã‚Œã°ãªã‚‰ãªã„ã€‚ã¾ãŸã€publicã®ä»˜ã„ãŸenumã¯ã‚½ãƒ¼ã‚¹ãƒ•ã‚¡ã‚¤ãƒ«å†…ã«1ã¤ã—ã‹å®šç¾©ã§ããªã„ï¼‰ åˆ—æŒ™åï¼ˆenumå®šæ•°ï¼‰ã¯ã€ãƒ•ã‚£ãƒ¼ãƒ«ãƒ‰åã®å®šæ•°ï¼ˆã‚¯ãƒ©ã‚¹å†…ã®static finalå¤‰æ•°ï¼‰ã¨åŒæ§˜ã€‚ ï¼ˆã—ãŸãŒã£ã¦ã€ã‚¢ãƒ«ãƒ•ã‚¡ãƒ™ãƒƒãƒˆå¤§æ–‡å—ã‚’ä½¿
sakura-1 2009/10/04
é…åˆ—

java
ãƒªãƒ³ã‚¯
javaã®ä¿®é£¾åfinal - rderaãƒã‚°
javaã®ä¿®é£¾åfinalã¯ï¼“ã¤ã®ã“ã¨ãŒã§ãã¾ã™ã€‚ å¤‰æ•°ã®å€¤ã‚’å¤‰æ›´ã§ããªã„ã‚ˆã†ã«ã™ã‚‹ã€‚ ã‚µãƒ–ã‚¯ãƒ©ã‚¹ã«ã‚ˆã‚‹ãƒ¡ã‚½ãƒƒãƒ‰ã®ã‚ªãƒ¼ãƒãƒ¼ãƒ©ã‚¤ãƒ‰ã‚’é˜²æ¢ã™ã‚‹ ã‚¯ãƒ©ã‚¹ã‚’ç¶™æ‰¿ã§ããªãã™ã‚‹ ä¸€ã¤ä¸€ã¤èª¬æ˜Žã—ã¦ã„ã“ã†ã¨æ€ã„ã¾ã™ã€‚ å¤‰æ•°ã®å€¤ã‚’å¤‰æ›´ã§ããªã„ã‚ˆã†ã«ã™ã‚‹ finalã¨ã„ã†ä¿®é£¾åã‚’ä»˜ã‘ã¦å®£è¨€ã—ãŸå¤‰æ•°ã¯å¤‰æ›´ã§ãã¾ã›ã‚“ã€‚ä¸€åº¦ã ã‘å€¤ã‚’ä»£å…¥ã§ãã¾ã™ã€‚ ä¾‹ãˆã° final int x = 1; x = 2 //ã‚¨ãƒ©ãƒ¼ ã¯æ€’ã‚‰ã‚Œã¾ã™ã€‚ final å¤‰æ•° x ã«å€¤ã‚’ä»£å…¥ã™ã‚‹ã“ã¨ã¯ã§ãã¾ã›ã‚“ã€‚ x = 2;ãƒ—ãƒã‚°ãƒ©ãƒ ä¸ã§ä½¿ã†å®šæ•°ã¨ã‹ã€é–“é•ã£ã¦å€¤ã‚’å¤‰æ›´ã—ãŸã‚‰å›°ã‚‹å¤‰æ•°ã«ã¯finalã‚’ä»˜ã‘ã¦å®£è¨€ã™ã‚Œã°è‰¯ã„ã§ã™ãã€‚ é…åˆ—ã«finalã‚’ä»˜ã‘ã¦å®£è¨€ã™ã‚‹å ´åˆã€ã¡ã‚‡ã£ã¨äº‹æƒ…ãŒé•ã„ã¾ã™ã€‚ 1 class test{ 2 public static void main(String[] args){ 3 final int[] x = {0,1,
sakura-1 2009/10/04
java
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