{"id":28,"date":"2019-05-10T10:16:00","date_gmt":"2019-05-10T01:16:00","guid":{"rendered":"http:\/\/2019se3.satoshis.jp\/?p=28"},"modified":"2019-05-10T13:02:08","modified_gmt":"2019-05-10T04:02:08","slug":"5%e6%9c%8810%e6%97%a5","status":"publish","type":"post","link":"https:\/\/2019se3.satoshis.jp\/?p=28","title":{"rendered":"5\u670810\u65e5"},"content":{"rendered":"

\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306e\u7df4\u7fd2\u3068\u3057\u3066\u3001\u97f3\u697d\u30d7\u30ec\u30fc\u30e4\u30fc\u307f\u305f\u3044\u306a\u30a2\u30d7\u30ea\u3092\u4f5c\u3063\u3066\u307f\u308b\u3002<\/p>\n

\u30a2\u30d7\u30ea\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306b\u3001\u65b0\u898fJava\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u300cmusicplayer\u300d\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u3002<\/p>\n

\u65b0\u898f\u30af\u30e9\u30b9\u3067\u300cMusicPlayer\u300d\u3092\u4f5c\u6210\u3059\u308b\u3002
\n\u3053\u306e\u3068\u304d\u3001\u30d1\u30c3\u30b1\u30fc\u30b8\u540d\u306f\u300cjp.abc\u300d\u3068\u3059\u308b\u3002
\n\u4e00\u822c\u7684\u306b\u30d1\u30c3\u30b1\u30fc\u30b8\u540d\u3092\u6c7a\u3081\u308b\u5834\u5408\u306f\u3001\u4f01\u696d\u3084\u30a2\u30d7\u30ea\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u53cd\u8ee2\u3057\u305f\u3082\u306e\u3092\u4f7f\u7528\u3059\u308b\u3002
\n\u305d\u3046\u3057\u3066\u304a\u3051\u3070\u3001\u4e16\u754c\u7684\u306b\u91cd\u8907\u3059\u308b\u5fc3\u914d\u304c\u306a\u3044\u306e\u3067\u3002<\/p>\n

\u4f8b\uff1a
\ntwitter.com \u2192 com.twitter.Hoge
\ngmail.google.com \u2192 com.google.gmail<\/p>\n

\r\npackage jp.abc;\r\n\r\npublic class MusicPlayer {\r\n\r\n}\r\n<\/pre>\n
\u30c6\u30b9\u30c8\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3059\u308b\u3002
\n[\u65b0\u898f]-[\u305d\u306e\u4ed6] \u304b\u3089\u300cJUnit\u30c6\u30b9\u30c8\u30b1\u30fc\u30b9\u300d\u3092\u9078\u629e\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\nimport org.junit.jupiter.api.Test;\r\n\r\nclass MusicPlayerTest {\r\n\r\n\t@Test\r\n\tvoid \u97f3\u697d\u3092\u8ffd\u52a0\u3059\u308b() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addMusic("Lemon", "\u7c73\u6d25\u7384\u5e2b");\r\n\t}\r\n\r\n}\r\n<\/pre>\n
addMusic()\u4e0a\u306b\u30de\u30a6\u30b9\u30ab\u30fc\u30bd\u30eb\u3092\u3082\u3063\u3066\u3044\u304d\u3001\u300caddMusic(String, String)\u3092\u4f5c\u6210\u3059\u308b\u300d\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u3001
\nMusicPlayer\u306b\u30e1\u30bd\u30c3\u30c9\u304c\u8ffd\u52a0\u3055\u308c\u308b\u3002
\n\u5f15\u6570\u540d\u304c\u4e0d\u9069\u5207\u306a\u306e\u3067\u3001\u4fee\u6b63\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\npublic class MusicPlayer {\r\n\r\n\tpublic void addMusic(String title, String artist) {\r\n\r\n\t}\r\n\r\n}\r\n<\/pre>\n
\u97f3\u697d\u3092\u8ffd\u52a0\u3057\u305f\u5f8c\u306e\u52d5\u4f5c\u3092\u8003\u3048\u308b\u3002
\n\u3068\u308a\u3042\u3048\u305a\u3001\u97f3\u697d\u306e\u6570\u3092\u8abf\u3079\u305f\u3044\u306e\u3067\u3001\u30c6\u30b9\u30c8\u30b1\u30fc\u30b9\u306b\u30e1\u30bd\u30c3\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\nimport org.junit.jupiter.api.Test;\r\n\r\nclass MusicPlayerTest {\r\n\r\n\t@Test\r\n\tvoid \u97f3\u697d\u3092\u8ffd\u52a0\u3059\u308b() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addMusic("Lemon", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tint n = mp.countMusic();\r\n\t}\r\n\r\n}\r\n<\/pre>\n
countMusic()\u304c\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u306a\u306e\u3067\u3001\u30de\u30a6\u30b9\u30ab\u30fc\u30bd\u30eb\u3092\u305d\u306e\u4e0a\u306b\u79fb\u52d5\u3057\u3001\u300ccountMusic()\u3092\u4f5c\u6210\u3059\u308b\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u3001\u30e1\u30bd\u30c3\u30c9\u3092\u4f5c\u6210\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\npublic class MusicPlayer {\r\n\r\n\tpublic void addMusic(String title, String artist) {\r\n\r\n\t}\r\n\r\n\tpublic int countMusic() {\r\n\t\treturn 0;\r\n\t}\r\n\r\n}\r\n<\/pre>\n
\u30c6\u30b9\u30c8\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\nimport static org.hamcrest.CoreMatchers.*;\r\nimport static org.junit.Assert.*;\r\n\r\nimport org.junit.jupiter.api.Test;\r\n\r\nclass MusicPlayerTest {\r\n\r\n\t@Test\r\n\tvoid \u97f3\u697d\u3092\u8ffd\u52a0\u3059\u308b() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addMusic("Lemon", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tint n = mp.countMusic();\r\n\t\tassertThat(n, is(1));\r\n\t\tmp.addMusic("flamingo", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tn = mp.countMusic();\r\n\t\tassertThat(n, is(2));\r\n\t}\r\n\r\n}\r\n<\/pre>\n
\u30c6\u30b9\u30c8\u3092\u5b9f\u884c\u3059\u308b\u3068\u30a8\u30e9\u30fc\u306b\u306a\u308b\u306e\u3067\u3001MusicPlayer\u3092\u305d\u308c\u306a\u308a\u306b\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u6027\u304c\u767a\u751f\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\nimport java.util.ArrayList;\r\nimport java.util.List;\r\n\r\npublic class MusicPlayer {\r\n\tprivate List<Music> musics = new ArrayList<>();\r\n\r\n\tpublic void addMusic(String title, String artist) {\r\n\t\tMusic m = new Music();\r\n\t\tmusics.add(m);\r\n\t}\r\n\r\n\tpublic int countMusic() {\r\n\t\treturn musics.size();\r\n\t}\r\n\r\n}\r\n<\/pre>\n
\u30c6\u30b9\u30c8\u3092\u30d1\u30b9\u3067\u304d\u305f\u306e\u3067\u3001\u65b0\u3057\u3044\u6a5f\u80fd\u3092\u8ffd\u52a0\u3059\u308b\u3002
\n\u305d\u306e\u305f\u3081\u306b\u3001\u30c6\u30b9\u30c8\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\nimport static org.hamcrest.CoreMatchers.*;\r\nimport static org.junit.Assert.*;\r\n\r\nimport org.junit.jupiter.api.Test;\r\n\r\nclass MusicPlayerTest {\r\n\r\n\t@Test\r\n\tvoid \u97f3\u697d\u3092\u8ffd\u52a0\u3059\u308b() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addMusic("Lemon", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tint n = mp.countMusic();\r\n\t\tassertThat(n, is(1));\r\n\t\tmp.addMusic("flamingo", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tn = mp.countMusic();\r\n\t\tassertThat(n, is(2));\r\n\t}\r\n\r\n\t@Test\r\n\tvoid \u30bf\u30a4\u30c8\u30eb\u3068\u30a2\u30fc\u30c6\u30a3\u30b9\u30c8\u306e\u78ba\u8a8d() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addMusic("Lemon", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tMusic m = mp.getMusic(0);\r\n\t}\r\n}\r\n<\/pre>\n
getMusic()\u3067\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u306b\u306a\u3063\u3066\u3044\u308b\u306e\u3067\u3001\u30de\u30a6\u30b9\u30ab\u30fc\u30bd\u30eb\u3092\u4e0a\u306b\u6301\u3063\u3066\u3044\u304d\u300cgetMusic()\u3092\u4f5c\u6210\u3059\u308b\u300d\u3092\u30af\u30ea\u30c3\u30af\u3057\u3001\u30e1\u30bd\u30c3\u30c9\u3092\u4f5c\u6210\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\nimport java.util.ArrayList;\r\nimport java.util.List;\r\n\r\npublic class MusicPlayer {\r\n\tprivate List<Music> musics = new ArrayList<>();\r\n\r\n\tpublic void addMusic(String title, String artist) {\r\n\t\tMusic m = new Music();\r\n\t\tmusics.add(m);\r\n\t}\r\n\r\n\tpublic int countMusic() {\r\n\t\treturn musics.size();\r\n\t}\r\n\r\n\tpublic Music getMusic(int i) {\r\n\t\t\/\/ TODO \u81ea\u52d5\u751f\u6210\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u30fb\u30b9\u30bf\u30d6\r\n\t\treturn null;\r\n\t}\r\n\r\n}\r\n<\/pre>\n
\u30c6\u30b9\u30c8\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\nimport static org.hamcrest.CoreMatchers.*;\r\nimport static org.junit.Assert.*;\r\n\r\nimport org.junit.jupiter.api.Test;\r\n\r\nclass MusicPlayerTest {\r\n\r\n\t@Test\r\n\tvoid \u97f3\u697d\u3092\u8ffd\u52a0\u3059\u308b() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addMusic("Lemon", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tint n = mp.countMusic();\r\n\t\tassertThat(n, is(1));\r\n\t\tmp.addMusic("flamingo", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tn = mp.countMusic();\r\n\t\tassertThat(n, is(2));\r\n\t}\r\n\r\n\t@Test\r\n\tvoid \u30bf\u30a4\u30c8\u30eb\u3068\u30a2\u30fc\u30c6\u30a3\u30b9\u30c8\u306e\u78ba\u8a8d() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addMusic("Lemon", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tMusic m = mp.getMusic(0);\r\n\t\tassertNotNull(m);\r\n\t}\r\n}\r\n<\/pre>\n
\u30c6\u30b9\u30c8\u304c\u30a8\u30e9\u30fc\u306b\u306a\u308b\u306e\u3067\u3001\u30c6\u30b9\u30c8\u306b\u30d1\u30b9\u3059\u308b\u3088\u3046\u306bMusicPlayer\u3092\u5909\u66f4\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\nimport java.util.ArrayList;\r\nimport java.util.List;\r\n\r\npublic class MusicPlayer {\r\n\tprivate List<Music> musics = new ArrayList<>();\r\n\r\n\tpublic void addMusic(String title, String artist) {\r\n\t\tMusic m = new Music();\r\n\t\tmusics.add(m);\r\n\t}\r\n\r\n\tpublic int countMusic() {\r\n\t\treturn musics.size();\r\n\t}\r\n\r\n\tpublic Music getMusic(int i) {\r\n\t\treturn new Music();\r\n\t}\r\n\r\n}\r\n<\/pre>\n
\u30c6\u30b9\u30c8\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\nimport static org.hamcrest.CoreMatchers.*;\r\nimport static org.junit.Assert.*;\r\n\r\nimport org.junit.jupiter.api.Test;\r\n\r\nclass MusicPlayerTest {\r\n\r\n\t@Test\r\n\tvoid \u97f3\u697d\u3092\u8ffd\u52a0\u3059\u308b() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addMusic("Lemon", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tint n = mp.countMusic();\r\n\t\tassertThat(n, is(1));\r\n\t\tmp.addMusic("flamingo", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tn = mp.countMusic();\r\n\t\tassertThat(n, is(2));\r\n\t}\r\n\r\n\t@Test\r\n\tvoid \u30bf\u30a4\u30c8\u30eb\u3068\u30a2\u30fc\u30c6\u30a3\u30b9\u30c8\u306e\u78ba\u8a8d() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addMusic("Lemon", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tMusic m = mp.getMusic(0);\r\n\t\tassertNotNull(m);\r\n\t\tassertThat(m.getTitle(), is("Lemon"));\r\n\t}\r\n}\r\n<\/pre>\n
getTitle()\u306e\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u3092\u89e3\u6d88\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\npublic class Music {\r\n\r\n\tpublic String getTitle() {\r\n\t\t\/\/ TODO \u81ea\u52d5\u751f\u6210\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u30fb\u30b9\u30bf\u30d6\r\n\t\treturn null;\r\n\t}\r\n\r\n}\r\n<\/pre>\n
\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u304c\u89e3\u6d88\u3057\u305f\u3051\u3069\u30c6\u30b9\u30c8\u306f\u30a8\u30e9\u30fc\u306a\u306e\u3067\u3001\u30c6\u30b9\u30c8\u306b\u30d1\u30b9\u3059\u308b\u3088\u3046\u306b\u3001\u623b\u308a\u5024\u3067”Lemon”\u3092\u8fd4\u3059\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\npublic class Music {\r\n\r\n\tpublic String getTitle() {\r\n\t\treturn "Lemon";\r\n\t}\r\n\r\n}\r\n<\/pre>\n
\u3055\u3089\u306b\u30c6\u30b9\u30c8\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\nimport static org.hamcrest.CoreMatchers.*;\r\nimport static org.junit.Assert.*;\r\n\r\nimport org.junit.jupiter.api.Test;\r\n\r\nclass MusicPlayerTest {\r\n\r\n\t@Test\r\n\tvoid \u97f3\u697d\u3092\u8ffd\u52a0\u3059\u308b() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addMusic("Lemon", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tint n = mp.countMusic();\r\n\t\tassertThat(n, is(1));\r\n\t\tmp.addMusic("flamingo", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tn = mp.countMusic();\r\n\t\tassertThat(n, is(2));\r\n\t}\r\n\r\n\t@Test\r\n\tvoid \u30bf\u30a4\u30c8\u30eb\u3068\u30a2\u30fc\u30c6\u30a3\u30b9\u30c8\u306e\u78ba\u8a8d() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addMusic("Lemon", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tMusic m = mp.getMusic(0);\r\n\t\tassertNotNull(m);\r\n\t\tassertThat(m.getTitle(), is("Lemon"));\r\n\t\tmp.addMusic("flamingo", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tm = mp.getMusic(1);\r\n\t\tassertNotNull(m);\r\n\t\tassertThat(m.getTitle(), is("flamingo"));\r\n\t}\r\n}\r\n<\/pre>\n
\u304d\u3061\u3093\u3068\u5b9f\u88c5\u3057\u306a\u3044\u3068\u30c6\u30b9\u30c8\u306b\u30d1\u30b9\u3057\u306a\u3044\u3063\u307d\u3044\u3002\u3002\u3002
\nMusic\u30af\u30e9\u30b9\u306b\u30bf\u30a4\u30c8\u30eb\u3068\u30a2\u30fc\u30c6\u30a3\u30b9\u30c8\u3092\u4fdd\u5b58\u3067\u304d\u308b\u3088\u3046\u3001\u6700\u5c0f\u9650\u306e\u5b9f\u88c5\u3092\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\npublic class Music {\r\n\tprivate String title;\r\n\tprivate String artist;\r\n\r\n\tpublic String getTitle() {\r\n\t\treturn title;\r\n\t}\r\n\r\n\tpublic void setTitle(String title) {\r\n\t\tthis.title = title;\r\n\t}\r\n\r\n\tpublic String getArtist() {\r\n\t\treturn artist;\r\n\t}\r\n\r\n\tpublic void setArtist(String artist) {\r\n\t\tthis.artist = artist;\r\n\t}\r\n\r\n}\r\n<\/pre>\n
MusicPlayer\u3082\u3001addMusic()\u3068getMusoic()\u3092\u304d\u3061\u3093\u3068\u5b9f\u88c5\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\nimport java.util.ArrayList;\r\nimport java.util.List;\r\n\r\npublic class MusicPlayer {\r\n\tprivate List<Music> musics = new ArrayList<>();\r\n\r\n\tpublic void addMusic(String title, String artist) {\r\n\t\tMusic m = new Music();\r\n\t\tm.setTitle(title);\r\n\t\tm.setArtist(artist);\r\n\t\tmusics.add(m);\r\n\t}\r\n\r\n\tpublic int countMusic() {\r\n\t\treturn musics.size();\r\n\t}\r\n\r\n\tpublic Music getMusic(int i) {\r\n\t\treturn musics.get(i);\r\n\t}\r\n\r\n}\r\n<\/pre>\n
\u3053\u308c\u3067\u30c6\u30b9\u30c8\u306b\u30d1\u30b9\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u305f\uff01<\/p>\n
\u97f3\u697d\u30d7\u30ec\u30fc\u30e4\u30fc\u306b\u30d7\u30ec\u30a4\u30ea\u30b9\u30c8\u3092\u8ffd\u52a0\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3002
\n\u30c6\u30b9\u30c8\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\nimport static org.hamcrest.CoreMatchers.*;\r\nimport static org.junit.Assert.*;\r\n\r\nimport org.junit.jupiter.api.Test;\r\n\r\nclass MusicPlayerTest {\r\n\r\n\t@Test\r\n\tvoid \u97f3\u697d\u3092\u8ffd\u52a0\u3059\u308b() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addMusic("Lemon", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tint n = mp.countMusic();\r\n\t\tassertThat(n, is(1));\r\n\t\tmp.addMusic("flamingo", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tn = mp.countMusic();\r\n\t\tassertThat(n, is(2));\r\n\t}\r\n\r\n\t@Test\r\n\tvoid \u30bf\u30a4\u30c8\u30eb\u3068\u30a2\u30fc\u30c6\u30a3\u30b9\u30c8\u306e\u78ba\u8a8d() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addMusic("Lemon", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tMusic m = mp.getMusic(0);\r\n\t\tassertNotNull(m);\r\n\t\tassertThat(m.getTitle(), is("Lemon"));\r\n\t\tmp.addMusic("flamingo", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tm = mp.getMusic(1);\r\n\t\tassertNotNull(m);\r\n\t\tassertThat(m.getTitle(), is("flamingo"));\r\n\t}\r\n\t\r\n\t@Test\r\n\tvoid \u30d7\u30ec\u30a4\u30ea\u30b9\u30c8\u3092\u4f5c\u308b() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addPlayList("\u304a\u6c17\u306b\u5165\u308a");\r\n\t}\r\n}\r\n<\/pre>\n
MusicPlayer\u306baddPlayList()\u3092\u8ffd\u52a0\u3057\u3066\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u3092\u89e3\u6d88\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\nimport java.util.ArrayList;\r\nimport java.util.List;\r\n\r\npublic class MusicPlayer {\r\n\tprivate List<Music> musics = new ArrayList<>();\r\n\r\n\tpublic void addMusic(String title, String artist) {\r\n\t\tMusic m = new Music();\r\n\t\tm.setTitle(title);\r\n\t\tm.setArtist(artist);\r\n\t\tmusics.add(m);\r\n\t}\r\n\r\n\tpublic int countMusic() {\r\n\t\treturn musics.size();\r\n\t}\r\n\r\n\tpublic Music getMusic(int i) {\r\n\t\treturn musics.get(i);\r\n\t}\r\n\r\n\tpublic void addPlayList(String name) {\r\n\r\n\t}\r\n\r\n}\r\n<\/pre>\n
\u30c6\u30b9\u30c8\u3092\u8ffd\u52a0\u3059\u308b\u3002
\nMusic\u3068\u540c\u69d8\u306b\u3001\u30d7\u30ec\u30a4\u30ea\u30b9\u30c8\u306e\u6570\u3092\u8fd4\u3059\u6a5f\u80fd\u3092\u8ffd\u52a0\u3057\u3066\u307f\u308b\u3002<\/p>\n
\r\n\t@Test\r\n\tvoid \u30d7\u30ec\u30a4\u30ea\u30b9\u30c8\u3092\u4f5c\u308b() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addPlayList("\u304a\u6c17\u306b\u5165\u308a");\r\n\t\tint n = mp.countPlayList();\r\n\t\tassertThat(n, is(1));\r\n\t}\r\n<\/pre>\n
countPlayList()\u3092\u4f5c\u6210\u3057\u3066\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u3092\u89e3\u6d88\u3059\u308b\u3002
\n\u300creturn 1;\u300d\u3067\u30c6\u30b9\u30c8\u306b\u30d1\u30b9\u3059\u308b\u3002<\/p>\n
\r\n\tpublic int countPlayList() {\r\n\t\treturn 1;\r\n\t}\r\n<\/pre>\n
\u3055\u3089\u306b\u30d7\u30ec\u30a4\u30ea\u30b9\u30c8\u3092\u8ffd\u52a0\u3059\u308b\u3002
\n\u30c6\u30b9\u30c8\u304c\u30a8\u30e9\u30fc\u306b\u306a\u308b\u306e\u3067\u3001\u30d1\u30b9\u3059\u308b\u3088\u3046\u306bMusicPlayer\u3092\u5b9f\u88c5\u3059\u308b\u3002<\/p>\n
\r\n\t@Test\r\n\tvoid \u30d7\u30ec\u30a4\u30ea\u30b9\u30c8\u3092\u4f5c\u308b() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addPlayList("\u304a\u6c17\u306b\u5165\u308a");\r\n\t\tint n = mp.countPlayList();\r\n\t\tassertThat(n, is(1));\r\n\t\tmp.addPlayList("\u30d0\u30e9\u30fc\u30c9\u96c6");\r\n\t\tn = mp.countPlayList();\r\n\t\tassertThat(n, is(2));\r\n\t}\r\n<\/pre>\n
addMusic()\u3068countMusic()\u3092\u53c2\u8003\u306b\u3057\u3066\u5b9f\u88c5\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\nimport java.util.ArrayList;\r\nimport java.util.List;\r\n\r\npublic class MusicPlayer {\r\n\tprivate List<Music> musics = new ArrayList<>();\r\n\tprivate List<PlayList> playLists = new ArrayList<>();\r\n\r\n\tpublic void addMusic(String title, String artist) {\r\n\t\tMusic m = new Music();\r\n\t\tm.setTitle(title);\r\n\t\tm.setArtist(artist);\r\n\t\tmusics.add(m);\r\n\t}\r\n\r\n\tpublic int countMusic() {\r\n\t\treturn musics.size();\r\n\t}\r\n\r\n\tpublic Music getMusic(int i) {\r\n\t\treturn musics.get(i);\r\n\t}\r\n\r\n\tpublic void addPlayList(String name) {\r\n\t\tplayLists.add(new PlayList());\r\n\t}\r\n\r\n\tpublic int countPlayList() {\r\n\t\treturn playLists.size();\r\n\t}\r\n\r\n}\r\n<\/pre>\n
\u30d7\u30ec\u30a4\u30ea\u30b9\u30c8\u3092\u53d6\u5f97\u3059\u308b\u30c6\u30b9\u30c8\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/p>\n
\r\n\t@Test\r\n\tvoid \u30d7\u30ec\u30a4\u30ea\u30b9\u30c8\u540d\u3092\u8abf\u3079\u308b() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addPlayList("\u304a\u6c17\u306b\u5165\u308a");\r\n\t\tPlayList p = mp.getPlayList(0);\r\n\t\tassertNotNull(p);\r\n\t}\r\n<\/pre>\n
getPlayList()\u306e\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u3092\u89e3\u6d88\u3059\u308b\u3002
\nMusicPlayer\u306b\u30e1\u30bd\u30c3\u30c9\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/p>\n
\r\n\tpublic PlayList getPlayList(int i) {\r\n\t\treturn null;\r\n\t}\r\n<\/pre>\n
\u30c6\u30b9\u30c8\u304c\u30a8\u30e9\u30fc\u306b\u306a\u308b\u306e\u3067\u3001fake\u3067\u30c6\u30b9\u30c8\u306b\u30d1\u30b9\u3055\u305b\u308b\u3002<\/p>\n
\r\n\tpublic PlayList getPlayList(int i) {\r\n\t\treturn new PlayList();\r\n\t}\r\n<\/pre>\n
\u30c6\u30b9\u30c8\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/p>\n
\r\n\t@Test\r\n\tvoid \u30d7\u30ec\u30a4\u30ea\u30b9\u30c8\u540d\u3092\u8abf\u3079\u308b() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addPlayList("\u304a\u6c17\u306b\u5165\u308a");\r\n\t\tPlayList p = mp.getPlayList(0);\r\n\t\tassertNotNull(p);\r\n\t\tString s = p.getName();\r\n\t\tassertThat(s, is("\u304a\u6c17\u306b\u5165\u308a"));\r\n\t}\r\n<\/pre>\n
getName() \u306e\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u3092\u89e3\u6d88\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\npublic class PlayList {\r\n\r\n\tpublic String getName() {\r\n\t\treturn null;\r\n\t}\r\n\r\n}\r\n<\/pre>\n
\u30c6\u30b9\u30c8\u304c\u30a8\u30e9\u30fc\u306b\u306a\u308b\u306e\u3067\u3001fake\u3067\u30c6\u30b9\u30c8\u306b\u30d1\u30b9\u3055\u305b\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\npublic class PlayList {\r\n\r\n\tpublic String getName() {\r\n\t\treturn "\u304a\u6c17\u306b\u5165\u308a";\r\n\t}\r\n\r\n}\r\n<\/pre>\n
\u30c6\u30b9\u30c8\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/p>\n
\r\n\t@Test\r\n\tvoid \u30d7\u30ec\u30a4\u30ea\u30b9\u30c8\u540d\u3092\u8abf\u3079\u308b() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addPlayList("\u304a\u6c17\u306b\u5165\u308a");\r\n\t\tPlayList p = mp.getPlayList(0);\r\n\t\tassertNotNull(p);\r\n\t\tString s = p.getName();\r\n\t\tassertThat(s, is("\u304a\u6c17\u306b\u5165\u308a"));\r\n\t\tmp.addPlayList("\u30d0\u30e9\u30fc\u30c9\u96c6");\r\n\t\tp = mp.getPlayList(1);\r\n\t\tassertThat(p.getName(), is("\u30d0\u30e9\u30fc\u30c9\u96c6"));\r\n\t}\r\n<\/pre>\n
\u30c6\u30b9\u30c8\u306b\u30d1\u30b9\u3059\u308b\u3088\u3046\u306bMusicPlayer\u3092\u5b9f\u88c5\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\nimport java.util.ArrayList;\r\nimport java.util.List;\r\n\r\npublic class MusicPlayer {\r\n\tprivate List<Music> musics = new ArrayList<>();\r\n\tprivate List<PlayList> playLists = new ArrayList<>();\r\n\r\n\tpublic void addMusic(String title, String artist) {\r\n\t\tMusic m = new Music();\r\n\t\tm.setTitle(title);\r\n\t\tm.setArtist(artist);\r\n\t\tmusics.add(m);\r\n\t}\r\n\r\n\tpublic int countMusic() {\r\n\t\treturn musics.size();\r\n\t}\r\n\r\n\tpublic Music getMusic(int i) {\r\n\t\treturn musics.get(i);\r\n\t}\r\n\r\n\tpublic void addPlayList(String name) {\r\n\t\tPlayList p = new PlayList();\r\n\t\tp.setName(name);\r\n\t\tplayLists.add(p);\r\n\t}\r\n\r\n\tpublic int countPlayList() {\r\n\t\treturn playLists.size();\r\n\t}\r\n\r\n\tpublic PlayList getPlayList(int i) {\r\n\t\treturn playLists.get(i);\r\n\t}\r\n\r\n}\r\n<\/pre>\n
\u30d7\u30ec\u30a4\u30ea\u30b9\u30c8\u306b\u97f3\u697d\u3092\u8ffd\u52a0\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u305f\u3044\uff01
\n\u30c6\u30b9\u30c8\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/p>\n
\r\n\t@Test\r\n\tvoid \u30d7\u30ec\u30a4\u30ea\u30b9\u30c8\u306b\u97f3\u697d\u3092\u8ffd\u52a0\u3059\u308b() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addMusic("Lemon", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tmp.addPlayList("\u304a\u6c17\u306b\u5165\u308a");\r\n\t\tMusic m = mp.getMusic(0);\r\n\t\tassertThat(m.getTitle(), is("Lemon"));\r\n\t\tPlayList p = mp.getPlayList(0);\r\n\t\tmp.addMusicToPlayList(m, p);\r\n\t\tint n = p.countMusic();\r\n\t\tassertThat(n, is(1));\r\n\t}\r\n<\/pre>\n
\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u3092\u89e3\u6d88\u3059\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\npublic class PlayList {\r\n\tprivate String name;\r\n\r\n\tpublic String getName() {\r\n\t\treturn name;\r\n\t}\r\n\r\n\tpublic void setName(String name) {\r\n\t\tthis.name = name;\r\n\t}\r\n\r\n\tpublic int countMusic() {\r\n\t\treturn 0;\r\n\t}\r\n\r\n}\r\n<\/pre>\n
fake\u3067\u30c6\u30b9\u30c8\u306b\u30d1\u30b9\u3055\u305b\u308b\u3002<\/p>\n
\r\npackage jp.abc;\r\n\r\npublic class PlayList {\r\n\tprivate String name;\r\n\r\n\tpublic String getName() {\r\n\t\treturn name;\r\n\t}\r\n\r\n\tpublic void setName(String name) {\r\n\t\tthis.name = name;\r\n\t}\r\n\r\n\tpublic int countMusic() {\r\n\t\treturn 1;\r\n\t}\r\n\r\n}\r\n<\/pre>\n
\u30c6\u30b9\u30c8\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/p>\n
\r\n\t@Test\r\n\tvoid \u30d7\u30ec\u30a4\u30ea\u30b9\u30c8\u306b\u97f3\u697d\u3092\u8ffd\u52a0\u3059\u308b() {\r\n\t\tMusicPlayer mp = new MusicPlayer();\r\n\t\tmp.addMusic("Lemon", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tmp.addMusic("flamingo", "\u7c73\u6d25\u7384\u5e2b");\r\n\t\tmp.addPlayList("\u304a\u6c17\u306b\u5165\u308a");\r\n\t\tMusic m = mp.getMusic(0);\r\n\t\tassertThat(m.getTitle(), is("Lemon"));\r\n\t\tPlayList p = mp.getPlayList(0);\r\n\t\tmp.addMusicToPlayList(m, p);\r\n\t\tint n = p.countMusic();\r\n\t\tassertThat(n, is(1));\r\n\t\tm = mp.getMusic(1);\r\n\t\tmp.addMusicToPlayList(m, p);\r\n\t\tn = p.countMusic();\r\n\t\tassertThat(n, is(2));\r\n\t}\r\n<\/pre>\n
TDD\u3059\u308b\u3068\u304d\u306f\u3001\u30a8\u30e9\u30fc\u72b6\u614b\u3067\u305d\u306e\u65e5\u306e\u4f5c\u696d\u3092\u7d42\u3048\u308b\u3002
\n\u6b21\u306b\u4f5c\u696d\u3092\u518d\u958b\u3059\u308b\u3068\u304d\u3001\u30c6\u30b9\u30c8\u3092\u5b9f\u884c\u3059\u308c\u3070\u30a8\u30e9\u30fc\u304c\u51fa\u308b\u306e\u3067\u3001\u305d\u3053\u304b\u3089\u518d\u958b\u3059\u308c\u3070\u3044\u3044\u3053\u3068\u304c\u3059\u3050\u306b\u308f\u304b\u308b\u3002<\/p>\n\n
<\/div>","protected":false},"excerpt":{"rendered":"
\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306e\u7df4\u7fd2\u3068\u3057\u3066\u3001\u97f3\u697d\u30d7\u30ec\u30fc\u30e4\u30fc\u307f\u305f\u3044\u306a\u30a2\u30d7\u30ea\u3092\u4f5c\u3063\u3066\u307f\u308b\u3002 \u30a2\u30d7\u30ea\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306b\u3001\u65b0\u898fJava\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3068\u3057\u3066\u300cmusicplayer\u300d\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u3002 \u65b0\u898f\u30af\u30e9\u30b9\u3067\u300cMusicPla … “5\u670810\u65e5” \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[],"_links":{"self":[{"href":"https:\/\/2019se3.satoshis.jp\/index.php?rest_route=\/wp\/v2\/posts\/28"}],"collection":[{"href":"https:\/\/2019se3.satoshis.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/2019se3.satoshis.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/2019se3.satoshis.jp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/2019se3.satoshis.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=28"}],"version-history":[{"count":17,"href":"https:\/\/2019se3.satoshis.jp\/index.php?rest_route=\/wp\/v2\/posts\/28\/revisions"}],"predecessor-version":[{"id":45,"href":"https:\/\/2019se3.satoshis.jp\/index.php?rest_route=\/wp\/v2\/posts\/28\/revisions\/45"}],"wp:attachment":[{"href":"https:\/\/2019se3.satoshis.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=28"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/2019se3.satoshis.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=28"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/2019se3.satoshis.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=28"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}