{"id":4015,"date":"2021-11-28T13:10:52","date_gmt":"2021-11-28T04:10:52","guid":{"rendered":"https:\/\/www.skyer9.pe.kr\/wordpress\/?p=4015"},"modified":"2021-11-28T13:19:12","modified_gmt":"2021-11-28T04:19:12","slug":"java-synchronized","status":"publish","type":"post","link":"https:\/\/www.skyer9.pe.kr\/wordpress\/?p=4015","title":{"rendered":"java synchronized"},"content":{"rendered":"

java synchronized<\/h1>\n

\ucc38\uc870<\/a><\/p>\n

\uc815\uc758<\/h2>\n

Multi Thread \uc0c1\ud669\uc5d0\uc11c \ud2b9\uc815 \ub370\uc774\ud0c0\uc758 \ub3d9\uae30\ud654\ub97c \ubcf4\uc7a5\ud558\ub294 \ud0a4\uc6cc\ub4dc\uc774\ub2e4.<\/p>\n

\ub370\uc774\ud0c0\uc758 \uc548\uc815\uc131\uacfc \uc2e0\ub8b0\uc131\uc744 \ubcf4\uc7a5\ud558\ub294 \ud0a4\uc6cc\ub4dc\uc774\uc9c0\ub9cc,
\n\ud558\ub098\uc758 Thread \ub9cc \ub370\uc774\ud0c0\uc5d0 \uc811\uadfc \uac00\ub2a5\ud558\uace0, \ub2e4\ub978 Thread \ub294 \ub370\uc774\ud0c0\uc5d0 \uc811\uadfc\ud560 \uc218 \uc5c6\ub2e4.<\/p>\n

\uc989, \ub370\uc774\ud0c0\uc5d0 \uc811\uadfc\ud558\ub294 \ub2e4\ub978 \ubaa8\ub4e0 Thread \ub294 \uc2e4\ud589\uc774 \uba48\ucd94\uac8c \ub41c\ub2e4.<\/p>\n

\uc0ac\uc6a9\ubc95<\/h2>\n

\uba54\uc11c\ub4dc\uc5d0\uc11c \uc0ac\uc6a9<\/h3>\n

\ud558\ub098\uc758 Thread \ub9cc \uba54\uc18c\ub4dc\ub97c \ud638\ucd9c\ud560 \uc218 \uc788\ub2e4.<\/p>\n

public class TestThread {\n\n    public static void main(String[] args) {\n\n        TestThread thread = new TestThread();\n\n        System.out.println("Test start!");\n\n        new Thread(() -> {\n            for (int i = 1; i <= 5; i++) {\n                thread.call("Thread A");\n            }\n        }).start();\n\n        new Thread(() -> {\n            for (int i = 1; i <= 5; i++) {\n                thread.call("Thread B");\n            }\n        }).start();\n\n        System.out.println("Test end!");\n    }\n\n    public synchronized void call(String who) {\n\n        System.out.println(who + " started.");\n        try {\n            System.out.println(who);\n            long sleep = (long) (Math.random() * 100);\n            Thread.sleep(sleep);\n        } catch (InterruptedException e) {\n            e.printStackTrace();\n        }\n        System.out.println(who + " ended.");\n    }\n}<\/code><\/pre>\n
Test start!\nTest end!\nThread A started.\nThread A\nThread A ended.\nThread B started.\nThread B\nThread B ended.\nThread A started.\nThread A\nThread A ended.\nThread B started.\nThread B\nThread B ended.\nThread A started.\nThread A\nThread A ended.\nThread B started.\nThread B\nThread B ended.\nThread B started.\nThread B\nThread B ended.\nThread A started.\nThread A\nThread A ended.\nThread B started.\nThread B\nThread B ended.\nThread A started.\nThread A\nThread A ended.<\/code><\/pre>\n
\ubcc0\uc218\uc5d0 \uc0ac\uc6a9<\/h3>\n
public class TestThread {\n\n    final Integer COUNT = 0;\n\n    public static void main(String[] args) {\n\n        TestThread thread = new TestThread();\n\n        System.out.println("Test start!");\n\n        new Thread(() -> {\n            for (int i = 1; i <= 5; i++) {\n                thread.call("Thread A");\n            }\n        }).start();\n\n        new Thread(() -> {\n            for (int i = 1; i <= 5; i++) {\n                thread.call("Thread B");\n            }\n        }).start();\n\n        System.out.println("Test end!");\n    }\n\n    public void call(String who) {\n\n        System.out.println(who + " started.");\n        try {\n            synchronized(COUNT) {\n                System.out.println(who + " COUNT started.");\n                System.out.println(who);\n                long sleep = (long) (Math.random() * 100);\n                Thread.sleep(sleep);\n                System.out.println(who + " COUNT ended.");\n            }\n        } catch (InterruptedException e) {\n            e.printStackTrace();\n        }\n        System.out.println(who + " ended.");\n    }\n}<\/code><\/pre>\n
Test start!\nTest end!\nThread A started.\nThread B started.\nThread A COUNT started.\nThread A\nThread A COUNT ended.\nThread B COUNT started.\nThread B\nThread A ended.\nThread A started.\nThread B COUNT ended.\nThread B ended.\nThread B started.\nThread B COUNT started.\nThread B\nThread B COUNT ended.\nThread A COUNT started.\nThread A\nThread B ended.\nThread B started.\nThread A COUNT ended.\nThread B COUNT started.\nThread B\nThread A ended.\nThread A started.\nThread B COUNT ended.\nThread A COUNT started.\nThread A\nThread B ended.\nThread B started.\nThread A COUNT ended.\nThread B COUNT started.\nThread B\nThread A ended.\nThread A started.\nThread B COUNT ended.\nThread A COUNT started.\nThread A\nThread B ended.\nThread B started.\nThread A COUNT ended.\nThread B COUNT started.\nThread B\nThread A ended.\nThread A started.\nThread B COUNT ended.\nThread B ended.\nThread A COUNT started.\nThread A\nThread A COUNT ended.\nThread A ended.<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
java synchronized \ucc38\uc870 \uc815\uc758 Multi Thread \uc0c1\ud669\uc5d0\uc11c \ud2b9\uc815 \ub370\uc774\ud0c0\uc758 \ub3d9\uae30\ud654\ub97c \ubcf4\uc7a5\ud558\ub294 \ud0a4\uc6cc\ub4dc\uc774\ub2e4. \ub370\uc774\ud0c0\uc758 \uc548\uc815\uc131\uacfc \uc2e0\ub8b0\uc131\uc744 \ubcf4\uc7a5\ud558\ub294 \ud0a4\uc6cc\ub4dc\uc774\uc9c0\ub9cc, \ud558\ub098\uc758 Thread \ub9cc \ub370\uc774\ud0c0\uc5d0 \uc811\uadfc \uac00\ub2a5\ud558\uace0, \ub2e4\ub978 Thread \ub294 \ub370\uc774\ud0c0\uc5d0 \uc811\uadfc\ud560 \uc218 \uc5c6\ub2e4. \uc989, \ub370\uc774\ud0c0\uc5d0 \uc811\uadfc\ud558\ub294 \ub2e4\ub978 \ubaa8\ub4e0 Thread \ub294 \uc2e4\ud589\uc774 \uba48\ucd94\uac8c \ub41c\ub2e4. \uc0ac\uc6a9\ubc95 \uba54\uc11c\ub4dc\uc5d0\uc11c \uc0ac\uc6a9 \ud558\ub098\uc758 Thread \ub9cc \uba54\uc18c\ub4dc\ub97c \ud638\ucd9c\ud560 \uc218 \uc788\ub2e4. public class TestThread { public\u2026 Read More »<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-4015","post","type-post","status-publish","format-standard","hentry","category-java"],"_links":{"self":[{"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/4015","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4015"}],"version-history":[{"count":2,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/4015\/revisions"}],"predecessor-version":[{"id":4017,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/4015\/revisions\/4017"}],"wp:attachment":[{"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4015"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4015"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.skyer9.pe.kr\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4015"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}