{"id":38,"date":"2007-01-24T23:24:49","date_gmt":"2007-01-24T14:24:49","guid":{"rendered":"http:\/\/www.typea.info\/blog\/index.php\/2007\/01\/24\/java\/"},"modified":"2007-01-24T23:24:49","modified_gmt":"2007-01-24T14:24:49","slug":"java","status":"publish","type":"post","link":"https:\/\/www.typea.info\/blog\/index.php\/2007\/01\/24\/java\/","title":{"rendered":"Java \u30aa\u30fc\u30c8\u30dc\u30af\u30b7\u30f3\u30b0\u306b\u6c17\u3092\u3064\u3051\u308d"},"content":{"rendered":"<p>java \u3092\u5b66\u3093\u3060\u4eba\u306b\u3068\u3063\u3066\u3001\u300cString\u306e\u6bd4\u8f03\u306f\u3001== \u3067\u306f\u306a\u304f\u3001equals\u30e1\u30bd\u30c3\u30c9\u3092\u5229\u7528\u3059\u308b\u300d\u3068\u3044\u3046\u306e\u306f\u3001\u5e38\u8b58\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u300c==\u300d\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u540c\u3058\u304b\u3069\u3046\u304b\u3092\u5224\u5b9a\u3059\u308b\u3093\u3067\u3042\u3063\u3066\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u540c\u5024\u304b\u306f\u300cequals\u300d\u3092\u4f7f\u3063\u3066\u5224\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<p>\u3061\u3087\u3063\u3068\u3084\u3084\u3053\u3057\u3044\u306e\u306f\u3001<a href=\"http:\/\/www.google.co.jp\/search?q=java%20%E6%96%87%E5%AD%97%E5%88%97%E3%83%97%E3%83%BC%E3%83%AB&#038;sourceid=navclient-ff&#038;ie=UTF-8&#038;rls=GGGL,GGGL:2006-32,GGGL:ja\">\u6587\u5b57\u5217\u30d7\u30fc\u30eb<\/a>\u3068\u3044\u3046\u4ed5\u7d44\u307f\u304c\u3042\u308b\u305f\u3081\u306b\u3001\u30ea\u30c6\u30e9\u30eb\u306e\u6587\u5b57\u5217\u306b\u3064\u3044\u3066\u306f\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u5171\u6709\u3059\u308b\u306e\u3067\u3001\u6b21\u306e\u3088\u3046\u306b\u540c\u3058&#8221;abc&#8221;\u3092\u3042\u3089\u308f\u3059\u6587\u5b57\u5217\u3067\u3082\u3001\u300c==\u300d\u3067\u6bd4\u8f03\u3057\u305f\u3068\u304d\u306b\u3001\u7d50\u679c\u304ctrue\u306b\u306a\u3063\u305f\u308afalse\u306b\u306a\u3063\u305f\u308a\u3059\u308b\u70b9\u3067\u3057\u3087\u3046\u3002<\/p>\n<div class='code'>\n&nbsp;&nbsp;&nbsp;&nbsp;<span class='kwd'>String<\/span>&nbsp;a&nbsp;=&nbsp;&#8220;abc&#8221;;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;<span class='kwd'>String<\/span>&nbsp;b&nbsp;=&nbsp;&#8220;abc&#8221;;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;<span class='kwd'>String<\/span>&nbsp;c&nbsp;=&nbsp;<span class='kwd'>new<\/span>&nbsp;<span class='kwd'>String<\/span>(&#8220;abc&#8221;);<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;System.out.println(a&nbsp;==&nbsp;b);&nbsp;&nbsp;&nbsp;<span class='cmt'>\/\/&nbsp;\u3053\u308c\u306f\u3001true<\/span><br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;System.out.println(a&nbsp;==&nbsp;c);&nbsp;&nbsp;&nbsp;<span class='cmt'>\/\/&nbsp;\u3053\u308c\u306f\u3001false<\/span>\n<\/div>\n<p>\u3067\u3082\u3001equals\u30e1\u30bd\u30c3\u30c9\u306a\u3089\u3001\u6587\u5b57\u5217\u304c\u8868\u3059\u5024\u304c\u540c\u3058\u306a\u3089true\u3092\u8fd4\u3057\u3066\u304f\u308c\u307e\u3059\u3002<br \/>\n\u306a\u306e\u3067\u3001\u6587\u5b57\u5217\u306e\u6bd4\u8f03\u3067\u306f\u300c\u5e38\u306b equals\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3046\u300d\u3068\u3044\u3046\u5358\u7d14\u306a\u6226\u7565\u3067\u30aa\u30fc\u30b1\u30fc\u3067\u3059\u3002<\/p>\n<p>\u3067\u3001\u5f85\u671b(?)\u306e\u30aa\u30fc\u30c8\u30dc\u30af\u30b7\u30f3\u30b0\/\u30a2\u30f3\u30dc\u30af\u30b7\u30f3\u30b0\u6a5f\u80fd\u3092\u898b\u3066\u307f\u307e\u3059\u3068\u3001\u53c2\u7167\u578b\u3067\u300c==\u300d\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u540c\u3058\u304b\u3069\u3046\u304b\u306e\u6bd4\u8f03\u3060\u3063\u305f\u3093\u3067\u3059\u304c\u3001<a href=\"http:\/\/java.sun.com\/docs\/books\/jls\/third_edition\/html\/conversions.html#5.1.8\">\u30a2\u30f3\u30dc\u30af\u30b7\u30f3\u30b0<\/a>\u304c\u884c\u308f\u308c\u308b\u305f\u3081\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u3068\u306e\u6bd4\u8f03\u306e\u5834\u5408\u3001\u540c\u4e00\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u306e\u6bd4\u8f03\u3067\u306f\u306a\u304f\u3001\u540c\u3058\u5024\u3067\u3042\u308b\u304b\u3068\u3044\u3046\u6bd4\u8f03\u304c\u884c\u308f\u308c\u307e\u3059\u3002<\/p>\n<div class='code'>\n&nbsp;&nbsp;&nbsp;&nbsp;<span class='kwd'>int<\/span>&nbsp;i1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=&nbsp;77;&nbsp;<span class='cmt'>\/\/&nbsp;\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b<\/span><br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;Integer&nbsp;i2&nbsp;=&nbsp;77;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;System.out.println(i1&nbsp;==&nbsp;i2);&nbsp;<span class='cmt'>\/\/&nbsp;true&nbsp;\u540c\u5024<\/span>\n<\/div>\n<p>\u307e\u305f\u3001\u4ee5\u4e0b\u306e\u4f8b\u306e\u3088\u3046\u306b\u3001\u53c2\u7167\u578b\u3069\u3046\u3057\u3092\u6bd4\u8f03\u3057\u3066\u3082\u3001true\u304c\u8fd4\u308a\u307e\u3059\u3002<\/p>\n<div class='code'>\n&nbsp;&nbsp;&nbsp;&nbsp;<span class='cmt'>\/\/&nbsp;\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u6bd4\u8f031<\/span><br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;Integer&nbsp;i3&nbsp;=&nbsp;99;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;Integer&nbsp;i4&nbsp;=&nbsp;99;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;System.out.println(i3&nbsp;==&nbsp;i4);&nbsp;<span class='cmt'>\/\/&nbsp;true<\/span><\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;Boolean&nbsp;b1&nbsp;=&nbsp;true;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;Boolean&nbsp;b2&nbsp;=&nbsp;true;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;System.out.println(b1&nbsp;==&nbsp;b2);&nbsp;<span class='cmt'>\/\/&nbsp;true<\/span>\n<\/div>\n<p>\u3059\u3070\u3089\u3057\u3044\uff01\u4eca\u307e\u3067\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u3092\u4f7f\u3063\u3066\u305f\u3068\u3053\u308d\u3092\u30af\u30e9\u30b9\u306b\u7f6e\u304d\u63db\u3048\u3061\u3083\u3048\uff01<a href=\"http:\/\/www.google.co.jp\/search?hl=ja&#038;rls=GGGL%2CGGGL%3A2006-32%2CGGGL%3Aja&#038;q=%E5%AF%8C%E8%B1%AA%E7%9A%84%E3%83%97%E3%83%AD%E3%82%B0%E3%83%A9%E3%83%9F%E3%83%B3%E3%82%B0&#038;btnG=Google+%E6%A4%9C%E7%B4%A2&#038;lr=lang_ja\">\u5bcc\u8c6a\u7684\u30d7\u30ed\u30b0\u30e9\u30de(?)<\/a>\u3092\u76ee\u6307\u3059\u306a\u3089\u3001\u6b21\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u3082\u305f\u3081\u3089\u308f\u305a\u306b\u304b\u3051\u3061\u3083\u3046\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u7684\u306b\u3082\u30d9\u30bf\u30fc(\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u306e\u5b58\u5728\u304c\u6b3a\u779e\u3060\u3063\u305f\u306e\u3060\uff01)\u306e\u304b\u3082\uff1f<\/p>\n<div class='code'>\n&nbsp;&nbsp;&nbsp;&nbsp;Integer&nbsp;max&nbsp;&nbsp;&nbsp;=&nbsp;999;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;Integer&nbsp;case1&nbsp;=&nbsp;100;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;Integer&nbsp;case2&nbsp;=&nbsp;300;<\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;<span class='kwd'>for<\/span>&nbsp;(Integer&nbsp;i=0;&nbsp;i&nbsp;&lt;&nbsp;max;&nbsp;i++)&nbsp;{<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class='kwd'>if<\/span>&nbsp;(i&nbsp;==&nbsp;case1)&nbsp;{<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class='kwd'>if<\/span>&nbsp;(i&nbsp;==&nbsp;case2)&nbsp;{<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;}\n<\/div>\n<p>\u3057\u304b\u3057\u3001\u3061\u3087\u3061\u3087\u3063\u3068\u307e\u3063\u3066\u304f\u3060\u3055\u3044\u3002\u4e00\u898b\u4fbf\u5229\u306b\u306a\u3063\u305f\u3088\u3046\u306a\u300c==\u300d\u306b\u3088\u308b\u6bd4\u8f03\u3067\u3059\u304c\u3001\u7c21\u5358\u306b\u4fe1\u7528\u3059\u308b\u306e\u306f\u7518\u3059\u304e\u307e\u3057\u305f\u3002\u4e0a\u306e\u4f8b\u3067\u306f\u3001 case2 \u306e\u30d6\u30ed\u30c3\u30af\u304c\u5b9f\u884c\u3055\u308c\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308b\u3093\u3067\u3059\u3002<\/p>\n<div class='code'>\n&nbsp;&nbsp;&nbsp;&nbsp;<span class='cmt'>\/\/&nbsp;\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u6bd4\u8f032<\/span><br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;Integer&nbsp;j1&nbsp;=&nbsp;<span class='kwd'>new<\/span>&nbsp;Integer(99);<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;Integer&nbsp;j2&nbsp;=&nbsp;<span class='kwd'>new<\/span>&nbsp;Integer(99);<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;System.out.println(j1&nbsp;==&nbsp;j2);&nbsp;<span class='cmt'>\/\/&nbsp;false<\/span><\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;<span class='cmt'>\/\/&nbsp;-128&nbsp;\uff5e&nbsp;127&nbsp;\u4ee5\u5916\u306f&nbsp;false&nbsp;\u3068\u306a\u308b!!<\/span><br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;Integer&nbsp;j3&nbsp;=&nbsp;200;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;Integer&nbsp;j4&nbsp;=&nbsp;200;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;System.out.println(j3&nbsp;==&nbsp;j4);&nbsp;<span class='cmt'>\/\/&nbsp;false<\/span><\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;<span class='cmt'>\/\/&nbsp;Boolean&nbsp;\u3082\u540c\u69d8\uff01<\/span><br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;Boolean&nbsp;b3&nbsp;=&nbsp;<span class='kwd'>new<\/span>&nbsp;Boolean(true);<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;Boolean&nbsp;b4&nbsp;=&nbsp;<span class='kwd'>new<\/span>&nbsp;Boolean(true);<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;System.out.println(b3&nbsp;==&nbsp;b4);&nbsp;<span class='cmt'>\/\/&nbsp;false<\/span>\n<\/div>\n<p>\u78ba\u304b\u306b\u3001\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u3068\u53c2\u7167\u578b\u3068\u306e\u6bd4\u8f03\u3067\u306f\u3001\u53c2\u7167\u578b\u304c\u30a2\u30f3\u30dc\u30af\u30b7\u30f3\u30b0\u3055\u308c\u3066\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u3069\u3046\u3057\u306e\u6bd4\u8f03\u3068\u540c\u3058\u3053\u3068\u306b\u306a\u3063\u3066\u3044\u307e\u3057\u305f\u3002\u8981\u3059\u308b\u306b\u3001<\/p>\n<div class='code'>\n&nbsp;&nbsp;&nbsp;i1&nbsp;==&nbsp;i2\n<\/div>\n<p>\u3068\u3044\u3046\u306e\u306f\u3001<\/p>\n<div class='code'>\n&nbsp;&nbsp;&nbsp;i1&nbsp;==&nbsp;i2.intValue();&nbsp;<span class='cmt'>\/\/&nbsp;i2&nbsp;\u304c\u30a2\u30f3\u30dc\u30af\u30b7\u30f3\u30b0\u3055\u308c\u308b\u3002<\/span>\n<\/div>\n<p>\u306e\u30b7\u30f3\u30bf\u30c3\u30af\u30b9\u30b7\u30e5\u30ac\u30fc\u3060\u3063\u305f\u308f\u3051\u3067\u3059\u3002<\/p>\n<p>\u3051\u308c\u3069\u3082\u3001\u5b9f\u306f\u3001\u53c2\u7167\u578b\u3069\u3046\u3057\u306e\u6bd4\u8f03\u306e\u5834\u5408\u3001\u30a2\u30f3\u30dc\u30af\u30b7\u30f3\u30b0\u306f\u884c\u308f\u308c\u307e\u305b\u3093\u3002\u8981\u3059\u308b\u306b\u4eca\u307e\u3067\u3069\u304a\u308a\u306e\u540c\u4e00\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304b\u3092\u6bd4\u8f03\u3059\u308b\u300c==\u300d\u306a\u306e\u3067\u3059\u3002<\/p>\n<p>\u3093\uff1f<\/p>\n<div class='code'>\n&nbsp;&nbsp;&nbsp;&nbsp;Integer&nbsp;i3&nbsp;=&nbsp;99;&nbsp;&nbsp;<span class='cmt'>\/\/&nbsp;\u30dc\u30af\u30b7\u30f3\u30b0<\/span><br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;Integer&nbsp;i4&nbsp;=&nbsp;99;&nbsp;&nbsp;<span class='cmt'>\/\/&nbsp;\u30dc\u30af\u30b7\u30f3\u30b0<\/span><br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;System.out.println(i3&nbsp;==&nbsp;i4);&nbsp;<span class='cmt'>\/\/&nbsp;true<\/span><\/p>\n<p>&nbsp;&nbsp;&nbsp;&nbsp;Boolean&nbsp;b1&nbsp;=&nbsp;true;&nbsp;<span class='cmt'>\/\/&nbsp;\u30dc\u30af\u30b7\u30f3\u30b0<\/span><br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;Boolean&nbsp;b2&nbsp;=&nbsp;true;&nbsp;<span class='cmt'>\/\/&nbsp;\u30dc\u30af\u30b7\u30f3\u30b0<\/span><br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;System.out.println(b1&nbsp;==&nbsp;b2);&nbsp;<span class='cmt'>\/\/&nbsp;true<\/span>\n<\/div>\n<p>\u3055\u3063\u304d\u3001\u3053\u306e\u30b3\u30fc\u30c9\u3067\u306f true \u306b\u306a\u3063\u305f\u3084\u3093\u3051\uff5e<\/p>\n<p>\u306a\u3093\u3068\u3001\u5b9f\u306f\u3001<a href=\"http:\/\/java.sun.com\/docs\/books\/jls\/third_edition\/html\/conversions.html#5.1.7\">true, false, byte, char(\\u0000 \u304b\u3089 \\u007f), int \u3082\u3057\u304f\u306f short (-128 and 127) \u3092\u30dc\u30af\u30b7\u30f3\u30b0\u306b\u3088\u308a\u4f5c\u6210\u3057\u305f\u5834\u5408\u306f\u3001\u300c==\u300d\u3092\u4f7f\u3063\u305f\u7d50\u679c\u3082\u7b49\u3057\u304f\u306a\u308b\u3002\u3002\u3002<\/a>\u3068\u3044\u3046\u4ed5\u69d8\u306a\u306e\u3067\u3059\u3002<\/p>\n<p>\u5b9f\u969b\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u8997\u3044\u3066\u307f\u308b\u3068\u3001\u4f8b\u3048\u3070\u3001Integer.IntegerCache \u3068\u3044\u3046\u30b9\u30bf\u30c6\u30a3\u30c3\u30af\u306a\u30a4\u30f3\u30ca\u30fc\u30af\u30e9\u30b9\u306b\u3001-128 \uff5e 127 \u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u3066\u3044\u3066\u3001\u305d\u306e\u7bc4\u56f2\u306e\u5024\u306f\u3001\u305d\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u305f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u5229\u7528\u3059\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n<p>\u8981\u3059\u308b\u306b\u3001\u30dc\u30af\u30b7\u30f3\u30b0\u3092\u5229\u7528\u3057\u3066\u751f\u6210\u3055\u308c\u305f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306f\u3001\u4e0a\u8a18\u306e\u7bc4\u56f2\u306e\u5024\u306b\u9650\u3063\u3066\u3001String\u306e\u6587\u5b57\u5217\u30d7\u30fc\u30eb\u3068\u540c\u69d8\u306e\u3053\u3068\u304c\u304a\u3053\u308b\u308f\u3051\u3067\u3059\u3002<\/p>\n<p>\u3057\u304b\u3082\u3001\u300c\u30d7\u30fc\u30eb\u300d\u3055\u308c\u308b\u306e\u306f\u3001-128 \uff5e 127 \u306e\u7bc4\u56f2\u306b\u9650\u3089\u308c\u3046\u3048\u3001\u6587\u5b57\u5217\u306e\u3088\u3046\u306b\u30ea\u30c6\u30e9\u30eb\u306b\u9650\u3089\u308c\u308b\u308f\u3051\u3067\u3082\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<div class='code'>\n<span class='kwd'>public<\/span>&nbsp;<span class='kwd'>static<\/span>&nbsp;<span class='kwd'>void<\/span>&nbsp;main(<span class='kwd'>String<\/span>[]&nbsp;args)&nbsp;{<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;<span class='kwd'>int<\/span>&nbsp;i0&nbsp;=&nbsp;Integer.parseInt(args[0]);<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;Integer&nbsp;i1&nbsp;=&nbsp;i0;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;Integer&nbsp;i2&nbsp;=&nbsp;i0;<br \/>\n&nbsp;&nbsp;&nbsp;&nbsp;System.out.println(i1&nbsp;==&nbsp;i2);<br \/>\n}\n<\/div>\n<p>\u306e\u3088\u3046\u306a\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u306f\u3001arg[0] \u306e\u5024\u304c\u3001-128 \uff5e 127 \u306b\u542b\u307e\u308c\u308b\u304b\u5426\u304b\u306b\u3088\u3063\u3066\u3001\u7d50\u679c\u304c\u5909\u308f\u3063\u3066\u304d\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n<p>\u306a\u304b\u306a\u304b\u3001\u8907\u96d1\u306a\u4ed5\u69d8\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304b\uff01\uff1f<br \/>\n\u6587\u5b57\u5217\u306e\u6bd4\u8f03\u3067\u306f\u300c\u5e38\u306b equals\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3046\u300d\u3068\u3044\u3046\u6226\u7565\u3067OK\u3067\u3057\u305f\u304c\u3001\u30dc\u30af\u30b7\u30f3\u30b0\u3001\u30a2\u30f3\u30dc\u30af\u30b7\u30f3\u30b0\u3092\u8003\u616e\u3057\u305f\u3068\u304d\u306b\u306f\u3069\u3046\u3044\u3046\u6226\u7565\u3092\u3068\u308b\u306e\u304c\u30d9\u30bf\u30fc\u306a\u3093\u3067\u3057\u3087\u3046\uff1f<\/p>\n<p>\u307e\u3041\u3001\u3053\u3046\u3044\u3046\u4ed5\u69d8\u306b\u306a\u3063\u305f\u306e\u306b\u306f\u304a\u305d\u3089\u304f\u6df1\u9060\u306a\u7406\u7531\u304c\u3042\u308b\u306e\u3067\u3057\u3087\u3046\u304c\u3002<br \/>\n\u308f\u304b\u308a\u306b\u304f\u30fc\u30fc\u3044\u30d0\u30b0\u306e\u6e29\u5e8a\u306b\u306a\u3063\u3061\u3083\u3046\u4e88\u611f\u304c\u6fc0\u3057\u304f\u3059\u308b\u306e\u306f\u50d5\u3060\u3051\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<p>C#\u3068\u304b\u3069\u3046\u3044\u3046\u4ed5\u69d8\u306b\u306a\u3063\u3066\u308b\u3093\u3060\u308d\u3002<\/p>\n<p><iframe loading=\"lazy\" src=\"http:\/\/astore.amazon.co.jp\/typea-java-22\" width=\"100%\" height=\"900\" frameborder=\"0\" scrolling=\"no\"><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>java \u3092\u5b66\u3093\u3060\u4eba\u306b\u3068\u3063\u3066\u3001\u300cString\u306e\u6bd4\u8f03\u306f\u3001== \u3067\u306f\u306a\u304f\u3001equals\u30e1\u30bd\u30c3\u30c9\u3092\u5229\u7528\u3059\u308b\u300d\u3068\u3044\u3046\u306e\u306f\u3001\u5e38\u8b58\u3067\u3057\u3087\u3046\u3002 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