[B! java] ryoasaiã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

ryoasai id:ryoasai

javaã«é–¢ã™ã‚‹ryoasaiã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (273)

${{author_name}}$

{{{comment_expanded}}}

{{label}}

{{#is_bookmark}}ãƒªã‚¹ãƒˆ{{/is_bookmark}}{{^is_bookmark}}ãƒªãƒ³ã‚¯{{/is_bookmark}}

${{author_name}}$
{{author_name}}{{created}}
{{ #comment }}{{ comment }}{{ /comment }}
- {{ label }}

${{author_name}}$

{{{comment_expanded}}}

{{label}}

{{#is_bookmark}}ãƒªã‚¹ãƒˆ{{/is_bookmark}}{{^is_bookmark}}ãƒªãƒ³ã‚¯{{/is_bookmark}}

How JDK 8 standardizes and augments to Guava library functionalities | Java.net
Source Code The following code snippets are part of a complete sample available at https://github.com/bhakti-mehta/samples/tree/master/jdk8-and-guava For the sake of simplicty, I have a simple sample which has a collection of people's data. We start with a simple POJO Person as shown below for both the JDK 8 and Guava cases public class Person { Â Â Â private String firstName; Â Â Â private String
ryoasai 2015/09/18
java
ãƒªãƒ³ã‚¯
Safe Publication and Safe Initialization in Java
Most formalisms in Java Memory Model are usa ble only as the deep reference to explain what constitutes the legal outcomes in Java programs. If you donâ€™t believe me, go and read "Java Memory Model Pragmatics" transcript again. Most people are trying to digest the JMM rules as stated, and figure out the high-level constructions that are usa ble without causing developers' heads to explode. Two of the
ryoasai 2015/03/13
java

thread
ãƒªãƒ³ã‚¯
Where is JAVA_HOME on macOS Mojave (10.14) to Lion (10.7)?
Just browsing Stack Overflow? Help us improve your experience. Sign up for research
ryoasai 2014/10/24
java

mac
ãƒªãƒ³ã‚¯
Google Code Archive - Long-term storage for Google Code Project Hosting.
ryoasai 2014/07/24
â€œA workaround is to use the "-javaagent:<proper path>/jmockit.jar" JVM parameter to initialize JMockit. This way, it never attempts to use the Attach API.â€

java

tool
ãƒªãƒ³ã‚¯
How to convert Map<String, String> to Map<Long, String> ? (option : using guava)
ryoasai 2014/07/24
java

guava
ãƒªãƒ³ã‚¯
javac ã‚³ãƒžãƒ³ãƒ‰ã®-source, -target ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã®ãƒ«ãƒ¼ãƒ«å¤‰æ›´ã«ã¤ã„ã¦
javac ã‚³ãƒžãƒ³ãƒ‰ã®-source, -targetÂ ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã®ãƒ«ãƒ¼ãƒ«å¤‰æ›´ã«ã¤ã„ã¦ 2014å¹´7æœˆ2æ—¥ at 12:55 åˆå¾Œ 1ä»¶ã®ã‚³ãƒ¡ãƒ³ãƒˆ Java SE 5 ä»¥å‰ã® Java ã®ã‚½ãƒ¼ã‚¹ãƒ»ã‚³ãƒ¼ãƒ‰ã‚’ Java SE 7, Java SE 8 ã®ç’°å¢ƒã§ã”åˆ©ç”¨é ‚ã„ã¦ã„ã‚‹çš†æ§˜ã«ã€ä»Šå¾Œã® JDK ã«ãŠã‘ã‚‹ä»•æ§˜å¤‰æ›´(äºˆå®š)ã®ã”æ¡ˆå†…ã‚’ã•ã—ã‚ã’ã¾ã™ã€‚ â€» ã“ã®æƒ…å ±ã¯ 2013 å¹´ 4 æœˆ 14 æ—¥ã«é–‹ç™ºè€… (Joseph D. Darcy) ã‹ã‚‰ã‚¢ãƒŠã‚¦ãƒ³ã‚¹ã•ã‚ŒãŸæƒ…å ±ã§ã™ï¼ˆã”å‚ç…§ï¼šChanging Sources and Moving Targets: Evolving the javac command line ï¼‰ã€‚ã¾ãŸã€JEP(JDK Enhancement Proposal) 182 ã¨ã—ã¦ãƒªã‚¹ãƒˆã•ã‚Œã¦ã„ã‚‹å†…å®¹ã§ã™ã€‚ ä»Šã¾ã§ã€javac ã®ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ãƒ»ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã§ â€œ-sourceâ€, â€œ-
ryoasai 2014/07/02
java

jdk
ãƒªãƒ³ã‚¯
throws ç¯€ã«åž‹å¤‰æ•°ã‚’ä½¿ã£ã¦ä»»æ„ã®ä¾‹å¤–ã‚’æŠ•ã’ã‚‹ forEach ãƒ¡ã‚½ãƒƒãƒ‰ãŒæ›¸ã‘ã‚‹ - æ˜ ç”»ã¯ä¸åŠ‡
id:miyakawa_taku:20140609:1402320680 ã®ç¶šãã§ã™ã€‚ Java SE 8 ã§ã¯ Iterable ã‚¤ãƒ³ã‚¿ãƒ•ã‚§ãƒ¼ã‚¹ã« forEach ãƒ¡ã‚½ãƒƒãƒ‰ãŒç”¨æ„ã•ã‚Œã¾ã—ãŸã€‚ã„ã‚ã‚†ã‚‹å†…éƒ¨ã‚¤ãƒ†ãƒ¬ãƒ¼ã‚¿ã§ã€é€šå¸¸ã¯æ¬¡ã®ã‚ˆã†ã«ãƒ©ãƒ ãƒ€å¼ã‚’ã¨ã‚‚ãªã£ã¦ä½¿ã„ã¾ã™ã€‚ List<String> list = ...; list.forEach(str -> System.out.println(str)); forEach ã«æ¸¡ã™ãƒ©ãƒ ãƒ€å¼ã®æœ¬ä½“ã§ã¯ã€ãƒã‚§ãƒƒã‚¯ä¾‹å¤–ã‚’æŠ•ã’ã‚‹ã“ã¨ãŒã§ãã¾ã›ã‚“ã€‚ forEach ã®å¼•æ•°ã¯ Consumer ã‚¤ãƒ³ã‚¿ãƒ•ã‚§ãƒ¼ã‚¹ã§ã€ãã® Consumer.accept ãƒ¡ã‚½ãƒƒãƒ‰ã«ã¯ throws ç¯€ãŒãªã„ã‹ã‚‰ã§ã™ã€‚ ã—ãŸãŒã£ã¦æ¬¡ã®ã‚³ãƒ¼ãƒ‰ã¯ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã‚¨ãƒ©ãƒ¼ã«ãªã‚Šã¾ã™ã€‚ Writer.write ãƒ¡ã‚½ãƒƒãƒ‰ã¯ãƒã‚§ãƒƒã‚¯ä¾‹å¤–ã§ã‚ã‚‹ IOException ã‚’æŠ•ã’ã‚‹ã‹ã‚‰ã§ã™ã€‚ try (
ryoasai 2014/06/12
èˆˆå‘³æ·±ã„ä¾‹ã ã‘ã©ã€è‡ªåˆ†ãªã‚‰å˜ã«Throwableã‚’æŠ•ã’ã‚‹ã‚ˆã†ã«å®£è¨€ã™ã‚‹ã‹ã€AOPã§å®Ÿè¡Œæ™‚ä¾‹å¤–ã«å¤‰æ›ã™ã‚‹ã¨ã„ã†ç™ºæƒ³ã«ãªã‚‹ã‹ã‚‚ã€‚Î»ã¨åž‹æŽ¨è«–å¼·åŒ–ã«ã‚ˆã‚ŠJavaã®ãƒã‚§ãƒƒã‚¯ä¾‹å¤–ãŒè¦‹ç›´ã•ã‚Œã‚‹å¯èƒ½æ€§ãŒã‚ã‚‹ã‹ï¼Ÿ

Java

ãƒ©ãƒ ãƒ€å¼
ãƒªãƒ³ã‚¯
Java ã® throws ç¯€ã§ã¯åž‹å¤‰æ•°ãŒä½¿ãˆã‚‹ - æ˜ ç”»ã¯ä¸åŠ‡
ã¤ã„å…ˆã ã£ã¦çŸ¥ã£ãŸã®ã§ã™ãŒã€ Java ã®ãƒ¡ã‚½ãƒƒãƒ‰ã® throws ç¯€ã§ã¯åž‹å¤‰æ•°ãŒä½¿ãˆã¾ã™ã€‚ 8.4.6 Method throws / Java Language Specification ã“ã‚Œã«ã‚ˆã£ã¦ã€æŠ•ã’ã‚‹å¯èƒ½æ€§ã®ã‚ã‚‹ä¾‹å¤–ã®åž‹ãŒä½¿ã„æ‰‹å´ã§å¤‰ãˆã‚‰ã‚Œã‚‹ã‚ˆã†ãªãƒ¡ã‚½ãƒƒãƒ‰ã‚’æ›¸ãã“ã¨ãŒã§ãã¾ã™ã€‚ãŸã¨ãˆã°æ¬¡ã®ãƒ—ãƒã‚°ãƒ©ãƒ ã®ã‚ˆã†ã«ã€ä¾‹å¤–ã®åž‹ã¨ä¾‹å¤–ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã®ç”Ÿæˆã‚’ä½¿ã„æ‰‹ã«ã¾ã‹ã›ã‚‹æ±Žç”¨ã®è¡¨æ˜Žãƒ¡ã‚½ãƒƒãƒ‰ãŒæ›¸ã‘ã¾ã™ã€‚ *1 class Checker { static <T extends Throwable> void check(boolean condition, Supplier<T> supplier) throws T { if (! condition) { throw supplier.get(); } } } class SomeException extends Exception {
ryoasai 2014/06/12
java

è¨è¨ˆ
ãƒªãƒ³ã‚¯
å•ã„ï¼šJava 8ã®Stream APIã¯æ¥å‹™ã§ã©ã‚“ãªæ™‚ã«ä½¿ã†ã®ï¼Ÿã€€ç”ãˆï¼šã‚ãªãŸãŒforæ–‡ä½¿ã„ãŸã„æ™‚ - ãƒ–ãƒã‚°ãªã‚“ã ã‚ˆã‚‚ã‚“
â€» ã‚µãƒ³ãƒ—ãƒ«ãŒJDK7ã¾ã§ã¨JDK8ã¾ã§ã§æ„å‘³ãŒå¤‰ã‚ã£ã¦ã„ã¦ã‚ã‹ã‚Šã«ãã„ã¨ã„ã†æŒ‡æ‘˜ãŒã‚ã£ãŸã®ã§ã€å°‘ã—ç›´ã—ã¾ã—ãŸã€‚ â€» boxedã‚’ä½¿ã†æ›¸ãæ–¹ã ã¨ç„¡é§„ãªAutoboxingãŒèµ°ã‚‹ã¨ã®æŒ‡æ‘˜ã‚’é ‚ãã¾ã—ãŸã®ã§mapToObjã‚’åˆ©ç”¨ã™ã‚‹ã‚ˆã†ã«å¤‰ãˆã¾ã—ãŸã€‚ Java8ã®ç›®çŽ‰æ©Ÿèƒ½ã®ä¸€ã¤ã«Stream APIãŒã‚ã‚Šã¾ã™ã€‚ ç›®çŽ‰æ©Ÿèƒ½ã ã‘ã‚ã£ã¦ã€å…ˆæ—¥ã®Java Day Tokyo 2014ã‚’å«ã‚ã¦è‰²ã‚“ãªæ‰€ã§ç™ºè¡¨ã‚„ãƒ–ãƒã‚°ã®è¨˜äº‹ãŒå…¬é–‹ã•ã‚Œã¦ã„ã‚‹ã®ã§ã€ã©ã‚“ãªã‚‚ã®ã‹ã‚’çŸ¥ã£ã¦ã‚‹äººã¯å¤šã„ã¨æ€ã„ã¾ã™ã€‚ Stream APIã¨ã„ãˆã°ã€Œ".parallel()"ã¨æ›¸ãã ã‘ã§ä¸¦åˆ—åŒ–ã—ã¦ã‚¹ãƒ”ãƒ¼ãƒ‰ã‚¢ãƒƒãƒ—å‡ºæ¥ã‚‹ï¼ã€ã¨ã„ã†é…æƒ‘çš„ãªã‚ãƒ¼ãƒ¯ãƒ¼ãƒ‰ã§ç´¹ä»‹ã•ã‚Œã‚‹ã“ã¨ãŒå¤šã„ã®ã§ã€ä¸¦åˆ—åŒ–ã®ãŸã‚ã®ä»•æ§˜ã ã¨å‹˜é•ã„ã•ã‚Œãã†ã§ã™ãŒã€ãã†ã§ã¯ã‚ã‚Šã¾ã›ã‚“ã€‚ â€» ã‚‚ã¡ã‚ã‚“ãã†ã„ã£ãŸè¨˜äº‹ã®ä¸ã‚’ã¡ã‚ƒã‚“ã¨èªã‚ã°ãã†å˜ç´”ãªè©±ã˜ã‚ƒãªã„ã“ã¨ã‚‚åˆ†ã‹ã‚Šã¾ã™ã€‚ ã‚€ã—ã‚ã€ä¸¦åˆ—åŒ–ã«é–¢ã—
ryoasai 2014/05/26
æ–°ã—ã„æ–‡æ³•ã‚„APIã‚’çŸ¥ã£ã¦ã„ã‚‹ã ã‘ã§ã¯æœ‰åŠ¹ã«æ´»ç”¨ã§ããªã„ã®ã§ã€ã“ã†ã„ã£ãŸè€ƒå¯Ÿã¯å¤§åˆ‡ã§ã™ãã€‚

java

java8
ãƒªãƒ³ã‚¯
ã¾ãŸrebuild.fmãŒJavaã®æ‚ªå£ã§ç››ã‚Šä¸ŠãŒã£ã¦ãŸã‚ˆ
http://rebuild.fm/44/ Androidã‚¢ãƒ—ãƒªä½œã‚ã†ã¨ã—ã¦Javaãƒ—ãƒã‚°ãƒ©ãƒžå‹Ÿé›†ã—ãŸã‚‰ã‚¯ã‚ºã—ã‹ã“ãªã‹ã£ãŸå…¨éƒ¨ã‚¯ã‚ºã ã£ãŸã¨ã‹ã€ã²ã©ãã‚ã‚Šã¾ã›ã‚“? ã¾ã‚ãã‚Œã¯ç½®ã„ã¨ã„ã¦ã€UIã¿ãŸã„ã«æœ€åˆã‹ã‚‰ä»•æ§˜ã‚’æ±ºã‚ã‚‰ã‚Œãªãã¦ä½•åº¦ã‚‚ä½œã‚Šç›´ã™ã‚ˆã†ãªã‚³ãƒ¼ãƒ‰ã¯Javaã¯ä¸å‘ãã¿ãŸã„ãªè©±ã‚‚ã¾ã£ãŸãåŒæ„ã§ããªã„ã‚ã€‚ Javaã˜ã‚ƒãªãã¦C#ã ã‘ã©ã€æ˜¨æ—¥ã‚³ãƒ¼ãƒ‰ã‚’æ›¸ã„ã¦ã„ã¦ string url = "http://wwwâ€¦"; ã®ã‚ˆã†ã«ã€URLã‚’æ–‡å—åˆ—ã§æŒã£ã¦ã„ãŸã‘ã©ã€ã‚„ã£ã±ã‚¢ãƒ‰ãƒ¬ã‚¹ç”¨ã®ã‚¯ãƒ©ã‚¹ã§ã‚‚ã£ãŸã»ã†ãŒå®‰å¿ƒã ãªã£ã¦æ€ã£ã¦ URI url = new URI("http://wwwâ€¦"); ã¨æ›¸ãç›´ã—ã¾ã—ãŸã€‚ å½“ç„¶ã€ã“ã®urlã‚’å‚ç…§ã—ã¦ã„ã‚‹ã¨ã“ã‚ã¯å…¨éƒ¨ã‚¨ãƒ©ãƒ¼ã«ãªã‚Šã¾ã™ã€‚ Javaã‚’ã¯ã˜ã‚ã¨ã™ã‚‹é™çš„åž‹ã®è¨€èªžã‚’ã‘ãªã—ã¦ã‚‹äººãŸã¡ã¯ã€ã“ã‚ŒãŒé¢å€’ã ã¨æ€ã†ã‚“ã§ã—ã‚‡ã†ã‹ã€‚ é€†ã«ã‚¨ãƒ©ãƒ¼ã®å‡ºã¦ã„ã‚‹ç®‡æ‰€ã‚’ç‰‡ã£ç«¯ã‹ã‚‰ç›´ã—ã¦ã‚¨
ryoasai 2014/05/23
IDEã®ã‚µãƒãƒ¼ãƒˆã¨ã‹åž‹ãªãã¦ã‚‚è‡ªä¿¡ã‚’æŒã£ã¦ã‚µã‚¯ã‚µã‚¯ã‚³ãƒ¼ãƒ‰ã‚’æ›¸ã‘ã‚‹äººã‚‚ã„ã¾ã™ãã€‚ãã†ã„ã†äººã«ã¯å¤šãã®Javaã®ãƒ—ãƒã‚°ãƒ©ãƒžãƒ¼ã¯ã‚¯ã‚ºã«è¦‹ãˆã‚‹ã®ã‹ã‚‚ã€‚åƒ•ã¯Perlã‚„JSã®ã‚³ãƒ¼ãƒ‰ã¨ã‹å¤§èƒ†ã«ãƒªãƒ•ã‚¡ã‚¯ã‚¿ãƒªãƒ³ã‚°ã™ã‚‹è‡ªä¿¡ã‚„ã‚¹ã‚ãƒ«ãŒãªã„

java

ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªž
ãƒªãƒ³ã‚¯
Javaã—ã‹ã‹ã‘ãªã„ãŠã„ã‚‰ãŒiPhoneã‚¢ãƒ—ãƒªã‚’ãƒªãƒªãƒ¼ã‚¹ã™ã‚‹ã¾ã§ - ã—ã‚“ã•ã‚“ã®å‡ºå¼µæ‰€ ã¯ã¦ãªãƒ–ãƒã‚°ç·¨
ä»Šå›žã®å†…å®¹ã¯å‰å›žã‚ˆã‚Šã ã„ã¶ã¾ã—ã ãžãƒ»ãƒ»ãƒ»ã€‚ æ¥å‹™ç³»Javaå±‹ãŒMixiã‚¢ãƒ—ãƒªã‚’ãƒªãƒªãƒ¼ã‚¹ã™ã‚‹ã¾ã§ Javaã—ã‹ã‹ã‘ãªã„ãŠã„ã‚‰ãŒmixiã‚¢ãƒ—ãƒªç¬¬2å¼¾ã‚’ãƒªãƒªãƒ¼ã‚¹ã™ã‚‹ã¾ã§ mixiã‚¢ãƒ—ãƒªç¬¬3å¼¾ã€Œã‚³ãƒ¬ã‚ªã‚¹ã‚¹ãƒ¡ï¼ã€ãƒªãƒªãƒ¼ã‚¹ã™ã‚‹ã¾ã§ Javaã—ã‹ã‹ã‘ãªã„ãŠã„ã‚‰ãŒmixiã‚¢ãƒ—ãƒªç¬¬4å¼¾ã‚’ãƒªãƒªãƒ¼ã‚¹ã™ã‚‹ã¾ã§ Javaã—ã‹ã‹ã‘ãªã„ãŠã„ã‚‰ãŒAndroidã‚¢ãƒ—ãƒªã‚’ãƒªãƒªãƒ¼ã‚¹ã™ã‚‹ã¾ã§ ã®ç¶šãã«ãªã‚Šã¾ã™ã€‚ æ£ç›´å®Ÿè£…çš„ã«ã¯mixiã‚¢ãƒ—ãƒªç¬¬2å¼¾ã®ã‚¨ãƒ³ãƒˆãƒª(GWT+Flash+JavaSEã¨ã®äº’æ›ãƒ¬ã‚¤ãƒ¤ã§ã‚µã‚¯ã‚µã‚¯é–‹ç™º)ãŒé£›ã³ã¬ã‘ã¦ã„ã‚‹ã¨æ€ã„ã¾ã™ãŒã€ãã‚Œä»¥æ¥ãã‚‰ã„ã®ã‚¤ãƒ³ãƒ‘ã‚¯ãƒˆã¯ã‚ã‚‹ã¨æ€ã„ã¾ã™ã€‚ é•·æ–‡ã§ã™ã€‚ iOSç‰ˆã‚’é–‹ç™ºã™ã‚‹ãž ãƒžãƒ¢ãƒŽãƒã‚¹ã‚¿ãƒ¼2ã®Androidç‰ˆã¯ç„¡äº‹ã ã›ã¾ã—ãŸã€‚èªã‚“ã§ãªã„äººã¯ä¸Šã«ä¸¦ã‚“ã§ã‚‹éŽåŽ»ã®ã‚¨ãƒ³ãƒˆãƒªã‚’èªã‚“ã§ã¿ã¦ãã ã•ã„ã€‚ Androidã¯JavaSEã¨åŒã˜Javaè¨€èªžã¨ã„ã†ã“ã¨ã§ã€JavaSEã¨äº’æ›ã®ãƒ¬ã‚¤ãƒ¤ãƒ¼ã‚’
ryoasai 2014/05/21
é–‹ç™º

java

ãƒ¢ãƒã‚¤ãƒ«
ãƒªãƒ³ã‚¯
#JJUG_CCC Spring 2014ã§ã€Œåˆã‚ã¦ã® Java EE é–‹ç™ºã‹ã‚‰å¦ã‚“ã ã“ã¨ã€ã¨ã„ã†ã‚¿ã‚¤ãƒˆãƒ«ã§ç™ºè¡¨ã•ã›ã¦é ‚ãã¾ã—ãŸï¼ - Challenge Engineer Life !
æ˜¨æ—¥ã€ãƒ™ãƒ«ã‚µãƒ¼ãƒ«è¥¿æ–°å®¿ã§é–‹å‚¬ã•ã‚ŒãŸJJUG CCC Spring 2014ã§Java EEã«é–¢ã™ã‚‹ç™ºè¡¨ã‚’ã•ã›ã¦é ‚ãã¾ã—ãŸm(_ _)m ã‚»ãƒƒã‚·ãƒ§ãƒ³ã«å‚åŠ ã—ã¦é ‚ã„ãŸæ–¹ã€…ã€æœ¬å½“ã«ã‚ã‚ŠãŒã¨ã†ã”ã–ã„ã¾ã—ãŸï¼ï¼ ã¾ãŸã€å…ˆæœˆã€æ—¥æœ¬ã‚ªãƒ©ã‚¯ãƒ«ã•ã‚“ã®Javaã‚»ãƒŸãƒŠãƒ¼ã§è¬›æ¼”ã•ã›ã¦é ‚ã„ãŸã¨ãã®ãƒ¬ãƒãƒ¼ãƒˆã‚‚å…¬é–‹ã•ã‚Œã¾ã—ãŸm(_ _)m ã€Œé¡§å®¢ãƒ‹ãƒ¼ã‚ºã¸ã®æŸ”è»Ÿã‹ã¤é€Ÿã‚„ã‹ãªå¯¾å¿œã€ã€ã€Œé–‹ç™ºç’°å¢ƒã®ã‚«ã‚¤ã‚¼ãƒ³ã€â”€â”€Java EE 6ã®æŽ¡ç”¨ã§æ§‹é€ è¨ˆç”»ç ”ç©¶æ‰€ãŒå¾—ãŸãƒ¡ãƒªãƒƒãƒˆ http://t.co/8acwAhpfwmâ€” builderjp (@builderjp) 2014, 5æœˆ 19 1å¹´åŠå‰ã«ãƒœã‚¹ã‹ã‚‰Javaã§ã®Webé–‹ç™ºã‚’æ±‚ã‚ã‚‰ã‚Œã¦ã€Œä»Šã•ã‚‰ã‚¸ãƒ£ãƒï¼ï¼Ÿã€ã¨åŠåˆ†ã‚„ã•ãã‚Œã¤ã¤ã€å³ã‚‚å·¦ã‚‚ã‚ã‹ã‚‰ãªã„ä¸ã€Java EEã§é–‹ç™ºã‚’ã—ã¦ããŸã®ã§ã™ãŒâ€¦ãã®é ƒã¯ã¾ã•ã‹JJUG CCCã®ã‚ˆã†ãªèˆžå°ã‚„Oracleã•ã‚“ã§ç™ºè¡¨ã™ã‚‹æ©Ÿä¼šã‚’é ‚ã‘ã‚‹ãªã‚“ã¦æ£ç›´æ€
ryoasai 2014/05/20
ä»Šå¾Œã®ã”æ´»èºã‚’æ¥½ã—ã¿ã«ã—ã¦ã„ã¾ã™ã€‚

java

jjug

é–‹ç™º

javaee
ãƒªãƒ³ã‚¯
ã€Œé¡§å®¢ãƒ‹ãƒ¼ã‚ºã¸ã®æŸ”è»Ÿã‹ã¤é€Ÿã‚„ã‹ãªå¯¾å¿œã€ã€ã€Œé–‹ç™ºç’°å¢ƒã®ã‚«ã‚¤ã‚¼ãƒ³ã€â”€â”€Java EE 6ã®æŽ¡ç”¨ã§æ§‹é€ è¨ˆç”»ç ”ç©¶æ‰€ãŒå¾—ãŸãƒ¡ãƒªãƒƒãƒˆ - builder by ZDNet Japan
è‡ªç¤¾è£½å“ã®æ©Ÿèƒ½å¼·åŒ–ã¨å¯¾å¿œãƒ—ãƒ©ãƒƒãƒˆãƒ•ã‚©ãƒ¼ãƒ æ‹¡å¤§ã®ãŸã‚ã€åˆã‚ã¦å–ã‚Šçµ„ã‚“ã Java EEé–‹ç™ºã€‚æ§‹é€ è¨ˆç”»ç ”ç©¶æ‰€ã®èŠç”°æ´‹ä¸€æ°ã‚‰ã¯ã€ãã‚Œã«ã‚ˆã£ã¦ã©ã®ã‚ˆã†ãªãƒ¡ãƒªãƒƒãƒˆã‚’å¾—ãŸã®ã ã‚ã†ã‹ï¼Ÿ æ§‹é€ è¨ˆç”»ç ”ç©¶æ‰€ã®èŠç”°æ´‹ä¸€æ°ãŒã€Java EE 6æŽ¡ç”¨ã®ãƒ¡ãƒªãƒƒãƒˆã‚’èªžã£ãŸ æ—¥æœ¬ã‚ªãƒ©ã‚¯ãƒ«ã¯2014å¹´4æœˆã€ãƒ¦ãƒ¼ã‚¶ãƒ¼ä¼æ¥ã®æƒ…å ±ã‚·ã‚¹ãƒ†ãƒ éƒ¨é–€ç®¡ç†è·ã‚„ã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒˆã‚‰ã‚’å¯¾è±¡ã«ã—ãŸã‚»ãƒŸãƒŠãƒ¼ã€Œæœ€æ–°ã®Javaã‚’3æ™‚é–“ã§çŸ¥ã‚‹Javaè§£èª¬ã‚»ãƒŸãƒŠãƒ¼ã€ã‚’é–‹å‚¬ã—ãŸã€‚æ˜¨å¹´ã‚ˆã‚Šå®šæœŸé–‹å‚¬ã•ã‚Œã¦ã„ã‚‹åŒã‚»ãƒŸãƒŠãƒ¼ã®ç‰¹è‰²ã¯ã€æ—¥æœ¬ã‚ªãƒ©ã‚¯ãƒ«ã®ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã‚„ã‚³ãƒ³ã‚µãƒ«ã‚¿ãƒ³ãƒˆãŒJavaãŠã‚ˆã³Java EEã®æœ€æ–°å‹•å‘ã«ã¤ã„ã¦è§£èª¬ã™ã‚‹ã»ã‹ã€ã‚²ã‚¹ãƒˆãƒ»ã‚¹ãƒ”ãƒ¼ã‚«ãƒ¼ã¨ã—ã¦æ‹›ã‹ã‚ŒãŸãƒ¦ãƒ¼ã‚¶ãƒ¼ä¼æ¥ã®ã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒˆã‚‰ãŒã€Java EEã¸ã®å–ã‚Šçµ„ã¿çŠ¶æ³ã‚’ç›´æŽ¥ç´¹ä»‹ã—ã¦ã„ã‚‹ç‚¹ã ã€‚ä»Šå›žã®ã‚»ãƒŸãƒŠãƒ¼ã§ã‚²ã‚¹ãƒˆãƒ»ã‚¹ãƒ”ãƒ¼ã‚«ãƒ¼ã¨ã—ã¦ç™»å£‡ã—ãŸã®ã¯ã€æœ¬ã‚µã‚¤ãƒˆè¨˜äº‹ã€Œåˆã‚ã¦ã®Java EE 6é–‹ç™ºï¼ æœ€åˆã®å£ã‚’ã©ã†ä¹—ã‚Šè¶ŠãˆãŸ
ryoasai 2014/05/19
java

é–‹ç™º
ãƒªãƒ³ã‚¯
JJUG CCC 2014 Spring ( #jjug_ccc ) - ã‚»ãƒƒã‚·ãƒ§ãƒ³è³‡æ–™ã®ä¸€è¦§ - åœ°å¹³ç·šã«è¡Œã
JJUG CCC 2014 Spring ã«è¡Œã£ã¦ãã¾ã—ãŸï¼ æœ€åˆã¯ãƒ•ãƒ«ã«å‚åŠ ã™ã‚‹ã¨æ™‚é–“ãŒé•·ãã¦ã—ã‚“ã©ã„ã‹ãªãƒ¼ã¨æ€ã£ãŸã‚“ã§ã™ãŒã€ãã‚“ãªã®ãŒæ°—ã«ãªã‚‰ãªã„ãã‚‰ã„æ„Ÿè¦šçš„ã«çŸã„ä¸€æ—¥ã§ã—ãŸã€‚ ãƒ–ãƒã‚°ã‚„æœ¬ã§èªã‚€ã‚ˆã‚Šã‚‚æ¿ƒãã¦æ–°ã—ã„è©±ãŒèžã‘ã¦ã¨ã¦ã‚‚æ¥½ã—ã‹ã£ãŸã§ã™ã€‚ ï¼ˆå€‹äººçš„ã«ã€JVMé–¢ä¿‚ã®è©±ãŒé¢ç™½ã‹ã£ãŸã§ã™ï¼ï¼‰ æ®‹å¿µãªãŒã‚‰ã€æ™‚é–“ãŒã‹ã¶ã£ã¦ã—ã¾ã£ã¦å‚åŠ ã§ããªã‹ã£ãŸã‚»ãƒƒã‚·ãƒ§ãƒ³ã‚‚ã‚ã£ãŸã®ã§ã€ã‚ã¨ã§èªã‚€ãŸã‚ã«ç¾æ™‚ç‚¹ã§ç™ºè¡¨è€…ã®æ–¹ãŒå…¬é–‹ã•ã‚Œã¦ã„ã‚‹è³‡æ–™ä¸€è¦§ã‚’ã¾ã¨ã‚ã—ã¾ã—ãŸã€‚*1 ï¼ˆã‚ã¨ã§ JJUG CCC 2014 Spring ã®ãƒšãƒ¼ã‚¸ã«ã‚‚ãƒªãƒ³ã‚¯ãŒè¼‰ã‚‹ã¨æ€ã†ã‚“ã§ã™ãŒã€ã¨ã‚Šã‚ãˆãšè‡ªåˆ†ã®æ–¹ã§èª¿ã¹ã¾ã—ãŸï¼‰ åŸºèª¿è¬›æ¼” K-1 è©³èª¬ Java SE 8 â€“ CCC Edition / æ«»åº ç¥ä¸€ (Java in the Box) è©³èª¬ Java SE 8 - CCC Edition - K-2 Java 8 ãƒ©ãƒ ãƒ€å¼ã¨ St
ryoasai 2014/05/18
jjug

java
ãƒªãƒ³ã‚¯
Java8ã§Listã¨ã‹Mapã«è¿½åŠ ã•ã‚ŒãŸãƒ¡ã‚½ãƒƒãƒ‰ã‚’ã„ãã¤ã‹è©¦ã—ã¦ã¿ã‚‹ - Qiita
Deleted articles cannot be recovered. Draft of this article would be also deleted. Are you sure you want to delete this article?
ryoasai 2014/05/18
ã‚¹ãƒˆãƒªãƒ¼ãƒ ã ã‘ã§ãªãã€Collectionã‚„Mapã¨ã„ã£ãŸå¾“æ¥ã®ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ•ã‚§ãƒ¼ã‚¹ã‚‚ã„ã‚ã„ã‚ä¾¿åˆ©ã«ãªã£ã¦ã„ã‚‹

java

java8
ãƒªãƒ³ã‚¯
JJUG CCC 2014 Spring #jjug_ccc
5/18ã«è¡Œã‚ã‚ŒãŸJJUG CCC 2014 Springã®ãƒ„ã‚¤ãƒ¼ãƒˆã‚’ã¾ã¨ã‚ã¾ã—ãŸã€‚å½“æ—¥ã¨ç¿Œæ—¥åˆ†ã‚’ã»ã¼åæ˜ æ¸ˆã¿ã§ã™ã€‚ ã‚¿ã‚¤ãƒ ãƒ†ãƒ¼ãƒ–ãƒ« (ã‚»ãƒƒã‚·ãƒ§ãƒ³ã”ã¨ã®ãƒãƒƒã‚·ãƒ¥ã‚¿ã‚°ã‚ã‚Š) http://www.java-users.jp/?page_id=1026 ã‚»ãƒƒã‚·ãƒ§ãƒ³ä¸€è¦§ (ç™ºè¡¨è³‡æ–™ãƒªãƒ³ã‚¯ã‚ã‚Š) http://www.java-users.jp/?page_id=1048 YujiSoftware ã•ã‚“ãŒã¾ã¨ã‚ãŸã‚»ãƒƒã‚·ãƒ§ãƒ³è³‡æ–™ä¸€è¦§ (ç°¡æ½”ã«ã¾ã¨ã¾ã£ã¦ã„ã¾ã™) ç¶šãã‚’èªã‚€
ryoasai 2014/05/18
Java

jjug

å‹‰å¼·ä¼š
ãƒªãƒ³ã‚¯
AspectJ in Action - é”äººãƒ—ãƒã‚°ãƒ©ãƒžãƒ¼ã‚’ç›®æŒ‡ã—ã¦
AspectJ in Action: Enterprise AOP with Spring Applications ä½œè€…: Ramnivas Laddadå‡ºç‰ˆç¤¾/ãƒ¡ãƒ¼ã‚«ãƒ¼: Manning Publicationsç™ºå£²æ—¥: 2009/10/08ãƒ¡ãƒ‡ã‚£ã‚¢: ãƒšãƒ¼ãƒ‘ãƒ¼ãƒãƒƒã‚¯ ã‚¯ãƒªãƒƒã‚¯: 6å›žã“ã®å•†å“ã‚’å«ã‚€ãƒ–ãƒã‚° (2ä»¶) ã‚’è¦‹ã‚‹Manningã®in actionã‚·ãƒªãƒ¼ã‚ºã¯MEAPï¼ˆManning Early Access Programï¼‰ã¨ã„ã†äº‹å‰è©•ä¾¡ãƒ—ãƒã‚»ã‚¹ã‚’é€šã—ã¦ã€ã‚¯ã‚ªãƒªãƒ†ã‚£ãƒ¼ã‚’ååˆ†ã«é«˜ã‚ã¦ã‹ã‚‰å‡ºç‰ˆã•ã‚Œã‚‹ã“ã¨ã‚‚ã‚ã‚Šã€æ¯”è¼ƒçš„ã‚ãŸã‚Šã¯ãšã‚ŒãŒå°‘ãªãè‰¯æ›¸ãŒå¤šã„ã¨æ€ã„ã¾ã™ã€‚ï¼ˆMEAPç‰ˆã‚’è²·ã‚ãªã„ã¨å¤šå°‘ã‚¿ã‚¤ãƒ ãƒªãƒ¼ã•ã§ã¯åŠ£ã‚‹å‚¾å‘ãŒã‚ã‚‹ã‚ˆã†ã§ã™ãŒã€‚ï¼‰ å†…å®¹ã‚‚ã¡ã‚‡ã†ã©ã„ã„ãƒ¬ãƒ™ãƒ«æ„Ÿã®ã‚‚ã®ãŒå¤šãã€ç§ã‚‚å‚è€ƒæ›¸ã¨ã—ã¦æ—¥é ƒã‹ã‚‰ã„ã‚ã„ã‚ã¨ãŠä¸–è©±ã«ãªã£ã¦ã„ã‚‹ã‚·ãƒªãƒ¼ã‚ºãªã®ã§ã™ãŒã€ã“ã®æœ¬ã¯æœ€è¿‘ã®in actionã‚·ãƒªãƒ¼ã‚ºã®
ryoasai 2014/05/18
ã“ã®ã‚¨ãƒ³ãƒˆãƒªæ›¸ã„ãŸã®ã‚‚çµæ§‹å‰ã®ã“ã¨ãªã‚“ã§ã™ãã€‚ãŸã ã“ã®æœ¬ã®å†…å®¹ã¯ãã‚Œã»ã©ã¾ã ã¾ã å½¹ã«ç«‹ã¤ã¯ãšã€‚æœ€è¿‘ã¯ãƒ•ãƒ§ãƒãƒ¼ã—ã¦ã„ã¾ã›ã‚“ãŒã€java8ã«å¯¾å¿œã—ãŸã®ã‹ãªï¼Ÿ

java

aspectj
ãƒªãƒ³ã‚¯
How can I generate an MD5 hash in Java?
ryoasai 2014/05/16
java
ãƒªãƒ³ã‚¯
Java 8ã®Optionalã‚’Groovyã‹ã‚‰è¶…ç°¡æ½”ã«ä½¿ç”¨ã™ã‚‹ - uehaj's blog
çµè«– Java8ã®Optionalã¯è¶…ã™ã£ãã‚Šæ‰±ãˆã‚‹ã‚ˆã€ãã†ã€Groovyãªã‚‰ãã€‚ Optionalã£ã¦ä½•? Java 8ã§å°Žå…¥ã•ã‚Œã‚‹æ–°è¦ã‚¯ãƒ©ã‚¹ã®ä¸€ã¤ã€java.util.Optionalã¯ã€ãƒ¡ã‚½ãƒƒãƒ‰ã®å®Ÿè¡Œçµæžœã§æˆåŠŸã™ã‚‹å ´åˆã¨å¤±æ•—ã™ã‚‹å ´åˆãŒã‚ã‚‹ã¨ãã«ã€ãã®è¿”ã‚Šå€¤ã§æˆåŠŸã¨å¤±æ•—ã‚’è¡¨ç¾ã™ã‚‹ãŸã‚ã®ã‚‚ã®ã§ã™ã€‚ Opitonalã¯å˜ä¸€è¦ç´ ã‚’ä¿æŒã™ã‚‹ã‚³ãƒ³ãƒ†ãƒŠåž‹ã€‚æˆåŠŸã—ãŸå ´åˆã¯è¿”ã‚Šå€¤ã‚’ã‚³ãƒ³ãƒ†ãƒŠã§ä¿æŒã•ã›ãŸã‚‚ã®ã‚’è¿”ã™ã€‚(æˆåŠŸæ™‚ã®è¿”ã‚Šå€¤ã‚’ãƒ©ãƒƒãƒ”ãƒ³ã‚°ã™ã‚‹) ã€Œå¤±æ•—ã€ã¯å›ºå®šã®ã‚·ãƒ³ã‚°ãƒ«ãƒˆãƒ³(Optional.empty())ã¨ã—ã¦æ‰±ã† ã¾ã‚ã€ãã‚Œã ã‘ã®è©±ã¨ã„ãˆã°ãã‚Œã ã‘ãªã®ã§ã™ãŒã€åŠ¹æžœã¯ã€ å¤±æ•—ã®ã‚ã‚‹å¯èƒ½æ€§ã®ã‚ã‚‹ãƒ¡ã‚½ãƒƒãƒ‰ã¨ç„¡ã„ãƒ¡ã‚½ãƒƒãƒ‰ã‚’ã‚³ãƒ¡ãƒ³ãƒˆã§ã¯ãªããƒ—ãƒã‚°ãƒ©ãƒ ã®ä¸€éƒ¨ã¨ã—ã¦æ˜Žç¤ºã—ã€ä¸¡è€…ã®é•ã„ã‚’ã‚³ãƒ¼ãƒ‡ã‚£ãƒ³ã‚°ä¸Šã‚‚åŒºåˆ¥ã™ã‚‹ å¤±æ•—ã®ã‚ã‚‹å¯èƒ½æ€§ã®ã‚ã‚‹ãƒ¡ã‚½ãƒƒãƒ‰ã¨ç„¡ã„æ··åœ¨ãƒ»æ··åŒã™ã‚‹ã“ã¨ã®ãªã„ã‚ˆã†ã«ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«æ™‚ãƒã‚§ãƒƒã‚¯ã‚’ã§ãã‚‹ã‚ˆã†
ryoasai 2014/05/13
java

java8

Groovy
ãƒªãƒ³ã‚¯
Java8ã§ã®ãƒ—ãƒã‚°ãƒ©ãƒ ã®æ§‹é€ ã‚’å¤‰ãˆã‚‹Optionalã€ãŸã ã—ãƒ¢ãƒŠãƒ‰ã§ã¯ãªã„ - ãã—ã ã®Hatena
â€» 5/29 3:23 è¿½è¨˜ï¼šãªã‚“ã‹ãƒ¢ãƒŠãƒ‰ã«ãªã£ãŸã‹ã‚‚ã€‚æœ€ä¸‹éƒ¨å‚ç…§ ã•ã¦ã€Java8ã§ã®æ‹¡å¼µã‚’ã„ã‚ã„ã‚è¦‹ã¦ããŸã‚ã‘ã§ã™ãŒã€ã§ã¯ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ãƒ—ãƒã‚°ãƒ©ãƒ ã§Functionã‚’å—ã‘å–ã‚‹ãƒ¡ã‚½ãƒƒãƒ‰ã‚’ãŒã‚“ãŒã‚“å®šç¾©ã™ã‚‹ã‹ã¨ã„ã†ã¨ãã†ã„ã†ã“ã¨ã¯ã‚ã¾ã‚Šãªãã€ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯çš„ãªéƒ¨åˆ†ã§æ•°å€‹å®šç¾©ã™ã‚‹æ„Ÿã˜ã«ãªã‚‹ã¨æ€ã„ã¾ã™ã€‚ã‚‚ã¡ã‚ã‚“æ•°å€‹ã§ã‚‚åŠ¹æžœã¯ã§ã‹ã„ã®ã§ã™ãŒã€‚ ã¾ãŸã€ãŠãã‚‰ãStreamã‚’å—ã‘å–ã£ãŸã‚Šè¿”ã—ãŸã‚Šã™ã‚‹ãƒ¡ã‚½ãƒƒãƒ‰ã‚’å®šç¾©ã™ã‚‹ã“ã¨ã¯ã€ã‚ã£ãŸã«ãªã„ã®ã§ã¯ãªã„ã‹ã¨æ€ã„ã¾ã™ã€‚ Mapã§ã®æ‹¡å¼µã‚‚ã€ãƒ¡ã‚½ãƒƒãƒ‰å†…éƒ¨ã§ã®å‡¦ç†è¨˜è¿°ãŒã‹ã‚ã‚‹è©±ã§ã€ãƒ¡ã‚½ãƒƒãƒ‰ã®å¼•æ•°ã‚„æˆ»ã‚Šå€¤ã¯Mapã®ã¾ã¾å¤‰ã‚ã‚Šã‚ã‚Šã¾ã›ã‚“ã€‚ Javaã§ã®ãƒ—ãƒã‚°ãƒ©ãƒ ã®æ§‹é€ ã¨ã„ã†ã®ã¯ã€ãƒ¡ã‚½ãƒƒãƒ‰ã®å¼•æ•°ã‚„æˆ»ã‚Šå€¤ã®åž‹ãŒãªã‚“ã§ã‚ã‚‹ã‹ã§æ±ºã¾ã‚‹ã¨è¨€ã†ã“ã¨ãŒã§ãã¾ã™ã€‚ãã®æ„å‘³ã§ã¯ã€lambdaã‚„Streamã¨ã„ã†ã®ã¯å‡¦ç†ã®è¨˜è¿°ã¯å¤‰ã‚ã‚‹ã‘ã©ãƒ—ãƒã‚°ãƒ©ãƒ ã®æ§‹é€ ã¯å¤‰ã‚ã‚‰ãªã„ã¨ãªã‚Šã¾ã™ã€‚ ã‘ã‚Œã©ã‚‚
ryoasai 2014/05/12
java

java8
ãƒªãƒ³ã‚¯
1 2 3 4 5 6 7 8 9 10 æ¬¡ã®ãƒšãƒ¼ã‚¸