{"id":429,"date":"2020-08-29T23:41:46","date_gmt":"2020-08-29T14:41:46","guid":{"rendered":"http:\/\/cedartrees.co.kr\/?p=429"},"modified":"2021-04-03T19:12:35","modified_gmt":"2021-04-03T10:12:35","slug":"oop-characteristics","status":"publish","type":"post","link":"http:\/\/blog.cedartrees.co.kr\/index.php\/2020\/08\/29\/oop-characteristics\/","title":{"rendered":"\uac1d\uccb4\uc9c0\ud5a5 \uc5b8\uc5b4\uc758 \ud2b9\uc9d5"},"content":{"rendered":"\n

\ucea1\uc290\ud654(Encapsulation)<\/strong><\/p>\n\n\n\n

\ubcf4\ud1b5\uc758 \uc0ac\uc6a9\uc790\uac00 \uc2a4\ub9c8\ud2b8\ud3f0\uc744 \uc0ac\uc6a9\ud558\ub294\ub370\ub294 \uc2a4\ub9c8\ud2b8\ud3f0\uc758 \uad6c\uc870\uc640 \uc791\ub3d9\uc6d0\ub9ac\uc5d0 \ub300\ud55c \uc9c0\uc2dd \ubcf4\ub2e4\ub294 \uc0ac\uc6a9\uc5d0 \ud544\uc694\ud55c \uae30\ub2a5\uc774 \ubb34\uc5c7\uc778\uc9c0 \ub610 \uc5b4\ub5a4 \ub54c\uc5d0 \uc5b4\ub5bb\uac8c \uc0ac\uc6a9\ud558\ub294\uc9c0\uc5d0 \ub300\ud574\uc11c\ub9cc \uc54c\uba74 \ub429\ub2c8\ub2e4. \ud130\uce58\ub97c \ud588\uc744 \uacbd\uc6b0\uc5d0 \uc18c\ud504\ud2b8\uc6e8\uc5b4\uac00 \uc5b4\ub5bb\uac8c \ub3d9\uc791\ud558\uace0 \ud558\ub4dc\uc6e8\uc5b4\uac00 \uc5b4\ub5bb\uac8c \ub3d9\uc791\ud558\ub294\uc9c0\uc5d0 \ub300\ud574\uc11c \ubab0\ub77c\ub3c4 \uc0ac\uc6a9\ud558\ub294\ub370\ub294 \uc9c0\uc7a5\uc774 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

\ub9cc\uc57d \uae30\uae30\uac00 \uc804\ubd80 \uc624\ud508\ub418\uc5b4 \uc788\uc5b4\uc11c \uc0ac\uc6a9\uc790\uac00 \uc870\uc791\ud558\uc9c0 \ub9d0\uc544\uc57c \ud560 \ubd80\ubd84\uae4c\uc9c0 \ub9cc\uc9c8 \uc218 \uc788\ub3c4\ub85d \ub418\uc5b4 \uc788\ub2e4\uba74 \uce5c\uc808\ud558\ub2e4\uae30 \ubcf4\ub2e4\ub294 \uc0ac\uc6a9\uc790\uc758 \uc2e4\uc218\ub098 \uae30\uae30\uc758 \uace0\uc7a5\uc758 \uc6d0\uc778\uc774 \ub420 \uac83\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

\ud504\ub85c\uadf8\ub7a8\ub3c4 \ub9c8\ucc2c\uac00\uc9c0\ub85c \uc0ac\uc6a9\uc790\uac00 \ub0b4\ubd80\uc758 \uc8fc\uc694 \uc18c\uc2a4\ucf54\ub4dc\uc5d0 \uc811\uadfc\ud558\ub294 \uac83\uc740 \uc624\ud788\ub824 \uc88b\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \ub9ce\uc740 \ubcc0\uc218\ub4e4\uc774 \ub0b4\ubd80\uc5d0\uc11c \uc0dd\uc131\ub418\uace0 \uc18c\uba78\ub418\ub294\ub370 \uadf8\ub7f0 \ubbfc\uac10\ud55c \ubcc0\uc218\ub4e4\uc744 \uc870\uc791\ud558\ub294 \uac83\uc740 \ud504\ub85c\uadf8\ub7a8 \uc624\ub958\uc758 \uc6d0\uc778\uc774 \ub429\ub2c8\ub2e4.<\/p>\n\n\n\n

\uac1c\ubc1c\uc790\ub294 \uc774\ub7ec\ud55c \uac83\uc744 \ubbf8\uc5f0\uc5d0 \ubc29\uc9c0\ud558\ub3c4\ub85d \uc8fc\uc694 \ub85c\uc9c1\uacfc \ubcc0\uc218\ub4e4\uc744 \uc228\uae30\uace0 \uc624\uc9c1 \uc0ac\uc6a9\uc790\uac00 \ucd5c\uc18c\ud55c\uc758 \ud504\ub85c\uadf8\ub7a8 \ub3d9\uc791\uc5d0 \ud544\uc694\ud55c \uac83\ub4e4\ub9cc \uc811\uadfc\ud558\uace0 \uc0ac\uc6a9\ud560 \uc218 \uc788\ub3c4\ub85d \ud558\ub294 \uac83\uc774 \uc88b\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

\uc774\ub7ec\ud55c \uac83\uc744 \uac1d\uccb4\uc9c0\ud5a5\uc758 \ucea1\uc290\ud654 \ud639\uc740 \uc815\ubcf4\uc740\ub2c9\uc774\ub77c\uace0 \ud45c\ud604\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

\ucd94\uc0c1\ud654(Abstraction)<\/strong><\/p>\n\n\n\n

\ucd94\uc0c1\ud654\ub294 \ubcf5\uc7a1\ud55c \uc790\ub8cc, \ubaa8\ub4c8, \uc2dc\uc2a4\ud15c \ub4f1\uc73c\ub85c\ubd80\ud130 \ud575\uc2ec\uc801\uc778 \uac1c\ub150\uc774\ub098 \uae30\ub2a5\uc744 \uac04\ucd94\ub824 \ub0b4\ub294 \uac83\uc774\ub77c\uace0 \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. <\/p>\n\n\n\n

\uc608\ub97c \ub4e4\uc5b4 \uc5ec\ub7ec \ube0c\ub79c\ub4dc\uc758 \ub2e4\uc591\ud55c \uc790\ub3d9\ucc28\uac00 \uc788\uc2b5\ub2c8\ub2e4. \ubaa8\ub4e0 \uc790\ub3d9\ucc28\ub4e4\uc740 \uadf8 \uc885\ub958\uc5d0 \ub530\ub77c\uc11c \ud06c\uae30, \ubb34\uac8c, \ub113\uc774, \ub192\uc774 \ub4f1\uc758 \ucc28\uc774\uac00 \uc788\uc2b5\ub2c8\ub2e4. \uadf8\ub7ec\ub098 \uc774\ub7ec\ud55c \ucc28\uc774\uc5d0\ub3c4 \ubd88\uad6c\ud558\uace0 \ubaa8\ub4e0 \uc790\ub3d9\ucc28\ub4e4\uc744 \uc798 \uad00\ucc30\ud558\uba74 \uba87\uac00\uc9c0 \uacf5\ud1b5\ub41c \ud2b9\uc9d5\uc744 \ucc3e\uc544 \ub0bc \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

\uc2a4\ud2f0\uc5b4\ub9c1 \ud720, \ubc14\ud034, \uc8fc\ud589\uc7a5\uce58, \uc81c\ub3d9\uc7a5\uce58, \ubb38, \ud5e4\ub4dc\ub77c\uc774\ud2b8 \ub4f1 \uacf5\ud1b5\uc810\uc744 \ucc3e\uc544\ub0b4\uc11c \ud558\ub098\uc758 \uae30\ubcf8 \uac1c\ub150\uc744 \ub9cc\ub4ed\ub2c8\ub2e4. \uc774\ub807\uac8c \ub9cc\ub4e4\uc5b4\uc9c4 \uac1d\uccb4\ub97c \ucd94\uc0c1\ud654\ub41c \uac1d\uccb4\ub77c\uace0 \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ucd94\uc0c1\ud654\ub41c \uac1d\uccb4\ub294 “IS A”\uad00\uacc4\ub85c \ub098\ud0c0\ub0bc \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc989, “\uae30\uc544\uc790\ub3d9\ucc28\uc758 K7\uc740 \uc790\ub3d9\ucc28\uc774\ub2e4”\ub77c\ub294 \uad00\uacc4\ub97c \ub9cc\ub4e4\uc5b4 \ub0bc \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\uc640 \ub9c8\ucc2c\uac00\uc9c0\ub85c “\ud604\ub300\uc790\ub3d9\ucc28\uc758 \uadf8\ub79c\uc800\ub294 \uc790\ub3d9\ucc28\uc774\ub2e4”\ub77c\ub294 \uad00\uacc4\uac00 \ub9fa\uc5b4\uc9d1\ub2c8\ub2e4. \uc774\ub807\uac8c \ud558\uba74 \uc790\ub3d9\ucc28\ub85c\ubd80\ud130 \ucd94\uc0c1\ud654\ub41c \uac1d\uccb4\ub294 “IS A” \uad00\uacc4\uac00 \ub429\ub2c8\ub2e4.
\uadf8\ub7ec\ub098 “\uc790\ub3d9\ucc28\ub294 K7\uc774\ub2e4.” \uad00\uacc4\ub294 \uc880 \uc5b4\uc0c9\ud569\ub2c8\ub2e4. <\/p>\n\n\n\n

\uc774 \uac1c\ub150\uc740 \uac04\ub2e8\ud558\uc9c0\ub9cc \ucd94\uc0c1\ud654\uc758 \ub9e4\uc6b0 \uc911\uc694\ud55c \uac1c\ub150\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

\uac19\uc740 \uac1c\ub150\uc744 \uc774\uc804 \ud504\ub85c\uadf8\ub7a8 \ucf54\ub4dc\ub85c \ubcf8\ub2e4\uba74 \uc0ac\ub78c\uc758 \ubaa8\ub4e0 \ud2b9\uc9d5\uc744 \uc870\ud569\ud558\uc5ec Human\uc774\ub77c\ub294 \ucd94\uc0c1\ud074\ub798\uc2a4\ub97c \ub9cc\ub4e4\uc5c8\ub2e4\uace0 \uc0dd\uac01\ud574 \ubd05\ub2c8\ub2e4. \uadf8\ub9ac\uace0 Man \uc774\ub77c\ub294 \uc778\ud130\ud398\uc774\uc2a4 \ud074\ub798\uc2a4\ub97c \ub9cc\ub4ed\ub2c8\ub2e4. \uc774\uc81c Human + Man = Adam \uc774\ub77c\ub294 \ud074\ub798\uc2a4\ub97c \ub9cc\ub4e4\uc5c8\uc2b5\ub2c8\ub2e4. <\/p>\n\n\n\n

\uc774 Adam\uc774\ub77c\ub294 \uac1d\uccb4\ub97c \ud1b5\ud574\uc11c “David”, “John” \uac1d\uccb4\ub97c \ub9cc\ub4ed\ub2c8\ub2e4.
\uc774\ub807\uac8c \ud558\uba74 David \u2260 John \uc774\uc9c0\ub9cc Human = David, Human = John\uc758 \uad00\uacc4\ub294 \uc131\ub9bd\ud558\uac8c \ub429\ub2c8\ub2e4.<\/p>\n\n\n\n

public class HumanDemo {\n\tpublic static void main(String[] args) {\n\t\tAdam david = new Adam(\"David\", 180, 80);\t\t\n\t\tHuman john = new Adam(\"John\", 178, 75);\n\t\tMan mark = new Adam(\"Mark\", 178, 75);\n\t}\n}<\/pre>\n\n\n\n
\uc774\ub807\uac8c \ucd94\uc0c1\ud654\ud55c \uac1d\uccb4\uc640 \uc774\ub97c \uc0c1\uc18d \ubc1b\uc740 \uac1d\uccb4 \uc0ac\uc774\uc5d0 “IS A”\uc758 \uad00\uacc4\uac00 \uc131\ub9bd\ud55c\ub2e4\ub294 \uac83\uc774 \ucd94\uc0c1\ud654\uc758 \uc911\uc694\ud55c \uac1c\ub150\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n
\uc0c1\uc18d(Inheritance)<\/strong><\/p>\n\n\n\n
\uc0c1\uc18d\uc740 \ucd94\uc0c1\ud654\ub41c \ud074\ub798\uc2a4 \uc989, \uac1d\uccb4\uc758 \uc77c\ubc18\uc801\uc778 \ud2b9\uc131\uc774 \uc815\uc758\ub41c \ud074\ub798\uc2a4\ub97c \uc0ac\uc6a9\ud558\uc5ec \uc0c8\ub85c\uc6b4 \uac1d\uccb4\ub97c \ub9cc\ub4dc\ub294 \uac83\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4. \ub2e8 \ucd94\uc0c1\ud654\ub41c \ud074\ub798\uc2a4\ub294 \ubc18\ub4dc\uc2dc \ucd94\uc0c1\ud074\ub798\uc2a4\ub77c\ub294 \uc758\ubbf8\ub294 \uc544\ub2c8\ub2c8 \ud63c\ub3d9 \uc5c6\uc73c\uc2dc\uae30 \ubc14\ub78d\ub2c8\ub2e4.<\/p>\n\n\n\n
\uc774\ub294 \ubcf4\ud1b5 \ubd80\ubaa8-\uc790\uc2dd \ud074\ub798\uc2a4 \ud639\uc740 \uc0c1\uc704-\ud558\uc704 \ud074\ub798\uc2a4\ub85c\ub3c4 \uc774\ub984\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc55e\uc73c\ub85c\ub294 \uc790\uc2dd \ud074\ub798\uc2a4\ub85c \uc774\ub984\ud558\uaca0\uc2b5\ub2c8\ub2e4. \ubd80\ubaa8 \ud074\ub798\uc2a4\ub294 super\ub97c \ud1b5\ud574\uc11c \uc811\uadfc\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n
\uc790\uc2dd\ud074\ub798\uc2a4\ub294 \ubd80\ubaa8 \ud074\ub798\uc2a4\uc758 \uc18d\uc131\uc744 \ubb3c\ub824 \ubc1b\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ubcc4\ub3c4\ub85c \uc815\uc758\ud558\uc9c0 \uc54a\uc544\ub3c4 \ub418\uc9c0\ub9cc \ud544\uc694\ud558\ub2e4\uba74 \uc815\uc758\ud560 \uc218\ub3c4 \uc788\ub294\ub370 \uc774\uac83\uc744 Overriding\uc774\ub77c\uace0 \ud569\ub2c8\ub2e4. <\/p>\n\n\n\n
\uc774\ub7ec\ud55c \uc0c1\uc18d\uc758 \uac1c\ub150\uc744 \uc774\ud574\ud558\uace0 \uc124\uacc4\uc5d0 \ubc18\uc601\ud558\uba74 \uac1d\uccb4\uc758 \uc7ac\uc0ac\uc6a9\uc774\ub098 \uae30\ub2a5 \ucd94\uac00 \ud639\uc740 \uc720\uc9c0\ubcf4\uc218 \ub4f1\uc5d0 \ud070 \uc7a5\uc810\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n
\uc790\ubc14(JAVA)\uc5d0\uc11c \uc0c1\uc18d\uc740 extends\ub97c \ud1b5\ud574\uc11c \uac00\ub2a5\ud558\uace0 extends\ub97c \ud1b5\ud574\uc11c\ub294 \ub2e8\uc77c \uc0c1\uc18d \ubc16\uc5d0\ub294 \uc9c0\uc6d0\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uadf8\ub7ec\ub098 interface class\uc758 \uacbd\uc6b0 implements\ub97c \ud1b5\ud574\uc11c \ub2e4\uc911 \uc0c1\uc18d\ub3c4 \uac00\ub2a5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\ub2e4\ud615\uc131(Polymorphism)<\/strong><\/p>\n\n\n\n
\uac1d\uccb4\uc9c0\ud5a5\uc758 \ud2b9\uc9d5\uc5d0\uc11c \uac00\uc7a5 \uc774\ud574\ud558\uae30 \uc5b4\ub824\uc6b4 \uac1c\ub150\uc774 \ubc14\ub85c \ub2e4\ud615\uc131 \uac1c\ub150\uc77c \uac83\uc785\ub2c8\ub2e4. \ub2e4\ud615\uc131\uc740 \ub9d0 \uadf8\ub300\ub85c \uc0c1\uc18d \ubc1b\uc740 \uba54\uc11c\ub4dc\uac00 \uc790\uc2dd \ud074\ub798\uc2a4\uc5d0\uc11c \ub2e4\uc591\ud55c \ubc29\uc2dd\uc73c\ub85c \uac1c\ubc1c \ud560 \uc218 \uc788\ub3c4\ub85d \ud5c8\uc6a9\ud558\ub294 \uac83\uc774\ub2e4. \uc774 \ub2e4\ud615\uc131\uc774 \uc0c1\uc18d\uacfc \uc5f0\uacc4\ub418\uc5b4\uc11c \uc790\ubc14\uc758 \ub192\uc740 \uc5b8\uc5b4\uc801\uc778 \ud6a8\uc728\uc131\uc774 \ubc1c\ud718\ub41c\ub2e4\uace0 \ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n
\uc774 \ub2e4\ud615\uc131\uc744 \uc798 \uc774\ud574\ud558\uace0 \uc124\uacc4\ud558\uba74 \ucf54\ub4dc\ub3c4 \uac04\uacb0\ud574\uc9c8 \ubfd0\ub354\ub7ec \ubcc0\ud654\uc5d0\ub3c4 \uc720\uc5f0\ud558\uac8c \ub300\ucc98\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n
\uc544\ub798\uc758 \ucf54\ub4dc\ub294 \uc77c\ubc18\uc801\uc778 \ud615\ud0dc\uc758 \ucf54\ub4dc\uc785\ub2c8\ub2e4. \ud55c\uad6d\uc778, \uc911\uad6d\uc778, \uc601\uad6d\uc778 \uac1d\uccb4\ub97c \uc120\uc5b8\ud558\uace0 \uac01\uac01 \ubaa8\uad6d\uc5b4\ub97c \ub9d0\ud558\ub294 \ud074\ub798\uc2a4\uc785\ub2c8\ub2e4. \uc774 \uc138 \uac1d\uccb4\ub294 “\ub9d0\ud55c\ub2e4”\ub77c\ub294 \ud558\ub098\uc758 \uae30\ub2a5\uc744 \uc218\ud589\ud558\ub294 \uba54\uc18c\ub4dc\ub97c \uac00\uc9c0\uace0 \uc788\uc9c0\ub9cc \uac01\uae30 \ub2e4\ub978 \uc774\ub984\uc73c\ub85c \uad6c\ud604\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4. <\/p>\n\n\n\n
package ch01;\n\npublic class SpeakDemo {\n\tpublic static void main(String[] args) {\n\t\tKorean k = new Korean();\n\t\tChinese c = new Chinese();\n\t\tBriton b = new Briton();\n\t\t\n\t\tk.speakKorean();\n\t\tc.speakChinese();\n\t\tb.speakEnglish();\n\t}\n}\n\nclass Korean {\n\tpublic void speakKorean() {\n\t\tSystem.out.println(\"\ud55c\uad6d\uc5b4\");\n\t}\n}\n\nclass Chinese {\n\tpublic void speakChinese() {\n\t\tSystem.out.println(\"\uc911\uad6d\uc5b4\");\n\t}\n}\n\nclass Briton{\n\tpublic void speakEnglish() {\n\t\tSystem.out.println(\"\uc601\uc5b4\");\n\t}\n}<\/pre>\n\n\n\n
\uc774\uc81c \uc704\uc758 \ucf54\ub4dc\uc5d0\uc11c Korean, Chinese, Brion \ud074\ub798\uc2a4\uc5d0\uc11c \uacf5\ud1b5\uc801\uc778 \uc694\uc18c\ub97c \ucd94\ucd9c\ud558\uc5ec \ucd94\uc0c1\ud074\ub798\uc2a4\ub97c \ub9cc\ub4e4\uace0 \uc774 \uc138 \uc5b8\uc5b4\uc758 \uacf5\ud1b5\uc801\uc778 \uae30\ub2a5\uc778 “speak()” \uba54\uc18c\ub4dc\ub97c \uc815\uc758\ud558\uaca0\uc2b5\ub2c8\ub2e4. \uc774 \ucd94\uc0c1\ud074\ub798\uc2a4\ub97c \uacf5\ud1b5\uc73c\ub85c \uc0c1\uc18d \ubc1b\ub294 \uac1d\uccb4\ub4e4\uc740 \ubc18\ub4dc\uc2dc  speak() \uba54\uc18c\ub4dc\ub97c \uad6c\ud604\ud574\uc57c \ud569\ub2c8\ub2e4. 
\uadf8\ub7ec\ub098 \uc774 speak() \uba54\uc18c\ub4dc\ub97c \uc0c1\uc18d \ubc1b\uc740 \ud074\ub798\uc2a4\ub294 \uac01\uc790\uc758 \uc0c1\ud669\uc5d0 \ub9de\ucdb0\uc11c \ud574\ub2f9 \uba54\uc18c\ub4dc\ub97c \ub2e4\ub974\uac8c \uad6c\ud604\ud569\ub2c8\ub2e4. \ucd94\uc0c1\ud074\ub798\uc2a4\uc5d0\uc11c\ub294 \uc815\uc758\ub9cc \ud558\uace0 \uc774\ub97c \uc0c1\uc18d\ud558\ub294 \ud074\ub798\uc2a4\uc5d0\uc11c \uac01\uae30 \ub2e4\ub978 \ubc29\uc2dd\uc73c\ub85c \ub0b4\uc6a9\uc744 \uad6c\uc131\ud558\ub294 \uac83\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n
package ch01;\n\npublic class SpeakDemo2 {\n\tpublic static void main(String[] args) {\n\t\tLanguage ko = new Korean();\n\t\tLanguage ch = new Chinese();\n\t\tLanguage br = new Briton();\n\t\t\n\t\tko.speak(); ch.speak(); br.speak();\n\t}\n}\n\nabstract class Language {\n\tpublic abstract void speak();\n}\n\nclass Korean extends Language {\n\t@Override\n\tpublic void speak() {\n\t\tSystem.out.println(\"\ud55c\uad6d\uc5b4\");\n\t}\n}\n\nclass Chinese extends Language {\n\t@Override\n\tpublic void speak() {\n\t\tSystem.out.println(\"\uc911\uad6d\uc5b4\");\n\t}\n}\n\nclass Briton extends Language { \n\t@Override\n\tpublic void speak() {\n\t\tSystem.out.println(\"\uc601\uc5b4\");\n\t}\n}\n<\/pre>\n\n\n\n
\uc704\uc640 \uac19\uc740 \ubc29\uc2dd\uc73c\ub85c \ucf54\ub529\ud558\uba74 \uc138 \uac1d\uccb4\uac04\uc758 \uad00\uacc4\uac00 \uba85\ub8cc\ud574\uc9c0\uace0 \ub610 \ub2e4\ub978 \uc5b8\uc5b4\uac00 \uc0dd\uc131 \ub420 \ub54c\uc5d0 \uc0c1\uc18d\uc744 \ubc1b\uace0 speak() \ubd80\ubd84\ub9cc \uad6c\ud604\ud558\uba74 \ub418\uae30 \ub54c\ubb38\uc5d0 \ucf54\ub4dc\uac00 \uac04\uacb0\ud574\uc9c0\uace0 \uc7ac\ud65c\uc6a9\uc774 \uac00\ub2a5\ud574\uc9d1\ub2c8\ub2e4. \uadf8\ub9ac\uace0 \ubd80\ubaa8 \uac1d\uccb4\uc758 \uba54\uc18c\ub4dc\ub97c \uc790\uc2dd\uc5d0\uc11c \uad6c\ud604\ud560 \ub54c\uc5d0 \uba85\uc2dc\uc801\uc73c\ub85c @Override\ub97c \uc5b4\ub178\ud14c\uc774\uc158\uc744 \ud45c\uae30\ud574\uc8fc\uba74 \ub354\uc6b1 \uba85\uc2dc\uc801\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n
\ube44\uc2b7\ud55c \uac1c\ub150\uc73c\ub85c @Overload\uac00 \uc788\uc2b5\ub2c8\ub2e4. 
\ud574\ub2f9 \uac1c\ub150\uc740 \ud558\ub098\uc758 \uba54\uc18c\ub4dc \uc774\ub984\uc744 \uac01\uae30 \ub2e4\ub978 \ub9e4\uac1c \ubcc0\uc218\ub97c \uc0ac\uc6a9\ud574\uc11c \ud638\ucd9c\ud558\ub294 \uac83\uc73c\ub85c \uac00\uc7a5 \ub9ce\uc774 \uc4f0\ub294 \uc608\ub85c\ub294 System.out.print() \ud568\uc218\uac00 \uc788\uc2b5\ub2c8\ub2e4. \ud574\ub2f9 \ud568\uc218\ub294 String, boolean, long, int \ub4f1 \ub9e4\uac1c\ubcc0\uc218\ub97c \ub2e4\ub974\uac8c \ud574\ub3c4 \ubaa8\ub450 \ub3d9\uc77c\ud55c print()\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n
\uadf8\ub7ec\ubbc0\ub85c \uc624\ubc84\ub85c\ub529\uc758 \uc870\uac74\uc740 \uba54\uc11c\ub4dc\uc758 \uc774\ub984\uc774 \uac19\uace0, \ub9e4\uac1c \ubcc0\uc218\uc758 \ud0c0\uc785\uc774 \ud2c0\ub824\uc57c \ud569\ub2c8\ub2e4. \ub9cc\uc57d Overload\uac00 \ub418\uc9c0 \uc54a\uc558\ub2e4\uba74 \uc544\ub9c8\ub3c4 \uc790\ubc14\ub294 \ube44\uc2b7\ud55c \uc774\ub984\uc758 \uc9c0\uae08 \ubcf4\ub2e4 \ud6e8\uc52c \ub354 \ub9ce\uc740 \uba54\uc18c\ub4dc\ub97c \ubcf4\uc720\ud558\uba74\uc11c \uac1c\ubc1c\uc790\ub97c \ud798\ub4e4\uac8c \ub9cc\ub4e4\uc5c8\uc744 \uc218\ub3c4 \uc788\uc744 \uac83\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
\ucea1\uc290\ud654(Encapsulation) \ubcf4\ud1b5\uc758 \uc0ac\uc6a9\uc790\uac00 \uc2a4\ub9c8\ud2b8\ud3f0\uc744 \uc0ac\uc6a9\ud558\ub294\ub370\ub294 \uc2a4\ub9c8\ud2b8\ud3f0\uc758 \uad6c\uc870\uc640 \uc791\ub3d9\uc6d0\ub9ac\uc5d0 \ub300\ud55c \uc9c0\uc2dd \ubcf4\ub2e4\ub294 \uc0ac\uc6a9\uc5d0 \ud544\uc694\ud55c \uae30\ub2a5\uc774 \ubb34\uc5c7\uc778\uc9c0 \ub610 \uc5b4\ub5a4 \ub54c\uc5d0 \uc5b4\ub5bb\uac8c \uc0ac\uc6a9\ud558\ub294\uc9c0\uc5d0 \ub300\ud574\uc11c\ub9cc \uc54c\uba74 \ub429\ub2c8\ub2e4. \ud130\uce58\ub97c \ud588\uc744 \uacbd\uc6b0\uc5d0 \uc18c\ud504\ud2b8\uc6e8\uc5b4\uac00 \uc5b4\ub5bb\uac8c \ub3d9\uc791\ud558\uace0 \ud558\ub4dc\uc6e8\uc5b4\uac00 \uc5b4\ub5bb\uac8c \ub3d9\uc791\ud558\ub294\uc9c0\uc5d0 \ub300\ud574\uc11c \ubab0\ub77c\ub3c4 \uc0ac\uc6a9\ud558\ub294\ub370\ub294 \uc9c0\uc7a5\uc774 \uc5c6\uc2b5\ub2c8\ub2e4. \ub9cc\uc57d \uae30\uae30\uac00 \uc804\ubd80 \uc624\ud508\ub418\uc5b4 \uc788\uc5b4\uc11c \uc0ac\uc6a9\uc790\uac00 \uc870\uc791\ud558\uc9c0 \ub9d0\uc544\uc57c \ud560 \ubd80\ubd84\uae4c\uc9c0 \ub9cc\uc9c8 \uc218 \uc788\ub3c4\ub85d \ub418\uc5b4 \uc788\ub2e4\uba74 \uce5c\uc808\ud558\ub2e4\uae30 \ubcf4\ub2e4\ub294 \uc0ac\uc6a9\uc790\uc758 … <\/p>\n
\ub354 \ubcf4\uae30 “\uac1d\uccb4\uc9c0\ud5a5 \uc5b8\uc5b4\uc758 \ud2b9\uc9d5”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[29],"tags":[112,111,116,94,115],"_links":{"self":[{"href":"http:\/\/blog.cedartrees.co.kr\/index.php\/wp-json\/wp\/v2\/posts\/429"}],"collection":[{"href":"http:\/\/blog.cedartrees.co.kr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.cedartrees.co.kr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.cedartrees.co.kr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.cedartrees.co.kr\/index.php\/wp-json\/wp\/v2\/comments?post=429"}],"version-history":[{"count":11,"href":"http:\/\/blog.cedartrees.co.kr\/index.php\/wp-json\/wp\/v2\/posts\/429\/revisions"}],"predecessor-version":[{"id":447,"href":"http:\/\/blog.cedartrees.co.kr\/index.php\/wp-json\/wp\/v2\/posts\/429\/revisions\/447"}],"wp:attachment":[{"href":"http:\/\/blog.cedartrees.co.kr\/index.php\/wp-json\/wp\/v2\/media?parent=429"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.cedartrees.co.kr\/index.php\/wp-json\/wp\/v2\/categories?post=429"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.cedartrees.co.kr\/index.php\/wp-json\/wp\/v2\/tags?post=429"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}