IBM Developer is your one-stop location for getting hands-on training and learning in-demand skills on relevant technologies such as generative AI, data science, AI, and open source.
ã¯ã¦ãªã°ã«ã¼ãã®çµäºæ¥ã2020å¹´1æ31æ¥(é)ã«æ±ºå®ãã¾ãã 以ä¸ã®ã¨ã³ããªã®éããä»å¹´æ«ãç®å¦ã«ã¯ã¦ãªã°ã«ã¼ããçµäºäºå®ã§ããæ¨ããç¥ãããã¦ããã¾ããã 2019å¹´æ«ãç®å¦ã«ãã¯ã¦ãªã°ã«ã¼ãã®æä¾ãçµäºããäºå®ã§ã - ã¯ã¦ãªã°ã«ã¼ãæ¥è¨ ãã®ãã³ãæ£å¼ã«çµäºæ¥ã決å®ãããã¾ããã®ã§ã以ä¸ã®éãã確èªãã ããã çµäºæ¥: 2020å¹´1æ31æ¥(é) ã¨ã¯ã¹ãã¼ãå¸æç³è«æé:2020å¹´1æ31æ¥(é) çµäºæ¥ä»¥éã¯ãã¯ã¦ãªã°ã«ã¼ãã®é²è¦§ããã³æ稿ã¯è¡ãã¾ãããæ¥è¨ã®ã¨ã¯ã¹ãã¼ããå¿ è¦ãªæ¹ã¯ä»¥ä¸ã®è¨äºã«ãããã£ã¦æç¶ãããã¦ãã ããã ã¯ã¦ãªã°ã«ã¼ãã«æ稿ãããæ¥è¨ãã¼ã¿ã®ã¨ã¯ã¹ãã¼ãã«ã¤ã㦠- ã¯ã¦ãªã°ã«ã¼ãæ¥è¨ ãå©ç¨ã®ã¿ãªãã¾ã«ã¯ãè¿·æãããããããã¾ãããã©ãããããããé¡ããããã¾ãã 2020-06-25 è¿½è¨ ã¯ã¦ãªã°ã«ã¼ãæ¥è¨ã®ã¨ã¯ã¹ãã¼ããã¼ã¿ã¯2020å¹´2æ28
ã»ããã©ï¼Semaphoreï¼java.util.concurrent.Semaphoreã使ãã¨ãå¦çã®åæå®è¡æ°ãå¶éããäºãã§ãããã»ããã©ã¨è¨ãã°åæå®è¡æ°ãï¼ã«å¶éãããã®ã¨ããåæãªã¤ã¡ã¼ã¸ãæã£ã¦ããããå ¨ç¶ãããªäºã¯ãªãã final Semaphore semaphore = new Semaphore(2); Runnable r = new Runnable() { public void run() { try { System.out.println("ã¯ããããï¼"); semaphore.acquire(); System.out.println("ãã£ããã¯ã·ã®çªã"); TimeUnit.SECONDS.sleep(1); System.out.println("ã¯ããã¹ãããªããã"); semaphore.release(); } catch(Inte
â [éçº]Java5.0æ°æ©è½ã®ãåå¼·ï¼ï¼ï¼ è¤æ°éåæå¦çã®æ°ããå®è¡æ¹æ³ï¼Executorï¼ãç¶ãã ã¹ã±ã¸ã¥ã¼ã«å¯è½ãªExecutorã¨ãã¦ãScheduledExecutorServiceãããã Executors#newScheduledThreadPoolãExecutors#newSingleThreadScheduledExecutorã§çæã§ããã ï¼ã¤ã®éãã¯ååã®éããã·ã³ã°ã«ã¹ã¬ããã§å®è¡ãããã©ããã newScheduledThreadPoolã®æ¹ã§ãµã³ãã«ãæ¸ãã¦ã¿ãã ScheduledExecutorServiceã§ã¿ã¹ã¯ãç¹°ãè¿ãå®è¡ããã«ã¯äºéãã®æ¹æ³ãããã scheduleAtFixedRateï¼ã¿ã¹ã¯ãæå®ããééã§å®è¡ããã scheduleWithFixedDelayï¼ã¿ã¹ã¯ã®ååçµäºæããæå®æéçµéå¾ã«æ¬¡ã®ã¿ã¹ã¯ãå®è¡ããã Javas
æåã«è¨ã£ã¨ãã¾ããã¹ã¬ããã®ç« ã«å ¥ã£ã¦ããªãç解ããã®ã«ç²ããã®ã§ãè¨è¿°ã¬ãã«ä½ãã§ããã ã¹ã¬ããã§æªææã®ä¾å¤ãå¦çããä»ã¾ã§ãã¹ã¬ããå ã§çºçããä¾å¤ã¯ã¹ã¬ããå ã§try-catchããããææããæãç¡ãã£ããjava.lang.Thread.UncaughtExceptionHandlerã¨ããã¤ã³ã¿ãã§ã¼ã¹ã追å ããããããThreadã«ã»ããããäºã§å¤é¨ããä¾å¤æææã®å¦çãè¨è¿°ããäºãã§ããããã«ãªã£ãã Thread t = new Thread(new Runnable() { public void run() { int i=10; while(true) { System.out.println(1/i--); } } }); t.setUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler()
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}}