{"id":10441,"date":"2020-10-11T20:05:22","date_gmt":"2020-10-11T11:05:22","guid":{"rendered":"http:\/\/www.gisdeveloper.co.kr\/?p=10441"},"modified":"2020-10-25T09:20:42","modified_gmt":"2020-10-25T00:20:42","slug":"observer-%ed%8c%a8%ed%84%b4","status":"publish","type":"post","link":"http:\/\/www.gisdeveloper.co.kr\/?p=10441","title":{"rendered":"[GoF] Observer \ud328\ud134"},"content":{"rendered":"

\ud328\ud134\uba85\uce6d<\/h4>\n

Observer<\/p>\n

\ud544\uc694\ud55c \uc0c1\ud669<\/h4>\n

\uc0c1\ud0dc\uac00 \ubcc0\uacbd\ub418\uba74 \uadf8 \uc0c1\ud0dc \ubcc0\uacbd\uc5d0 \ub530\ub77c \ubc18\uc751\ud558\ub294 \uad6c\uc870\ub97c \uad6c\ud604\ud558\uae30 \uc704\ud55c \ud328\ud134\uc774\ub2e4.<\/p>\n

\uc608\uc81c \ucf54\ub4dc <\/h4>\n

\"\"<\/p>\n

\uc8fc\uc0ac\uc704 \uac8c\uc784\uc744 \uc608\uc81c\ub85c \ud55c\ub2e4. DicePlay\ub294 \uc8fc\uc0ac\uc704\ub97c \ub358\uc9c0\ub294 \uae30\ub2a5\uc744 \uc2e4\ud589\ud55c\ub2e4. Player\ub294 \uc8fc\uc0ac\uc704 \uac8c\uc784\uc5d0 \ucc38\uc5ec\ud558\ub294 \uc0ac\ub78c\ub4e4\uc774\ub2e4. Player\ub97c \uc0c1\uc18d\ubc1b\ub294 OddBettingPlayer\ub294 \ud640\uc218\uc5d0 \ubc30\ud305\uc744 \uac70\ub294 \uc0ac\ub78c\uc774\uace0, EvenBettingPlayer\ub294 \uc9dd\uc218\uc5d0 \ubc30\ud305\uc744 \uac70\ub294 \uc0ac\ub78c\uc774\ub2e4. \uc8fc\uc0ac\uc704 \uac8c\uc784\uc5d0 \ucc38\uc5ec\ud558\uba74, \uc8fc\uc0ac\uc704\uac00 \ub358\uc838\uc9c8\ub54c \uc790\ub3d9\uc73c\ub85c \uac8c\uc784\uc5d0 \ucc38\uc5ec\ud55c \uc0ac\ub78c\ub4e4\uc758 \uc2b9\ub9ac \uc5ec\ubd80\ub97c \uc989\uc2dc \ud655\uc778\uc774 \uac00\ub2a5\ud558\ub2e4. DicePlay \ud074\ub798\uc2a4\ub294 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n

\r\npackage tstThread;\r\n\r\nimport java.util.Iterator;\r\nimport java.util.LinkedList;\r\nimport java.util.Random;\r\n\r\npublic class DicePlay {\r\n\tprivate LinkedList<Player> players = new LinkedList<Player>();\r\n\tprivate Random random = new Random();\r\n\t\r\n\tpublic void addPlayer(Player player) {\r\n\t\tplayers.add(player);\r\n\t}\r\n\t\r\n\tpublic void play() {\r\n\t\tint v = random.nextInt(6) + 1;\r\n\t\t\r\n\t\tSystem.out.println(\"Dice Number: \" + v);\r\n\t\t\r\n\t\tIterator<Player> iter = players.iterator();\r\n\t\twhile(iter.hasNext()) {\r\n\t\t\titer.next().update(v);\r\n\t\t}\r\n\t}\r\n}\r\n<\/pre>\n
Player\uc758 \ucf54\ub4dc\ub294 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n
\r\npackage tstThread;\r\n\r\npublic abstract class Player {\r\n\tprivate String name;\r\n\t\r\n\tpublic Player(String name) {\r\n\t\tthis.name = name;\r\n\t}\r\n\t\r\n\tpublic String getName() {\r\n\t\treturn name;\r\n\t}\r\n\t\r\n\tpublic abstract void update(int n);\r\n}\r\n<\/pre>\n
Player\ub97c \uc0c1\uc18d\ubc1b\ub294 OddBettingPlayer \ud074\ub798\uc2a4\ub294 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n
\r\npackage tstThread;\r\n\r\npublic class OddBettingPlayer extends Player {\r\n\r\n\tpublic OddBettingPlayer(String name) {\r\n\t\tsuper(name);\r\n\t}\r\n\r\n\t@Override\r\n\tpublic void update(int n) {\r\n\t\tif(n % 2 == 1) {\r\n\t\t\tSystem.out.println(getName() + \" win!\");\r\n\t\t}\r\n\t}\r\n}\r\n<\/pre>\n
Player\ub97c \uc0c1\uc18d\ubc1b\ub294 EvenBettingPlayer \ud074\ub798\uc2a4\ub294 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n
\r\npackage tstThread;\r\n\r\npublic class EvenBettingPlayer extends Player {\r\n\r\n\tpublic EvenBettingPlayer(String name) {\r\n\t\tsuper(name);\r\n\t}\r\n\r\n\t@Override\r\n\tpublic void update(int n) {\r\n\t\tif(n % 2 == 0) {\r\n\t\t\tSystem.out.println(getName() + \" win!\");\r\n\t\t}\r\n\t}\r\n}\r\n<\/pre>\n
\uc704\uc758 \ud074\ub798\uc2a4\ub97c \uc0ac\uc6a9\ud55c \uc608\uc81c \ucf54\ub4dc\ub294 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n
\r\npackage tstThread;\r\n\r\npublic class Main {\r\n\tpublic static void main(String[] args) {\r\n\t\tDicePlay dicePlay = new DicePlay();\r\n\t\t\r\n\t\tPlayer player1 = new EvenBettingPlayer(\"Jane\");\r\n\t\tPlayer player2 = new OddBettingPlayer(\"Suji\");\r\n\t\t\r\n\t\tdicePlay.addPlayer(player1);\r\n\t\tdicePlay.addPlayer(player2);\r\n\t\t\r\n\t\tfor(int i=0; i<10; i++) {\r\n\t\t\tdicePlay.play();\r\n\t\t\tSystem.out.println();\r\n\t\t}\t\t\r\n\t}\r\n}\r\n<\/pre>\n
\uc2e4\ud589\uacb0\uacfc\ub294 \ub2e4\uc74c\uacfc \uac19\ub2e4.<\/p>\n
\r\nDice Number: 6\r\nJane win!\r\n\r\nDice Number: 1\r\nSuji win!\r\n\r\nDice Number: 5\r\nSuji win!\r\n\r\nDice Number: 6\r\nJane win!\r\n\r\nDice Number: 6\r\nJane win!\r\n\r\nDice Number: 5\r\nSuji win!\r\n\r\nDice Number: 2\r\nJane win!\r\n\r\nDice Number: 5\r\nSuji win!\r\n\r\nDice Number: 3\r\nSuji win!\r\n\r\nDice Number: 2\r\nJane win!\r\n<\/pre>\n
\uc774 \uae00\uc740 \uc18c\ud504\ud2b8\uc6e8\uc5b4 \uc124\uacc4\uc758 \uae30\ubc18\uc774 \ub418\ub294 GoF\uc758 \ub514\uc790\uc778\ud328\ud134\uc5d0 \ub300\ud55c \uac15\uc758\uc790\ub8cc\uc785\ub2c8\ub2e4. \uc644\uc804\ud55c \uc2e4\uc2b5\uc744 \uc704\ud574 \uc774 \uae00\uc5d0\uc11c \uc18c\uac1c\ud558\ub294 \ud074\ub798\uc2a4 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uacfc \uc608\uc81c \ucf54\ub4dc\ub294 \uc644\uc804\ud558\uac8c \uc2e4\ud589\ub418\ub3c4\ub85d \uc81c\uacf5\ub418\uc9c0\ub9cc, \uc0c1\ub300\uc801\uc73c\ub85c \uc608\uc81c \ucf54\ub4dc\uc640 \uad00\ub828\ub41c \uc124\uba85\uc774 \ud568\ucd95\uc801\uc73c\ub85c \uc81c\uacf5\ub418\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uc774 \uae00\uc5d0 \ub300\ud574 \uad81\uae08\ud55c \uc810\uc774 \uc788\uc73c\uba74 \ub313\uae00\uc744 \ud1b5\ud574 \ub0a8\uaca8\uc8fc\uc2dc\uae30 \ubc14\ub78d\ub2c8\ub2e4.<\/div>\n","protected":false},"excerpt":{"rendered":"
\ud328\ud134\uba85\uce6d Observer \ud544\uc694\ud55c \uc0c1\ud669 \uc0c1\ud0dc\uac00 \ubcc0\uacbd\ub418\uba74 \uadf8 \uc0c1\ud0dc \ubcc0\uacbd\uc5d0 \ub530\ub77c \ubc18\uc751\ud558\ub294 \uad6c\uc870\ub97c \uad6c\ud604\ud558\uae30 \uc704\ud55c \ud328\ud134\uc774\ub2e4. \uc608\uc81c \ucf54\ub4dc \uc8fc\uc0ac\uc704 \uac8c\uc784\uc744 \uc608\uc81c\ub85c \ud55c\ub2e4. DicePlay\ub294 \uc8fc\uc0ac\uc704\ub97c \ub358\uc9c0\ub294 \uae30\ub2a5\uc744 \uc2e4\ud589\ud55c\ub2e4. Player\ub294 \uc8fc\uc0ac\uc704 \uac8c\uc784\uc5d0 \ucc38\uc5ec\ud558\ub294 \uc0ac\ub78c\ub4e4\uc774\ub2e4. Player\ub97c \uc0c1\uc18d\ubc1b\ub294 OddBettingPlayer\ub294 \ud640\uc218\uc5d0 \ubc30\ud305\uc744 \uac70\ub294 \uc0ac\ub78c\uc774\uace0, EvenBettingPlayer\ub294 \uc9dd\uc218\uc5d0 \ubc30\ud305\uc744 \uac70\ub294 \uc0ac\ub78c\uc774\ub2e4. \uc8fc\uc0ac\uc704 \uac8c\uc784\uc5d0 \ucc38\uc5ec\ud558\uba74, \uc8fc\uc0ac\uc704\uac00 \ub358\uc838\uc9c8\ub54c \uc790\ub3d9\uc73c\ub85c \uac8c\uc784\uc5d0 \ucc38\uc5ec\ud55c \uc0ac\ub78c\ub4e4\uc758 \uc2b9\ub9ac \uc5ec\ubd80\ub97c \uc989\uc2dc … <\/p>\n
\ub354 \ubcf4\uae30 “[GoF] Observer \ud328\ud134”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[],"class_list":["post-10441","post","type-post","status-publish","format-standard","hentry","category-design"],"_links":{"self":[{"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/10441","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10441"}],"version-history":[{"count":5,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/10441\/revisions"}],"predecessor-version":[{"id":10563,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=\/wp\/v2\/posts\/10441\/revisions\/10563"}],"wp:attachment":[{"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10441"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10441"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.gisdeveloper.co.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10441"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}