2023/5/10(æ°´)ã«éå¬ãããTechFeed Experts Night#18ã§ã®ç»å£è³æã§ãã https://techfeed.io/events/techfeed-experts-night-18
6. æ´å² Javaã®æ´å² ⢠Sun Microsystemsã1995å¹´ã«1.0ãçºè¡¨ »Sunã¯2010å¹´ã«Oracleã«è²·åããã ⢠æ¨æºä»æ§ãçå®ãã¦å®è£ ãããã¨ãããªã¼ãã³ãªããã»ã¹ »Java SE 12ã¯ãä»æ§ããOpenJDK 12ã¯ãå®è£ ã »ãã®æç¹ã§ã¯åå®è£ ã¯ãªã¼ãã³ã½ã¼ã¹ã§ã¯ãªã ⢠Java Community Processï¼1998å¹´è¨â½´ï¼ãéãã¦çå® Â»å½åã¯Sunãä¸â¼¼ã«ãã³ãã¼å社ãæ¨æºä»æ§ãçå® Â»æ£å¼è£½åã«ãªãããã«ã¯Sunã«ããèªå®ãå¿ è¦ â¸Technology Compatibility Kitï¼TCKï¼ 5 Java Community Process https://www.jcp.org/ 7. æ´å² Apache Software Foundation ⢠1999å¹´è¨â½´ãããâ¾®å¶å©å£ä½ »NASAãéçºãã¦ããHTTPDã®ãµãã¼ãã
Oracle JDKãå«ãOpenJDKãã£ã¹ããªãã¥ã¼ã·ã§ã³(以ä¸ãJavaã¾ãã¯JDK)ã«ã¯JFRãçé ã«ãã¾ãã¾ãªåæãã¼ã«/ä»çµã¿ãããã¾ãã JDK7ããJDK12ã«ããã¦ãã¬ã³ããå¤ãã£ãé¨åãããã®ã§ãå°ããµãã£ãã¡ã¢ãæ¸ãã¾ãã ã¡ããªã¯ã¹åå¾ã®ããã®ä»çµã¿ Javaã«ã¯ããã©ã¼ãã³ã¹ã¡ããªã¯ã¹ãåå¾ããããã®æ¹æ³ãããã¤ãããã¾ãã代表çãªã®ã¯ä¸è¨ã®3ã¤ã§ãããã JMX ãã° JPLIS(javaagent) JMX Java Management Extensions(JMX)ã¯Javaã®ãªã½ã¼ã¹ç£è¦ããã³ç®¡çã®ããã®ãããã³ã«ã§ããç°¡åã«ããã°Javaçã®SNMPã§ãã JSR-174ã¨ãã¦Java 1.5ããåãè¾¼ã¾ãã¦ãã¾ãã Managed Bean(MBean)ãå©ç¨ãã¦CPUãã¡ã¢ãªã®æ å ±ãåå¾ããããç¹å®ã®ã¤ãã³ã(ä¾ãã°å¼·å¶GC)ã¨ããå®è¡ãããã¨ãå¯
2. â¾â¼°ç´¹ä» ⢠CTCãã¯ããã¸ã¼æå±: ãã«ããã³ãã¼ã®ããã«ã¦ã§ã¢æè¡ãµãã¼ã - Oracle Fusion Middleware - Red Hat JBoss Middleware - ãã®ä» Java ãâ¼é¨å©â½¤ããããã«ã¦ã§ã¢è£½å ⢠ã³ãã¥ãã㣠- Twitter: @yamadamn - å : Oracle ACE (Middleware) - ç¾å¨: â½æ¬GlassFishã¦ã¼ã¶ã¼ä¼ ç£äº - æ¬â½: OpenJDKè¦å¯ OpenJDKã½ã ãªã¨ #kanjava #okajug #jjug #OpenJDKã½ã ãªã¨ 3. å 責äºé ⢠Oracle 㨠Java ã¯ãOracle Corporation ããã³ãã®â¼¦ä¼ç¤¾ã»é¢é£ä¼ç¤¾ ã®â½¶å½ããã³ãã®ä»ã®å½ã«ãããç»é²åæ¨ã§ããâ½ä¸ã®ç¤¾åã»ååå ãªã©ã¯ãå社ã®åæ¨ã¾ãã¯ç»é²åæ¨ã§ããå ´åãããã¾ãã ⢠çºè¡¨ããå
æè¿ JVM ã®ãã¼ãé åã¨ãã©ã¡ã¼ã¿ãããã¦ã³ã³ããã®é¢ä¿ã«ã¤ãã¦èª¿ã¹ã¦ã¾ããã æ¡å¤ã¾ã¨ã¾ã£ãæ å ±ãå°ãªãã£ãã®ã§ç°¡åã«ã¾ã¨ãã¾ããã Java ã®ãã¼ããµã¤ãºãè¨å® ã¾ã㯠Java ã®ãã¼ããµã¤ãºã«ã¤ãã¦ç°¡åãªããããã§ãã æ¬çªç°å¢ã§ Java ã¢ããªã±ã¼ã·ã§ã³ãéç¨ããä¸ã§ãJVM ã®ãã¼ããµã¤ãºã決å®ããã®ã¯é常ã«å¤§äºãªãã¤ã³ãã§ãã ãã¼ãé åã®æ大ãµã¤ãºã大ããããã°ã¬ãã¼ã¸ã³ã¬ã¯ã·ã§ã³ (GC) ã®åæ°ã¯æ¸ãããã¨ãã§ãã¾ããã å¿ è¦ä»¥ä¸ã«å¤§ããããããã¨ç¡é§ã«ãªã½ã¼ã¹ãæ¶è²»ããããOOM killer 㧠OS ã«ããã»ã¹ãçµäºããããã¾ãã JVM ã使ç¨ã§ãããã¼ããµã¤ãºã¯ãJava API ã® Runtime.getRuntime().maxMemory() ã§ç¢ºèªã§ãã¾ãã ã¾ã java ã®èµ·åãªãã·ã§ã³ã« -XX:+PrintFlagsFinal ãªãã·ã§
追è¨ï¼å¯¾è±¡ã¨ãã¦ããJavaã¨ã³ã¸ãã¢ã®ç¯å²ã大è¢è£ã«ããããããªã¨æãã¾ããã®ã§ããã®è¾ºãä¿®æ£ãã¾ããã ãªãæ¸ããã®ã ã¿ã¤ãã«ã®ä»¶ã§ãããæèè ã®æ¹ã ãæ§ã ãªåªä½ãå ´æã§çºä¿¡ãããã¦ãããããã§ã以åã«æ¯ã¹ã¦å°ãªããªã£ãã¨æãã¦ã¯ãããã®ã®ãã¾ã æã 誤解ãæããã¦ãããJavaãæååãããã¨åããã¦ããã¨ã³ã¸ãã¢ã®æ¹ããã¾ã«è¦ããã¾ãã Oracle JDK 8ããã³OpenJDK 11ãããããæå¾ã®ç¡åã¢ãããã¼ãããªãªã¼ã¹ãããããããæåã¾ãã¯ç¡åã®LTSã§ã¢ãããã¼ããåãç¶ããããOpenJDK 12ã«ç§»è¡ããã®ãã¨ãã£ãé¸æã決ãã¦ããç¶æ³ã«ãªãæã«ã¾ã ãã®ãããªèª¤è§£ãæã£ãã¾ã¾ã§ããã®ããªã¨æãã¾ããã ããã§èªåã®çµé¨ãåºã«èª¤è§£ãããå´ã®ç«å ´ã«ãªã£ã¦ããªããJavaãæååãããã¨ãã誤解ãçã¾ããã®ããèå¯ãã¦ã¿ããã¨æãã¾ããã å°ããã®å 容ã¯å人ã®è¦è§£ã§ãé
æ®å¿µãªãããã°ãã誤解ãç¶ããããªã®ã§ãç§ä»¥å¤ã®æèè ããã®çºä¿¡ãä¸å¿ã«ã¾ã¨ãã¾ããã¾ããJavaã®ä¸å¿çãªç¨èªã«ã¤ãã¦ã¯ https://qiita.com/nowokay/items/c1de127354cd1b0ddc5e ãåç §ãã ããã ã¾ããSunæ代ãã延é·ã¢ãããã¼ããå«ãåç¨ãµãã¼ãã¯æåã§ããhttps://www.atmarkit.co.jp/ad/sun/0810javaseforb/0810javaseforb.html 次ã®ããã°ãããªã³ã¯ããã¦ããè¨äºãã©ããã ãã§ãããã®ã§èªããã¨ããªã¹ã¹ã¡ãã¾ããhttp://tadashi.hatenablog.com/entry/2019/01/17/091324 ã»ãã·ã§ã³è³æãããããã®JDK ä½ãé¸ã¶ï¼ã©ãé¸ã¶ï¼ãhttps://www.slideshare.net/TakahiroYamada3/how-to-
Docker ç°å¢ä¸ã§ Java ã®ã¢ããªãèµ·åããã®ã¯é ãã¨æã£ã¦ããã£ãããæ¹ã¯å¿ è¦!! ã©ããä¸è¨ã®å 容ããåç §ããã ããã©ããã試ããã ããï¼ï¼ å æ¥ãRed Hat ãã Quarkus (https://quarkus.io) ã¨ããæ°ããæè¡ãçºè¡¨ããã¾ããããã¡ããå®éã«è©¦ãã¦è¦ã¾ããããæ³å®éãã¨ããããã¾ãã«ãããå¾ ã£ã¦ããï¼ï¼ã¨ããæè¡ã§ãããä»å¾ãç§ã®ä¸ã§æ³¨ç®ã®æè¡ã®ä¸ã¤ã«ãªãããã§ãããããDocker/k8s ä¸ã§ Java ã¢ããªãåããæ¹ã¯ããã¡ãã®æ¹æ³ãã覧ããã ãããã²è©¦ããã ããã Quarkus ãç°¡åã«ã説æããã¨ãJava ã®ã½ã¼ã¹ã³ã¼ãã GraalVM ãå©ç¨ã㦠Linux ã® Native ãã¤ããªãä½æãããã® Linux ãã¤ããªãã³ã³ããä¸ã§èµ·åãããã¨ã«ãããä»ã¾ã§ Java ã¢ããªã®èª²é¡ã§ãã£ãèµ·åæéãå¤§å¹ ã«ç縮ãããã¨ãã§ã
Deleted articles cannot be recovered. Draft of this article would be also deleted. Are you sure you want to delete this article? ã¯ããã« Oracle JDK/JRE 8ã®Public Updates1ãåç¨ã¦ã¼ã¶ã¼ã«å¯¾ãã¦ã¯2019å¹´1æã¾ã§ã§çµäºãã2019å¹´4æã®ãªãªã¼ã¹ããã©ã¤ã»ã³ã¹ãå¤æ´ããããããå¥ã®JDKãã£ã¹ããªãã¥ã¼ã·ã§ã³ã¸ã®åãæ¿ããèãã¦ããæ¹ãå¤ãã¨æãã¾ãã ããããç¹ã«Oracle JDK 8ã¾ã§ã¯ãç´ ã®OpenJDKã«ã¯ãªã2æ©è½ãå¤ãåå¨ãã¾ãã å®æã«åãæ¿ãã¦ãã©ãã«ã«ãªããªãããã«ãOracle JDK 8ã«ã¯ããããä¸è¬çãªOpenJDKãã£ã¹ããªãã¥ã¼ã·ã§ã³3ã«ã¯ãªãæ©è½ãç¡åã»æåå¥ã«ã¾ã¨ãã¦ã¿ã¾ãã Oracle J
Deleted articles cannot be recovered. Draft of this article would be also deleted. Are you sure you want to delete this article? ãã®è¨äºå 容ã¯å¤ãã®ã§ãä¸è¨ãªã³ã¯å ã®æ¹ã®è¨äºããåç §ãã ããã <2021/1追è¨> OpenJDKã¨å種JDKãã£ã¹ããªãã¥ã¼ã·ã§ã³ã®æ å ±æºã¾ã¨ã #minjavaï¼@yamadamnããããï¼ <以ä¸ãè¨äºæ¬æï¼2018å¹´ããã¾ã§ã®ã¾ã¨ãã®åèã¨ãããã¨ã§ãæ®ãã¦ããã¾ãã> [å 責] å¯è½ãªéãæ£ç¢ºãªæ å ±ãæ²è¼ããããåªãã¦ãã¾ããã誤æ å ±ãå ¥ãè¾¼ãã ããæ å ±ãå¤ããªã£ãããããã¨ãããã¾ããå¿ ãããæ£ç¢ºæ§ãåæ³æ§ãå®å ¨æ§ãä¿è¨¼ãããã®ã§ã¯ãããã¾ãããï¼ãããã«æ å ±ãå¤ããªã£ã¦ããã®ã§ãæ¸ãã¦ãããã¨æãã¾ããï¼ (éè¨1)
ãã®è¨äºã¯ãSpring WebFluxã®åæã§ãããããããã³ã°ããã³ããããã³ã¯ã¨ã¯ä½ããServlet3.0ã® Async Servletã Servlet3.1ã® NonblockingI/Oã¨ã¯ä½ãããç解ãããã¨ãç®çã§ãã æ¤è¨¼ãã¼ã¸ã§ã³ > java -version java version "1.8.0_181" Java(TM) SE Runtime Environment (build 1.8.0_181-b13) Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode) > ver Microsoft Windows [Version 10.0.17134.165] @Slf4j public class BlockingAndSingleEchoServer implements EchoS
JDKã®æ°ãããªãªã¼ã¹ã»ã¢ã ããã³æä¾ã©ã¤ã»ã³ã¹ã«ã¤ã㦠ãªã©ã¯ã«ã¯2017å¹´9æãJDKã®æä¾ãµã¤ã¯ã«ã¨ã©ã¤ã»ã³ã¹æ¹å¼ã«é¢ãã¦ãæ°ããªãªãªã¼ã¹ã»ã¢ãã«ãçºè¡¨ãã¾ããã ãããã¯JDK 9ããä¸é¨ãé©ç¨ããã2018å¹´9æã«å ¬éãããJDK 11ã§å®å ¨ç§»è¡ãã¾ãããæ°ãªãªã¼ã¹ã»ã¢ãã«ã¯JDKã®éå»ã®ãªãªã¼ã¹ã»ã¢ãã«ã®èª²é¡ã解決ãããã®ã§ãããã¦ã¼ã¶ã¼ã«ããå¤ãã®ã¡ãªãããããããã¾ããæ¬è¨äºã§ã¯ãæ°ããªæä¾ãµã¤ã¯ã«ã¨ã©ã¤ã»ã³ã¹æ¹å¼ã®æ¦è¦ãããã³ãªã©ã¯ã«ã«ããJDKã®æåãµãã¼ãã«ã¤ãã¦èª¬æãã¾ãã æ¬è¨äºã§èª¬æããæ°ãªãªã¼ã¹ã»ã¢ãã«ã®ãã¤ã³ã åãã«ãæ¬è¨äºã§èª¬æããJDKã®æ°ãªãªã¼ã¹ã»ã¢ãã«ã«å¯¾å¿ãããªã©ã¯ã«ã®ãã¤ããªã»ãªãªã¼ã¹ã®ä¸»ãªãã¤ã³ããåæãã¾ãã âå¹´6åã®å®æãªãªã¼ã¹ã»ãµã¤ã¯ã« æ°æ©è½ã追å ããã6ã«æã«1å(æ¯å¹´3æã¨9æï¼ã®ãã£ã¼ãã£ã¼ã»ãªãªã¼ã¹ã«å ããèå¼±æ§å¯¾çãªã©ã
1. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. | JJUG ãã¤ãã»ããã¼ ãç·æ¥ç¹éï¼ Javaã®ç¡åçã¯ãªããªããªããï¼ã JDK: æ°ãããªãªã¼ã¹ã¢ãã«è§£èª¬ï¼ä¿®æ£çï¼ ver. 1.1 2018.6.23 (Sat) ver. 1.1 2018.6.20 (Wed) ver. 1 æ¥æ¬ãªã©ã¯ã«æ ªå¼ä¼ç¤¾ ã¯ã©ã¦ããã©ãããã©ã¼ã æ¦ç¥çµ±æ¬ ãã¸ãã¹æ¨é²æ¬é¨ ä¼è¤ æ¬ @itakash 2. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. | Safe Harbor Statement The following is intended to outline our general product dir
JDK11 ea18ãããjavacããªãã§ãJavaãã¡ã¤ã«ãå®è¡ã§ããããã«ãªãã¾ããã ãã¨ãWindowsãã¤ããªã¯zipãã¡ã¤ã«ã§æä¾ãããããã«ãªã£ã¦ãã¾ããtarã³ãã³ããæä¾ãããã¨ã¯ãããã¨ã¯ã¹ããã¼ã©ã¼ãã解åã§ããzipãã¡ã¤ã«ã«ãªãã®ã¯ ãããããã JDK 11 Early-Access Builds JEP330ãåãè¾¼ã¾ãããã¨ã«ãããã½ã¼ã¹ãã¡ã¤ã«ãã²ã¨ã¤ã®Javaããã°ã©ã ã¯ãjavacä¸è¦ã§javaã³ãã³ãã§å®è¡ã§ããããã«ãªãã¾ãã JEP 330: Launch Single-File Source-Code Programs Windowsã®ã³ãã³ãããã³ããã 㨠ãããªæãã C:\Users\naoki\java>more Hello.java public class Main { public static void main(String
社å åå¼·ä¼ã§ãJVMã®GCã«ã¤ãã¦èª¿ã¹ã¦è©±ããæã®è³æãæä½éã®ä¿®æ£ãå ãã¦å ¬éãã¦ã¾ãã寺ç°ããç£è¨³ã®ãJavaããã©ã¼ãã³ã¹ãããã¼ã¹ã«ãããã調ã¹ã¦ã¾ã¨ãã¾ãããRead less
Deleted articles cannot be recovered. Draft of this article would be also deleted. Are you sure you want to delete this article? Javaã®ãµãã¼ãã«ã¤ãã¦ã®ã¾ã¨ã Javaã®ã©ã¤ã»ã³ã¹ããµãã¼ãç¶æ³ã«ã¤ãã¦æ··ä¹±ãçºçãã¦ããããã«æãã¾ããJavaã®ãµãã¼ããåå£ä½ãã©ã®ããã«è¡ãªã£ã¦ããããã¾ã¨ãã¦ã¿ã¾ãã ç¥ã£ã¦ããã¦ã»ããã®ã¯ãJavaã®å®è£ ããµãã¼ãã¯Oracle JDKãOpenJDKã®äºæãã§ã¯ãªãAdoptOpenJDKãAzul ZuluãCorretteãªã©å¤ãã®é¸æè¢ãããã¨ãããã¨ã§ãã ããã§ãµãã¼ãã¯ãã°ãã»ãã¥ãªãã£ã«å¯¾å¿ãããããããªãªã¼ã¹ããããã¨ã表ãã¦ãã¾ãã Javaã®ãªãªã¼ã¹ãµã¤ã¯ã« ããã¾ã§ãJavaã¯3å¹´ãã¨ãç®æ¨ã«çµ
ãªãªã¼ã¹ãé害æ å ±ãªã©ã®ãµã¼ãã¹ã®ãç¥ãã
ææ°ã®äººæ°ã¨ã³ããªã¼ã®é ä¿¡
å¦çãå®è¡ä¸ã§ã
j次ã®ããã¯ãã¼ã¯
kåã®ããã¯ãã¼ã¯
lãã¨ã§èªã
eã³ã¡ã³ãä¸è¦§ãéã
oãã¼ã¸ãéã
{{#tags}}- {{label}}
{{/tags}}