{"id":436,"date":"2023-03-31T19:24:08","date_gmt":"2023-03-31T10:24:08","guid":{"rendered":"https:\/\/baitimedx.com\/?p=436"},"modified":"2023-03-31T19:24:10","modified_gmt":"2023-03-31T10:24:10","slug":"%e4%b8%80%e7%95%aa%e3%82%aa%e3%83%bc%e3%83%ab%e3%83%9e%e3%82%a4%e3%83%86%e3%82%a3%e3%81%aa%e8%a8%80%e8%aa%9e%ef%bc%9fjava%e3%81%ae%e5%9f%ba%e7%a4%8e-%e3%83%87%e3%83%bc%e3%82%bf%e5%9e%8b%e3%81%8b","status":"publish","type":"post","link":"https:\/\/baitimedx.com\/?p=436","title":{"rendered":"\u4e00\u756a\u30aa\u30fc\u30eb\u30de\u30a4\u30c6\u30a3\u306a\u8a00\u8a9e\uff1fJava\u306e\u57fa\u790e- \u30c7\u30fc\u30bf\u578b\u304b\u3089\u30af\u30e9\u30b9\u3001\u4f8b\u5916\u51e6\u7406\u307e\u3067\u5fb9\u5e95\u89e3\u8aac"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/baitimedx.com\/wp-content\/uploads\/2023\/03\/dual-screen-1745705_1280-1024x682.png\" alt=\"\" class=\"wp-image-437\" srcset=\"https:\/\/baitimedx.com\/wp-content\/uploads\/2023\/03\/dual-screen-1745705_1280-1024x682.png 1024w, https:\/\/baitimedx.com\/wp-content\/uploads\/2023\/03\/dual-screen-1745705_1280-300x200.png 300w, https:\/\/baitimedx.com\/wp-content\/uploads\/2023\/03\/dual-screen-1745705_1280-768x511.png 768w, https:\/\/baitimedx.com\/wp-content\/uploads\/2023\/03\/dual-screen-1745705_1280.png 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Java\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u306e1\u3064\u3067\u3001\u30b7\u30f3\u30d7\u30eb\u3067\u5b89\u5168\u3001\u79fb\u690d\u6027\u304c\u9ad8\u304f\u3001\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u30a2\u30d7\u30ea\u306a\u3069\u5e45\u5e83\u3044\u5206\u91ce\u3067\u5229\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001Java\u306e\u57fa\u790e\u3092\u5b66\u3093\u3067\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Java\u306e\u7279\u5fb4<\/h2>\n\n\n\n<p>Java\u306e\u7279\u5fb4\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ul>\n<li><span class=\"st-mymarker-s\">\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\uff08OOP\uff09<\/span>: \u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u518d\u5229\u7528\u3057\u3084\u3059\u3044\u5f62\u306b\u69cb\u6210\u3067\u304d\u308b<\/li>\n\n\n\n<li><span class=\"st-mymarker-s\">\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306b\u4f9d\u5b58\u3057\u306a\u3044<\/span>: Java\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u7570\u306a\u308b\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u3067\u52d5\u4f5c\u3059\u308b<\/li>\n\n\n\n<li><span class=\"st-mymarker-s\">\u30ac\u30fc\u30d9\u30b8\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u6a5f\u80fd<\/span>: \u4e0d\u8981\u306b\u306a\u3063\u305f\u30e1\u30e2\u30ea\u3092\u81ea\u52d5\u3067\u89e3\u653e\u3059\u308b<\/li>\n\n\n\n<li><span class=\"st-mymarker-s\">\u591a\u6a5f\u80fd\u306a\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea<\/span>: \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3001\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306a\u3069\u591a\u304f\u306e\u6a5f\u80fd\u3092\u63d0\u4f9b<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Java\u306e\u57fa\u672c\u69cb\u6587<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5909\u6570\u3068\u30c7\u30fc\u30bf\u578b<\/h3>\n\n\n\n<p>Java\u3067\u306f\u3001\u5909\u6570\u3092\u4f7f\u7528\u3057\u3066\u30c7\u30fc\u30bf\u3092\u4fdd\u6301\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3001\u30c7\u30fc\u30bf\u578b\u3068\u5909\u6570\u540d\u3092\u8a18\u8ff0\u3057\u3066\u5ba3\u8a00\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>\u30c7\u30fc\u30bf\u578b \u5909\u6570\u540d;<\/code><\/pre>\n\n\n\n<p>Java\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u57fa\u672c\u30c7\u30fc\u30bf\u578b\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul>\n<li><span class=\"st-mymarker-s\">\u6574\u6570\u578b: byte, short, int, long<\/span><\/li>\n\n\n\n<li><span class=\"st-mymarker-s\">\u6d6e\u52d5\u5c0f\u6570\u70b9\u578b: float, double<\/span><\/li>\n\n\n\n<li><span class=\"st-mymarker-s\">\u6587\u5b57\u578b: char<\/span><\/li>\n\n\n\n<li><span class=\"st-mymarker-s\">\u8ad6\u7406\u578b: boolean<\/span><\/li>\n<\/ul>\n\n\n\n<p>\u4ee5\u4e0b\u306f\u5909\u6570\u5ba3\u8a00\u306e\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>int age;\ndouble height;\nboolean isAdult;\nchar initial;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u6f14\u7b97\u5b50<\/h3>\n\n\n\n<p>Java\u3067\u306f\u3001\u7b97\u8853\u6f14\u7b97\u5b50\u3084\u8ad6\u7406\u6f14\u7b97\u5b50\u306a\u3069\u3092\u4f7f\u7528\u3057\u3066\u3001\u8a08\u7b97\u3084\u6761\u4ef6\u5224\u65ad\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ul>\n<li><span class=\"st-mymarker-s\">\u7b97\u8853\u6f14\u7b97\u5b50<\/span>: <code>+<\/code>, <code>-<\/code>, <code>*<\/code>, <code>\/<\/code>, <code>%<\/code><\/li>\n\n\n\n<li><span class=\"st-mymarker-s\">\u6bd4\u8f03\u6f14\u7b97\u5b50<\/span>: <code>==<\/code>, <code>!=<\/code>, <code>&lt;<\/code>, <code>><\/code>, <code>&lt;=<\/code>, <code>>=<\/code><\/li>\n\n\n\n<li><span class=\"st-mymarker-s\">\u8ad6\u7406\u6f14\u7b97\u5b50<\/span>: <code>&amp;&amp;<\/code>, <code>||<\/code>, <code>!<\/code><\/li>\n\n\n\n<li><span class=\"st-mymarker-s\">\u4ee3\u5165\u6f14\u7b97\u5b50<\/span>: <code>=<\/code>, <code>+=<\/code>, <code>-=<\/code>, <code>*=<\/code>, <code>\/=<\/code>, <code>%=<\/code><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u5236\u5fa1\u69cb\u6587<\/h3>\n\n\n\n<p>Java\u3067\u306f\u3001\u6761\u4ef6\u5206\u5c90\u3084\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u3092\u884c\u3046\u305f\u3081\u306e\u5236\u5fa1\u69cb\u6587\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul>\n<li><span class=\"st-mymarker-s\">if\u6587<\/span>: \u6761\u4ef6\u306b\u5fdc\u3058\u3066\u51e6\u7406\u3092\u5b9f\u884c\u3059\u308b<\/li>\n\n\n\n<li><span class=\"st-mymarker-s\">switch\u6587<\/span>: \u5024\u306b\u5fdc\u3058\u3066\u51e6\u7406\u3092\u5206\u3051\u3066\u5b9f\u884c\u3059\u308b<\/li>\n\n\n\n<li><span class=\"st-mymarker-s\">for\u6587<\/span>: \u6307\u5b9a\u3055\u308c\u305f\u56de\u6570\u306e\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u3092\u884c\u3046<\/li>\n\n\n\n<li><span class=\"st-mymarker-s\">while\u6587<\/span>: \u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u3066\u3044\u308b\u9593\u3001\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u3092\u884c\u3046<\/li>\n\n\n\n<li><span class=\"st-mymarker-s\">do-while\u6587<\/span>: \u4e00\u5ea6\u51e6\u7406\u3092\u884c\u3044\u3001\u305d\u306e\u5f8c\u6761\u4ef6\u304c\u6e80\u305f\u3055\u308c\u3066\u3044\u308b\u9593\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u3092\u884c\u3046<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">if\u6587\u306e\u4f8b<\/h4>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>int score = 85;\n\nif (score >= 90) {\n    System.out.println(\"Excellent!\");\n} else if (score >= 70) {\n    System.out.println(\"Good!\");\n} else {\n    System.out.println(\"Keep trying!\");\n}<\/code><\/pre>\n\n\n\n<h5 class=\"wp-block-heading\">switch\u6587\u306e\u4f8b<\/h5>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>int day = 3;\nString dayName;\n\nswitch (day) {\n    case 1:\n        dayName = \"Monday\";\n        break;\n    case 2:\n        dayName = \"Tuesday\";\n        break;\n    case 3:\n        dayName = \"Wednesday\";\n        break;\n    \/\/ (\u7701\u7565)\n    default:\n        dayName = \"Invalid day\";\n}\n\nSystem.out.println(dayName);<\/code><\/pre>\n\n\n\n<h5 class=\"wp-block-heading\">for\u6587\u306e\u4f8b<\/h5>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>for (int i = 0; i &lt; 5; i++) {\n    System.out.println(\"<\/code>Hello, Java! \" + i);\r\n}<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">while\u6587\u306e\u4f8b<\/h4>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>int counter = 1;\n\nwhile (counter &lt;= 5) {\n    System.out.println(\"Counter: \" + counter);\n    counter++;\n}<\/code><\/pre>\n\n\n\n<h5 class=\"wp-block-heading\">do-while\u6587\u306e\u4f8b<\/h5>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>int number;\ndo {\n    System.out.print(\"Enter a number between 1 and 10: \");\n    Scanner scanner = new Scanner(System.in);\n    number = scanner.nextInt();\n} while (number &lt; 1 || number > 10);\n\nSystem.out.println(\"You entered: \" + number);<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u914d\u5217\u3068\u30b3\u30ec\u30af\u30b7\u30e7\u30f3<\/h2>\n\n\n\n<p>Java\u3067\u306f\u3001\u8907\u6570\u306e\u30c7\u30fc\u30bf\u3092\u307e\u3068\u3081\u3066\u6271\u3046\u305f\u3081\u306b\u914d\u5217\u3084\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u304c\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u914d\u5217<\/h3>\n\n\n\n<p>\u914d\u5217\u306f\u3001\u540c\u3058\u578b\u306e\u30c7\u30fc\u30bf\u3092\u8907\u6570\u683c\u7d0d\u3059\u308b\u305f\u3081\u306e\u30c7\u30fc\u30bf\u69cb\u9020\u3067\u3059\u3002\u914d\u5217\u306e\u5ba3\u8a00\u3068\u521d\u671f\u5316\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>\u30c7\u30fc\u30bf\u578b[] \u914d\u5217\u540d = new \u30c7\u30fc\u30bf\u578b[\u8981\u7d20\u6570];<\/code><\/pre>\n\n\n\n<p>\u307e\u305f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5ba3\u8a00\u3068\u540c\u6642\u306b\u521d\u671f\u5316\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>\u30c7\u30fc\u30bf\u578b[] \u914d\u5217\u540d = {\u8981\u7d201, \u8981\u7d202, \u8981\u7d203, ...};<\/code><\/pre>\n\n\n\n<p>\u914d\u5217\u306e\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u306b\u306f\u3001\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u4f7f\u3063\u3066\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>\u914d\u5217\u540d[\u30a4\u30f3\u30c7\u30c3\u30af\u30b9]<\/code><\/pre>\n\n\n\n<p>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f0\u304b\u3089\u59cb\u307e\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u914d\u5217\u306e\u4f7f\u7528\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>int[] numbers = {2, 4, 6, 8, 10};\n\nfor (int i = 0; i &lt; numbers.length; i++) {\n    System.out.println(\"numbers[\" + i + \"] = \" + numbers[i]);\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b3\u30ec\u30af\u30b7\u30e7\u30f3<\/h3>\n\n\n\n<p>\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u307e\u3068\u3081\u3066\u6271\u3046\u305f\u3081\u306e\u30c7\u30fc\u30bf\u69cb\u9020\u3067\u3001\u30ea\u30b9\u30c8\uff08ArrayList\uff09\u3001\u30bb\u30c3\u30c8\uff08HashSet\uff09\u3001\u30de\u30c3\u30d7\uff08HashMap\uff09\u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u30ea\u30b9\u30c8\u306e\u4f7f\u7528\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>import java.util.ArrayList;\n\nArrayList&lt;String> names = new ArrayList&lt;>();\n\nnames.add(\"Alice\");\nnames.add(\"Bob\");\nnames.add(\"Charlie\");\n\nfor (String name : names) {\n    System.out.println(name);\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u30af\u30e9\u30b9\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8<\/h2>\n\n\n\n<p>Java\u3067\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306b\u3001\u30af\u30e9\u30b9\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u5229\u7528\u3055\u308c\u307e\u3059\u3002\u30af\u30e9\u30b9\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u8a2d\u8a08\u56f3\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u30af\u30e9\u30b9\u306b\u57fa\u3065\u3044\u3066\u751f\u6210\u3055\u308c\u308b\u5b9f\u4f53\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30af\u30e9\u30b9\u306e\u5b9a\u7fa9<\/h3>\n\n\n\n<p>\u30af\u30e9\u30b9\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u69cb\u6587\u3067\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>class \u30af\u30e9\u30b9\u540d {\n    \/\/ \u30d5\u30a3\u30fc\u30eb\u30c9\uff08\u5c5e\u6027\uff09\n    \/\/ \u30e1\u30bd\u30c3\u30c9\uff08\u64cd\u4f5c\uff09\n}<\/code><\/pre>\n\n\n\n<p>\u4ee5\u4e0b\u306f\u3001<code>Person<\/code>\u30af\u30e9\u30b9\u306e\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>class Person {\n    String name;\n    int age;\n    \n    void introduce() {\n        System.out.println(\"Hello, my name is \" + name + \" and I'm \" + age + \" years old.\");\n    }\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u751f\u6210\u3068\u5229\u7528<\/h3>\n\n\n\n<p>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u3001<code>new<\/code>\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3057\u3066\u751f\u6210\u3057\u307e\u3059\u3002\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5c5e\u6027\u3084\u64cd\u4f5c\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u306b\u306f\u3001\u30c9\u30c3\u30c8<code>.<\/code>\u3092\u4f7f\u3063\u3066\u8a18\u8ff0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>\u30af\u30e9\u30b9\u540d \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u540d = new \u30af\u30e9\u30b9\u540d();<\/code><\/pre>\n\n\n\n<p>\u4ee5\u4e0b\u306f\u3001<code>Person<\/code>\u30af\u30e9\u30b9\u3092\u4f7f\u3063\u305f\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>Person person1 = new Person();\nperson1.name = \"Alice\";\nperson1.age = 30;\nperson1.introduce();\n\nPerson person2 = new Person();\nperson2.name = \"Bob\";\nperson2.age =25;\nperson2.introduce();<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf<\/h3>\n\n\n\n<p>\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u751f\u6210\u6642\u306b\u81ea\u52d5\u7684\u306b\u547c\u3073\u51fa\u3055\u308c\u308b\u7279\u6b8a\u306a\u30e1\u30bd\u30c3\u30c9\u3067\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u521d\u671f\u5316\u3092\u884c\u3044\u307e\u3059\u3002\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306f\u3001\u30af\u30e9\u30b9\u540d\u3068\u540c\u3058\u540d\u524d\u3092\u6301\u3061\u3001\u623b\u308a\u5024\u306e\u578b\u3092\u6301\u3061\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>class \u30af\u30e9\u30b9\u540d {\n    \u30af\u30e9\u30b9\u540d(\u5f15\u6570) {\n        \/\/ \u521d\u671f\u5316\u51e6\u7406\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u4ee5\u4e0b\u306f\u3001<code>Person<\/code>\u30af\u30e9\u30b9\u306b\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u8ffd\u52a0\u3057\u305f\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">javaCopy code<code>class Person {\n    String name;\n    int age;\n    \n    Person(String name, int age) {\n        this.name = name;\n        this.age = age;\n    }\n    \n    void introduce() {\n        System.out.println(\"Hello, my name is \" + name + \" and I'm \" + age + \" years old.\");\n    }\n}\n\nPerson person1 = new Person(\"Alice\", 30);\nperson1.introduce();\n\nPerson person2 = new Person(\"Bob\", 25);\nperson2.introduce();\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u7d99\u627f\u3068\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0<\/h2>\n\n\n\n<p>Java\u3067\u306f\u3001\u30af\u30e9\u30b9\u9593\u306b\u89aa\u5b50\u95a2\u4fc2\u3092\u6301\u305f\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u5b50\u30af\u30e9\u30b9\u306f\u89aa\u30af\u30e9\u30b9\u306e\u5c5e\u6027\u3084\u30e1\u30bd\u30c3\u30c9\u3092\u7d99\u627f\u3057\u3001\u65b0\u305f\u306a\u6a5f\u80fd\u3092\u8ffd\u52a0\u3057\u305f\u308a\u3001\u65e2\u5b58\u306e\u6a5f\u80fd\u3092\u4e0a\u66f8\u304d\uff08\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9\uff09\u3057\u305f\u308a\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30b3\u30fc\u30c9\u306e\u518d\u5229\u7528\u6027\u304c\u5411\u4e0a\u3057\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u8a2d\u8a08\u304c\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7d99\u627f\u306e\u69cb\u6587<\/h3>\n\n\n\n<p>\u7d99\u627f\u3092\u884c\u3046\u306b\u306f\u3001\u5b50\u30af\u30e9\u30b9\u306e\u5b9a\u7fa9\u306b<code>extends<\/code>\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>class \u5b50\u30af\u30e9\u30b9\u540d extends \u89aa\u30af\u30e9\u30b9\u540d {\n    \/\/ \u5b50\u30af\u30e9\u30b9\u306e\u5c5e\u6027\u3068\u30e1\u30bd\u30c3\u30c9\n}<\/code><\/pre>\n\n\n\n<p>\u4ee5\u4e0b\u306f\u3001<code>Person<\/code>\u30af\u30e9\u30b9\u3092\u7d99\u627f\u3057\u305f<code>Student<\/code>\u30af\u30e9\u30b9\u306e\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>class Student extends Person {\n    String major;\n    \n    Student(String name, int age, String major) {\n        super(name, age);\n        this.major = major;\n    }\n    \n    void study() {\n        System.out.println(name + \" is studying \" + major + \".\");\n    }\n}\n\nStudent student = new Student(\"Charlie\", 20, \"Computer Science\");\nstudent.introduce();\nstudent.study();<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0<\/h3>\n\n\n\n<p>\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u306f\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3001\u7570\u306a\u308b\u30af\u30e9\u30b9\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u540c\u3058\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u6301\u3064\u3053\u3068\u3092\u6307\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u67d4\u8edf\u6027\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>Java\u3067\u306f\u3001\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306b\u3001\u7d99\u627f\u3084\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5229\u7528\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5229\u7528\u3057\u305f\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\u306e\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>interface Animal {\n    void speak();\n}\n\nclass Dog implements Animal {\n    @Override\n    public void speak() {\n        System.out.println(\"Woof!\");\n    }\n}\n\nclass Cat implements Animal {\n    @Override\n    public void speak() {\n        System.out.println(\"Meow!\");\n    }\n}\n\npublic class Main {\n    public static void main(String[] args) {\n        Animal myDog = new Dog();\n        Animal myCat = new Cat();\n        \n        myDog.speak();\n        myCat.speak();\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001<code>Animal<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3057\u305f<code>Dog<\/code>\u30af\u30e9\u30b9\u3068<code>Cat<\/code>\u30af\u30e9\u30b9\u304c\u3042\u308a\u307e\u3059\u3002<code>Animal<\/code>\u578b\u306e\u5909\u6570\u306b<code>Dog<\/code>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3084<code>Cat<\/code>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4ee3\u5165\u3059\u308b\u3053\u3068\u3067\u3001\u7570\u306a\u308b\u30af\u30e9\u30b9\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u540c\u3058\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3067\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4f8b\u5916\u51e6\u7406<\/h2>\n\n\n\n<p>Java\u3067\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u767a\u751f\u3059\u308b\u30a8\u30e9\u30fc\u3092\u4f8b\u5916\uff08Exception\uff09\u3068\u3057\u3066\u6271\u3044\u307e\u3059\u3002\u4f8b\u5916\u51e6\u7406\u306f\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5b89\u5168\u6027\u3068\u4fe1\u983c\u6027\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306b\u91cd\u8981\u3067\u3059\u3002Java\u3067\u306f\u3001<code>try-catch<\/code>\u69cb\u6587\u3092\u4f7f\u3063\u3066\u4f8b\u5916\u51e6\u7406\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>try {\n    \/\/ \u4f8b\u5916\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u30b3\u30fc\u30c9\n} catch (\u4f8b\u5916\u30af\u30e9\u30b91 e) {\n    \/\/ \u4f8b\u5916\u30af\u30e9\u30b91\u306e\u4f8b\u5916\u304c\u767a\u751f\u3057\u305f\u3068\u304d\u306e\u51e6\u7406\n} catch (\u4f8b\u5916\u30af\u30e9\u30b92 e) {\n    \/\/ \u4f8b\u5916\u30af\u30e9\u30b92\u306e\u4f8b\u5916\u304c\u767a\u751f\u3057\u305f\u3068\u304d\u306e\u51e6\u7406\n} finally {\n    \/\/ \u4f8b\u5916\u306e\u767a\u751f\u306b\u95a2\u4fc2\u306a\u304f\u5b9f\u884c\u3055\u308c\u308b\u51e6\u7406\n}<\/code><\/pre>\n\n\n\n<p>\u4ee5\u4e0b\u306f\u3001\u4f8b\u5916\u51e6\u7406\u306e\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>import java.io.File;\nimport java.io.FileNotFoundException;\nimport java.util.Scanner;\n\npublic class Main {\n    public static void main(String[] args) {\n        try {\n            File file = new File(\"example.txt\");\n            Scanner scanner = new Scanner(file);\n            \n            while (scanner.hasNextLine()) {\n                String line = scanner.nextLine();\n                System.out.println(line);\n            }\n            \n            scanner.close();\n        } catch (FileNotFoundException e) {\n            System.out.println(\"Error: File not found.\");\n            e.printStackTrace();\n        } finally {\n            System.out.println(\"This message will always be displayed.\");\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001<code>example.txt<\/code>\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u307f\u8fbc\u3080\u969b\u306b<code>FileNotFoundException<\/code>\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u4f8b\u5916\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3001\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u3001\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u9069\u5207\u306b\u7d42\u4e86\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p>Java\u306e\u57fa\u790e\u3092\u5b66\u3076\u3053\u3068\u3067\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u5b9f\u73fe\u3059\u308b\u5f37\u529b\u3067\u67d4\u8edf\u306a\u8a00\u8a9e\u3092\u4f7f\u3044\u3053\u306a\u3059\u305f\u3081\u306e\u571f\u53f0\u3092\u7bc9\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001Java\u306e\u57fa\u672c\u6982\u5ff5\u3084\u69cb\u6587\u3092\u4ee5\u4e0b\u306e\u9805\u76ee\u3067\u8aac\u660e\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<ol>\n<li>\u30c7\u30fc\u30bf\u578b\u3068\u5909\u6570<\/li>\n\n\n\n<li>\u5236\u5fa1\u69cb\u9020\uff08if\u6587, switch\u6587, for\u6587, while\u6587, do-while\u6587\uff09<\/li>\n\n\n\n<li>\u914d\u5217\u3068\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\uff08ArrayList, HashSet, HashMap\uff09<\/li>\n\n\n\n<li>\u30af\u30e9\u30b9\u3068\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\uff08\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf, \u7d99\u627f, \u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0\uff09<\/li>\n\n\n\n<li>\u4f8b\u5916\u51e6\u7406\uff08try-catch\u69cb\u6587\uff09<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u57fa\u790e\u3092\u7406\u89e3\u3057\u3001\u7df4\u7fd2\u3092\u91cd\u306d\u308b\u3053\u3068\u3067\u3001Java\u3092\u7528\u3044\u305f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u958b\u767a\u304c\u30b9\u30e0\u30fc\u30ba\u306b\u9032\u3080\u3053\u3068\u3067\u3057\u3087\u3046\u3002\u4eca\u5f8c\u3082Java\u306e\u6a5f\u80fd\u3092\u7fd2\u5f97\u3057\u3001\u7d20\u6674\u3089\u3057\u3044\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u3059\u308b\u304d\u3063\u304b\u3051\u306b\u306a\u308c\u308c\u3070\u5e78\u3044\u3067\u3059\uff01<\/p>\n\n\n\n<p>\u4eca\u5f8c\u3082\u3001IT\u3084DX\u3001\u6295\u8cc7\u7b49\u306b\u95a2\u3059\u308b\u4eba\u751f\u3092\u8c4a\u304b\u306b\u3057\u3066\u81ea\u7531\u306a\u6642\u9593\u3092\u5897\u3084\u305b\u308b\u3088\u3046\u306a\u60c5\u5831\u3092\u767a\u4fe1\u3057\u3066\u3044\u304d\u307e\u3059\u306e\u3067\u662f\u975e\u304a\u697d\u3057\u307f\u306b\uff01<\/p>\n\n\n\n<p><strong>\u2193\u3000\u30aa\u30b9\u30b9\u30e1\u8a18\u4e8b\u3000\u2193<\/strong><\/p>\n\n\n\n<p><a href=\"https:\/\/baitimedx.com\/?p=432\">\u30b5\u30a4\u30c8\u306e\u5916\u89b3\u3092\u6c7a\u3081\u308b\u8a00\u8a9e\uff1fCSS\u5165\u9580 &#8211; \u57fa\u672c\u6982\u5ff5\u3068\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/baitimedx.com\/?p=429\">\u5fc5\u9808\u306e\u8a00\u8a9e\uff1fHTML\u5165\u9580 &#8211; \u30a6\u30a7\u30d6\u30da\u30fc\u30b8\u69cb\u7bc9\u306e\u57fa\u672c\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/baitimedx.com\/?p=425\">\u521d\u5fc3\u8005\u306b\u30aa\u30b9\u30b9\u30e1\u306e\u8a00\u8a9e\uff1fPython\u5165\u9580 &#8211; 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