[B! java] TakiTakeã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

TakiTake id:TakiTake

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JVMã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚’é‹ç”¨ã™ã‚‹éš›ã®ãƒ¡ã‚¸ãƒ£ãƒ¼ã©ã“ã‚ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ãƒã‚¤ãƒ³ãƒˆãƒ¡ãƒ¢ - yoskhdiaâ€™s diary
JVMã«ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°é …ç›®ã¯å¤šã€…ã‚ã‚Œã©ã€ãƒ—ãƒãƒ€ã‚¯ã‚·ãƒ§ãƒ³ã§é‹ç”¨ã™ã‚‹éš›ã«äºˆã‚ãŠã•ãˆã¦ãŠããŸã„é …ç›®ã‚’ã¾ã¨ã‚ã¦ã¿ã‚‹ã‚¨ãƒ³ãƒˆãƒªã§ã™ã€‚*1 å‹¿è«–ã€OSã‚‚JVMã‚‚ãƒ‡ãƒ•ã‚©ãƒ«ãƒˆã§ã‚ã‚‹ç¨‹åº¦ã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã¯ç™ºæ®ã§ãã€è¨ˆæ¸¬ã‚’ä¼´ã‚ãªã„ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã¯æ‚ªæ‰‹ã§ã‚ã‚‹ã“ã¨ã¯ã‚ˆãçŸ¥ã‚‰ã‚Œã¦ã„ã¾ã™ã€‚ ã—ã‹ã—ã€è¨å®šã—ã¦ãŠã‹ãªã„ã¨ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã«ãã®ã¾ã¾å½±éŸ¿ã™ã‚‹ã¨åˆ†ã‹ã‚‹ã‚‚ã®ã‚’èª¿ã¹ãªã„ã®ã¯è£¸ã§æˆ¦å ´ã«èµ´ãã‚ˆã†ãªã‚‚ã®ã§ã™ã€‚*2 ã©ã‚“ãªé …ç›®ã‚’ã©ã†å¤‰æ›´ã™ã‚Œã°è‰¯ã„ã®ã‹çŸ¥ã£ã¦ã„ã‚‹ã“ã¨ã¯é‡è¦ãªæ¦å™¨ãªã®ã§ã™ã€‚ ãªãœèª¿ã¹ã‚‹ã®ã‹ ä»Šå›žã€ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ãƒã‚¤ãƒ³ãƒˆã‚’èª¿ã¹ã‚‹ã«ã‚ãŸã£ã¦ã€ç§ã®ãƒ¢ãƒãƒ™ãƒ¼ã‚·ãƒ§ãƒ³ã¯ã©ã“ã«ã‚ã‚‹ã®ã‹ã‚’è€ƒãˆã‚‹ã¨ã€ä»¥ä¸‹ã®è¦ä»¶ã‚’æº€ãŸã—ãŸã„ã¨ã„ã†ã“ã¨ãŒã‚ã’ã‚‰ã‚Œã¾ã™ã€‚ ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã¨ã—ã¦æ±‚ã‚ã‚‰ã‚Œã‚‹å“è³ªæ°´æº–ã¨ã—ã¦å‹•ä½œã™ã‚‹ â†’ æ€§èƒ½ç›®æ¨™ ç•°å¸¸æ™‚ã«äº‹è±¡ã‚’è¿½ã†ã“ã¨ãŒã§ãã‚‹ ã“ã“ã§ã„ã†å“è³ªæ°´æº–ãƒ»ç•°å¸¸ã¨ã¯ã€ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ãŒæ˜Žã‚‰ã‹ã«ä½Žã„ã€ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ãŒã‚¯ãƒ©ãƒƒã‚·ãƒ¥ã™
TakiTake 2017/11/07
java
ãƒªãƒ³ã‚¯
Javaã®è¬Žã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹åŠ£åŒ–ç¾è±¡ã¨ã®æˆ¦ã„ - Cybozu Inside Out | ã‚µã‚¤ãƒœã‚¦ã‚ºã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã®ãƒ–ãƒã‚°
ã“ã‚“ã«ã¡ã¯ã€‚ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³åŸºç›¤ãƒãƒ¼ãƒ ã®æ¨ªç”°ã§ã™ã€‚ Javaã®è¬Žã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹åŠ£åŒ–ã«ã¾ã¤ã‚ã‚‹èª¿æŸ»ã‚’ã—ã¦ã„ãŸã®ã§ã™ãŒã€1ãƒ¶æœˆã®è‹¦åŠ´ã®æœ«ã«åŽŸå› ãŒã‚ã‹ã‚Šã¾ã—ãŸã®ã§ã€å ±å‘Šã•ã›ã¦ã„ãŸã ãã¾ã™ï¼ å…¬é–‹å¾Œã«é ‚ã„ãŸã¯ã¦ãªãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ã§ã®ã”æŒ‡æ‘˜ãƒ»ç¤¾å†…ã§ã®ã‚¿ã‚¤ãƒãƒ»èªã¿ã«ãã„ãªã©ã®æŒ‡æ‘˜ã‚’å—ã‘ã¦ãŸã®ã§ã€è¬¹ã‚“ã§ä¿®æ£ã•ã›ã„ãŸã ãã¾ã™ã€‚ ä¿®æ£ã—ãŸå†…å®¹ã«ã¤ãã¾ã—ã¦ã¯ã€è¨˜äº‹ã®æœ€å¾Œã‚’å‚ç…§ã—ã¦ãã ã•ã„ã€‚ å¿™ã—ã„äººã®ãŸã‚ã®ã¾ã¨ã‚ jdk-7u4ä»¥é™ã®jdk-7 *1 ã§Javaã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ãŒåŠ£åŒ–ã™ã‚‹è¬Žã®ç¾è±¡ CodeCacheã®å®¹é‡é™ç•Œã«è¿‘ã¥ãã¨JITã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã‚’åœæ¢ã—ã¦ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã—ãŸã‚³ãƒ¼ãƒ‰ã‚’æ¨ã¦ã‚‹æ©Ÿèƒ½ãŒåŽŸå› ã ã£ãŸ èµ·å‹•ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã§å›žé¿ã§ãã‚‹ã®ã§ã€é•·æœŸé‹ç”¨ã™ã‚‹ã¨ãã¯ -XX:-UseCodeCacheFlushing, -XX:ReservedCodeCacheSize=128m ã‚’ã¤ã‘ã‚‹ ä¸Šã®ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã‚’è¨å®šã—ãŸæ™‚ã«ã€C
TakiTake 2016/04/13
java

performance
ãƒªãƒ³ã‚¯
ææ€–ã® JVM å¤§é‡ãƒ¡ãƒ¢ãƒªæ¶ˆè²»ï¼ãƒ¡ãƒ¢ãƒªãƒªãƒ¼ã‚¯ã®è¬Žã‚’è¿½ãˆï¼ï¼ - Cybozu Inside Out | ã‚µã‚¤ãƒœã‚¦ã‚ºã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã®ãƒ–ãƒã‚°
ã“ã‚“ã«ã¡ã¯ã€ãƒŸãƒ‰ãƒ«ã‚¦ã‚§ã‚¢é–‹ç™ºãƒãƒ¼ãƒ ã®é’æœ¨(@a_o_k_i_n_g)ã§ã™ã€‚å°†æ¥ã®å¤¢ã¯å·å£æµ©æŽ¢æ¤œéšŠã«å…¥ã‚‹ã“ã¨ã§ã™ã€‚ å…ˆæ—¥ã€å¼Šç¤¾ã®ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚µãƒ¼ãƒãƒ¼ã§å¤§é‡ã«ãƒ¡ãƒ¢ãƒªã‚’æ¶ˆè²»ã™ã‚‹ã¨ã„ã†ç¾è±¡ã«éé‡ã—ã¾ã—ãŸã€‚ã‚¢ã‚¯ã‚»ã‚¹é »åº¦ã®ä½Žã„ã‚µãƒ¼ãƒãƒ¼ãŒãƒ¡ãƒ¢ãƒªã‚’å¤§é‡æ¶ˆè²»ã™ã‚‹ã¨ã„ã†è¬Žæ·±ã„ã‚‚ã®ã§ã—ãŸã€‚ ç™ºç”Ÿå½“åˆã®çŠ¶æ³ã¯ã“ã‚“ãªæ„Ÿã˜ã§ã™ã€‚ ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚µãƒ¼ãƒãƒ¼ã§ã¯ Jetty ãŒç¨¼åƒ ç¾è±¡ãŒç™ºç”Ÿã—ãŸ JVM ã¯ 5GB ç¨‹åº¦ã®ãƒ¡ãƒ¢ãƒªã‚’æ¶ˆè²»ã—ã¦ãŠã‚Šã€æ˜Žã‚‰ã‹ã«é€šå¸¸ã§ã¯ãªã„é‡ã®ãƒ¡ãƒ¢ãƒªã‚’æ¶ˆè²»ã—ã¦ã„ã‚‹ è¤‡æ•°å°ã®ã‚µãƒ¼ãƒãƒ¼ã§ç™ºç”Ÿã—ã¦ã„ãŸãŒã€å…¨ã¦ã§ç™ºç”Ÿã—ãŸã‚ã‘ã§ã¯ãªã„ã€‚ ã¾ãŸã€ç™ºç”Ÿã—ãŸã‚µãƒ¼ãƒãƒ¼ã¯ã„ãšã‚Œã‚‚ã‚¢ã‚¯ã‚»ã‚¹é »åº¦ãŒå°‘ãªã„ã‚µãƒ¼ãƒãƒ¼ã ã£ãŸã€‚ ãƒ’ãƒ¼ãƒ—ã€ãƒ‘ãƒ¼ãƒžãƒãƒ³ãƒˆã€ã‚¹ã‚¿ãƒƒã‚¯ ã²ã¨ã¾ãšã€JVM ã§ãƒˆãƒ©ãƒ–ãƒ«ãŒç™ºç”Ÿã—ãŸæ™‚ã¯ä½•ã¯ã¨ã‚‚ã‚ã‚Œãƒ’ãƒ¼ãƒ—ãƒ€ãƒ³ãƒ—ã¨ã‚¹ãƒ¬ãƒƒãƒ‰ãƒ€ãƒ³ãƒ—ã‚’è¦‹ã‚‹ã«é™ã‚Šã¾ã™ã€‚å„ç¨®æƒ…å ±ã®å–å¾—ã‚’ã‚¤ãƒ³ãƒ•ãƒ©éƒ¨éšŠã¸ä¾é ¼ã—ã€å¾—ã‚‰ã‚ŒãŸãƒ’ãƒ¼ãƒ—ã‚’è§£æžã™ã‚‹ã¨ã€
TakiTake 2015/02/04
java
ãƒªãƒ³ã‚¯
http://blog.ik.am/entries/138
TakiTake 2012/06/19
java

codereview
ãƒªãƒ³ã‚¯
Tomcatã¨Oracleé–“ã®ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ãƒ—ãƒ¼ãƒªãƒ³ã‚°ã«é–¢ã™ã‚‹ãƒˆãƒ©ãƒ–ãƒ«ã‚·ãƒ¥ãƒ¼ãƒ†ã‚£ãƒ³ã‚° - æ—¥è¨˜ã®ã‚ˆã†ãªä½•ã‹
Tomcatã§ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ãƒ—ãƒ¼ãƒªãƒ³ã‚°ã‚’ä½¿ç”¨ã—ã¦ã„ã¦ã€Tomcat <-> Oracleé–“ã®æŽ¥ç¶šãŒFINã‚„RSTãƒ‘ã‚±ãƒƒãƒˆã«ã‚ˆã‚‹é€šçŸ¥ãªã—ã«åˆ‡ã‚‰ã‚ŒãŸå ´åˆã€ãƒ—ãƒ¼ãƒ«ã—ã¦ã„ã‚‹æŽ¥ç¶šãŒå®Ÿéš›ã«ã¯æ»ã‚“ã§ã„ã‚‹çŠ¶æ…‹ãŒç™ºç”Ÿã™ã‚‹ã€‚ä¾‹ãˆã°ã€ä»¥ä¸‹ã®ã‚ˆã†ãªå ´åˆã«ç™ºç”Ÿã™ã‚‹ã€‚ APã‚µãƒ¼ãƒãƒ¼ <-> DBã‚µãƒ¼ãƒãƒ¼é–“ã®Firewallã«ã‚ˆã‚‹ã‚»ãƒƒã‚·ãƒ§ãƒ³åˆ‡æ– DBã‚µãƒ¼ãƒãƒ¼ã®ãƒªãƒ–ãƒ¼ãƒˆ(Windows Server 2008ã®å ´åˆã€‚ä»–ã¯æœªç¢ºèª) ãªãŠã€Windows Server 2008ã§è©¦ã—ãŸé™ã‚Šã§ã¯Oracleã‚µãƒ¼ãƒ“ã‚¹ã®å†èµ·å‹•ã‚„shutdownã€startupã®å ´åˆã¯ç™ºç”Ÿã—ãªã‹ã£ãŸã€‚ãŠãã‚‰ãFINã¾ãŸã¯RSTãƒ‘ã‚±ãƒƒãƒˆãŒé£›ã‚“ã§ã„ã‚‹ã¨æ€ã‚ã‚Œã‚‹ã€‚ ä¸€åº¦ã€ã“ã®çŠ¶æ…‹ã«é™¥ã‚‹ã¨ã€ãã®å¾Œãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚„DBã‚µãƒ¼ãƒãƒ¼ãŒå¾©æ—§ã—ã¦ã‚‚æ»ã‚“ã æŽ¥ç¶šãŒãƒ—ãƒ¼ãƒ«ã«æ®‹ã‚Šç¶šã‘ã€ãã®æŽ¥ç¶šã‚’ä½¿ç”¨ã—ãŸTomcatã®ã‚¹ãƒ¬ãƒƒãƒ‰ã¯SQLã‚’å®Ÿè¡Œã™ã‚‹å‡¦ç†ã§Oracleã‹ã‚‰ã®å¿œç”ã‚’ãšã£ã¨å¾…
TakiTake 2012/03/29
å¦‚ä½•ã«æ»ã‚“ã§ã„ã‚‹ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ã®ã¿ã‚’dropã™ã‚‹ã‹

java

Tomcat

Oracle
ãƒªãƒ³ã‚¯
Javaãƒ¡ãƒ¢ãƒªã€GCãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã¨ãã‚Œã«ã¾ã¤ã‚ã‚‹ãƒˆãƒ©ãƒ–ãƒ«å¯¾å¿œæ‰‹é †ã¾ã¨ã‚ - æ—¥è¨˜ã®ã‚ˆã†ãªä½•ã‹
GCå‘¨ã‚Šã§ãƒˆãƒ©ãƒ–ãƒ«ã‚·ãƒ¥ãƒ¼ãƒ†ã‚£ãƒ³ã‚°ã—ãŸéš›ã®çµŒé¨“ã‚„ã€Webç‰ã§èª¿ã¹ãŸã“ã¨ã‚’ã¾ã¨ã‚ã¦ã¿ã‚‹ã€‚ å‰æ ãƒ»JVMã¯ã€Sun Javaã‚’æƒ³å®šã€‚(ä»–ã¯ä½¿ã£ãŸã“ã¨ãªã„ã§ã™ã€‚ã€‚ã€‚) ãƒ»Sun Java 1.5-1.6ã‚’æƒ³å®šã€‚ ç›®æ¨™ ãƒžã‚¤ãƒŠãƒ¼GCã€Full GCãã‚Œãžã‚ŒãŒé »ç™ºã™ã‚‹ã“ã¨ãªãã€ã‹ã¤ãã‚Œãžã‚Œã®å®Ÿè¡Œæ™‚é–“ã‚’1ç§’æœªæº€ã«æŠ‘ãˆã‚‹ã“ã¨ã€‚ ãƒžã‚¤ãƒŠãƒ¼GCã¯1ç§’æœªæº€ã©ã“ã‚ã§ã¯ãªãã€ã‚‚ã£ã¨çŸããªã‚‹ã¹ãã€‚ã©ã‚Œãã‚‰ã„ãŒç†æƒ³ã‹ã¯ï¼Ÿ(0.1ç§’æœªæº€ãã‚‰ã„ã‚’ç›®æŒ‡ã—ãŸã„ï¼Ÿ) é€£ç¶šã—ãŸè² è·çŠ¶æ…‹(æƒ³å®šã•ã‚Œã‚‹ãƒ”ãƒ¼ã‚¯ã‚¢ã‚¯ã‚»ã‚¹)ã§ã‚‚OutOfMemoryErrorãŒç™ºç”Ÿã—ãªã„ã“ã¨ã€‚ ç†æƒ³çš„ãªçŠ¶æ…‹ã¯ã€ä¸Šè¨˜ã«åŠ ãˆã¦ã€Full GCã®ç™ºç”ŸãŒä½Žé »åº¦ã§ã‚ã‚‹ã“ã¨ã€‚ å…·ä½“çš„ã«ã¯ã€ã§ãã‚‹ã ã‘ãƒžã‚¤ãƒŠãƒ¼GCã§çŸå‘½ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆ(1å›žä½¿ã£ãŸã‚‰ã‚‚ã†ä½¿ã‚ãªã„ã‚ˆã†ãªã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã€‚é€†ã«ã‚»ãƒƒã‚·ãƒ§ãƒ³ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆç‰ã¯é•·å‘½ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã¨ãªã‚‹)ã‚’ç ´æ£„ã•ã›ã¦ã€çŸå‘½ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆãŒã€Tenu
TakiTake 2012/03/29
java
ãƒªãƒ³ã‚¯
Javaã«ãŠã‘ã‚‹ãƒ•ã‚¡ã‚¤ãƒ«ãƒãƒƒã‚¯ã«ã¤ã„ã¦ - World Wide Wonderful
ã„ã‚ã‚†ã‚‹ãƒ•ã‚¡ã‚¤ãƒ«ãƒãƒƒã‚¯ File lockFile = new File("pid.lock"); lockFile.deleteOnExit(); while (lockFile.createNewFile()) { try { // ãƒãƒƒã‚¯ã‚’å–å¾—ã—ã¦ã„ã‚‹å ´åˆã®å‡¦ç† ... } finally { lockFile.delete(); } } else { throw new RuntimeException("ãƒãƒƒã‚¯ã‚’å–å¾—ã§ãã¾ã›ã‚“ã§ã—ãŸ."); } ä¸Šè¨˜ã¯ã„ã‚ã‚†ã‚‹ãƒ•ã‚¡ã‚¤ãƒ«ãƒãƒƒã‚¯ã¨è¨€ã‚ã‚Œã‚‹ã‚‚ã®ã§ã™ã€‚ ãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ç’°å¢ƒã®éš›ã«åŒã˜å‡¦ç†ãŒä¸¦åˆ—ã«å®Ÿè¡Œã•ã‚Œã‚‹ã¨ãƒžã‚ºã„å ´åˆã€ãƒ•ã‚¡ã‚¤ãƒ«ãƒãƒƒã‚¯ã«ã‚ˆã‚ŠåŒã˜å‡¦ç†ãŒä¸¦åˆ—ã«å®Ÿè¡Œã•ã‚Œå†…å®¹ã«åˆ¶å¾¡ã—ã¾ã™ã€‚ File#createNewFile() ã¯ã€ãƒ•ã‚¡ã‚¤ãƒ«ãŒå˜åœ¨ã—ãªã‘ã‚Œã°æ–°è¦ã«ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ä½œæˆã—Trueã‚’è¿”ã—ã€æ—¢ã«ãƒ•ã‚¡ã‚¤ãƒ«ãŒå˜åœ¨ã™ã‚Œã°Falseã‚’è¿”ã—ã¾ã™ã€‚ ãŸã ã—
TakiTake 2011/12/16
java
ãƒªãƒ³ã‚¯
ä¸€æ©å…ˆè¡ŒãJavaãƒ—ãƒã‚°ãƒ©ãƒžãŒèªã‚€ã¹ãã‚ªãƒ¼ãƒ—ãƒ³ã‚½ãƒ¼ã‚¹ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢10é¸ - è¨è¨ˆã¨å®Ÿè£…ã®ç‹é–“ã§ã€‚
10ä¸‡è¡Œã‚³ãƒ¼ãƒ‰èªã‚“ã ã‚‰Javaåˆ†ã‹ã‚‹ã‚ˆã£ã¦Twitterã«æ›¸ã„ãŸã‚‰ã™ã’ã‡å‹¢ã„ã§RTã•ã‚ŒãŸã®ã§ã€èª¿åã«ä¹—ã£ã¦æ•æ‰ã‚¨ãƒ³ãƒˆãƒªæ›¸ãã‚ˆã€‚ Java Core API JDKã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã—ãŸãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã«å…¥ã£ã¦ã‚‹src.zipã‚’å±•é–‹ã™ã‚‹ã¨å…¥ã£ã¦ã‚‹ã‹ã‚‰èªã‚€ã¨è‰¯ã„ã‚ˆã€‚ ã™ãè¿‘ãã«ã‚ã‚‹ã®ã‹ã‚‰èªã‚€ã£ã¦ã®ã¯ãƒ¡ãƒ³ã‚¿ãƒ«çš„ã«æ¥½ã§ã„ã„ã€‚ åŽ³å¯†ã«ã¯OSSã˜ã‚ƒãªãã¦å˜ã«å…¬é–‹ã•ã‚Œã¦ã‚‹ã£ã¦ã ã‘ãªã‚“ã ã‘ã©ã‚‚ã€Javaãƒ—ãƒã‚°ãƒ©ãƒžãªã®ã«ã‚³ã‚¢APIã®ã‚³ãƒ¼ãƒ‰èªã‚“ã§ãªã„ã¨ã‹ç„¡ã„ã‚ˆãï¼Ÿ ã©ã‚Œã‹ã‚‰èªã‚ã°è‰¯ã„ã‹åˆ†ã‹ã‚‰ã‚“ã‹ã£ãŸã‚‰ã€ java.lang java.util java.io java.text è¾ºã‚Šã‚’ã¾ãšã¯ã‚ãƒãƒ³ã¨ç†è§£ã™ã‚‹ã“ã¨ã€‚å½“ç„¶ã‚³ãƒ¼ãƒ‰ã‚’èªã¿çµ‚ã‚ã£ãŸã‚‰ã€ãã‚Œã‚’ä½¿ã£ã¦ã‚³ãƒ¼ãƒ‰ã‚’æ›¸ãäº‹ã€‚ OpenJDK http://hg.openjdk.java.net/jdk7/jdk7 OpenJDKã‚’èªã‚€ã“ã¨ã§ã€ãƒ—ãƒã‚°ãƒ©ãƒ è¨€èªžã—ã¦ã®Javaã§ã¯ãª
TakiTake 2011/06/11
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java
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TakiTake 2009/11/29
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TakiTake 2009/06/16
eclipse

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