{"id":31520,"date":"2023-09-11T09:12:04","date_gmt":"2023-05-26T05:06:00","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90java%e3%80%91%e5%86%85%e9%83%a8%e7%b1%bb\/"},"modified":"2024-05-03T23:11:56","modified_gmt":"2024-05-03T15:11:56","slug":"%e3%80%90java%e3%80%91%e5%86%85%e9%83%a8%e7%b1%bb","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90java%e3%80%91%e5%86%85%e9%83%a8%e7%b1%bb\/","title":{"rendered":"\u3010Java\u3011\u5185\u90e8\u7c7b"},"content":{"rendered":"<h1>\u5d4c\u5957\u7c7b\uff08Nested Class\uff09<\/h1>\n<p>\u5165\u308c\u5b50\u30af\u30e9\u30b9\uff08Nested Class\uff09<\/p>\n<p>static\u30e1\u30f3\u30d0\u30fc\u30af\u30e9\u30b9<\/p>\n<p>\u5185\u90e8\u30af\u30e9\u30b9\uff08Inner Class\uff09<\/p>\n<p>\u975estatic\u30e1\u30f3\u30d0\u30fc\u30af\u30e9\u30b9<br \/>\n\u533f\u540d\u30af\u30e9\u30b9<\/p>\n<h2>\u9759\u6001\u6210\u5458\u7c7b<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u7279\u5b9a\u30af\u30e9\u30b9(MyClass)\u306b\u30af\u30e9\u30b9\uff08MyHelper\uff09\u304c\u4f9d\u5b58\u3001MyHelper\u306fMyClass\u304b\u3089\u3057\u304b\u547c\u3070\u308c\u306a\u3044<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u21921\u500b\u306e.java\u30d5\u30a1\u30a4\u30eb\u306b\u307e\u3068\u3081\u308b\u3053\u3068\u3092\u8003\u3048\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u30af\u30e9\u30b9\uff1a\u30cd\u30b9\u30c8\u3057\u3066\u306a\u3044\u30d5\u30a1\u30a4\u30eb\u76f4\u4e0b\u306e\u30af\u30e9\u30b9<\/p>\n<p>\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u30af\u30e9\u30b9\uff1a\u5165\u308c\u5b50\u306e\u30af\u30e9\u30b9\u3092\u5185\u5074\u306b\u542b\u3093\u3060\u30af\u30e9\u30b9<\/p>\n<p>\u89aa\u30af\u30e9\u30b9X\uff1a\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u30af\u30e9\u30b9\u304b\u3064\u30c8\u30c3\u30d7\u30ec\u30d9\u30eb\u30af\u30e9\u30b9<br \/>\n\u5b50\u30af\u30e9\u30b9Y\uff1aZ\u306e\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u30af\u30e9\u30b9\u3067X\u306e\u5165\u308c\u5b50\u30af\u30e9\u30b9<br \/>\n\u5b6b\u30af\u30e9\u30b9Z\uff1aY\u306e\u5165\u308c\u5b50\u30af\u30e9\u30b9<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">MyClass<\/span><span class=\"o\">{...}<\/span>\r\n<span class=\"kd\">class<\/span> <span class=\"nc\">MyHelper<\/span><span class=\"o\">{...}<\/span>\r\n<\/code><\/pre>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u3057\u304b\u3057\u3001MyHelper\u306f\u3042\u304f\u307e\u3067\u30d1\u30c3\u30b1\u30fc\u30b8\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u3067\u3001\u540c\u3058\u30d1\u30c3\u30b1\u30fc\u30b8\u304b\u3089\u306f\u81ea\u7531\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u2192static\u3067MyClass\u306e\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u306b\u3059\u3079\u304d\uff01<\/ul>\n<\/li>\n<\/ul>\n<p>\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u30af\u30e9\u30b9\u306eclass\u30d6\u30ed\u30c3\u30af\u914d\u4e0b\u3067\u5165\u308c\u5b50\u30af\u30e9\u30b9\u5b9a\u7fa9\u3059\u308b\u3068<\/p>\n<p>\u5165\u308c\u5b50\u30af\u30e9\u30b9\u306f\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u30af\u30e9\u30b9\u5916\u304b\u3089\u306f\u898b\u3048\u306a\u3044<br \/>\n\u5165\u308c\u5b50\u30af\u30e9\u30b9\u306e\u540d\u524d\u306f\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u30af\u30e9\u30b9.\u5165\u308c\u5b50\u30af\u30e9\u30b9(MyClass.MyHelper)<\/p>\n<p>\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u5185\u90e8\u3067\u306f\u30e1\u30f3\u30d0\u30fc\u30af\u30e9\u30b9\u540d\u3067\u547c\u3073\u51fa\u3057\u53ef\u80fd<\/p>\n<p>import (package\u540d).MyClass.MyHelper;\u3067\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u5916\u304b\u3089\u3082var h = new MyHelper();\u53ef\u80fd<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/class\u30d6\u30ed\u30c3\u30af\u914d\u4e0b\u3067MyHelper\u5b9a\u7fa9<\/span>\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">MyClass<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"c1\">\/\/static\u30e1\u30f3\u30d0\u30fc\u30af\u30e9\u30b9\u306e\u5b9a\u7fa9<\/span>\r\n  <span class=\"c1\">\/\/\u30e1\u30f3\u30d0\u30fc\u306fMyClass\u5916\u304b\u3089\u306f\u898b\u3048\u306a\u3044<\/span>\r\n  <span class=\"kd\">private<\/span> <span class=\"kd\">static<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">MyHelper<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">show<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n      <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"Nested class is running!\"<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"o\">}<\/span>\r\n  <span class=\"o\">}<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">run<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"c1\">\/\/\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u5185\u90e8\u3067\u306fMyHelper\u547c\u3073\u51fa\u3057\u53ef\u80fd<\/span>\r\n    <span class=\"kt\">var<\/span> <span class=\"n\">helper<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">MyHelper<\/span><span class=\"o\">();<\/span>\r\n    <span class=\"n\">helper<\/span><span class=\"o\">.<\/span><span class=\"na\">show<\/span><span class=\"o\">();<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">NestBasic<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kt\">var<\/span> <span class=\"n\">c<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">MyClass<\/span><span class=\"o\">();<\/span>\r\n    <span class=\"n\">c<\/span><span class=\"o\">.<\/span><span class=\"na\">run<\/span><span class=\"o\">();<\/span>\r\n    <span class=\"c1\">\/\/MyHelpe\u306fMyClass\u5916\u304b\u3089\u306f\u898b\u3048\u306a\u3044<\/span>\r\n    <span class=\"c1\">\/\/ var h = new MyClass.MyHelper(); \/\/\u30a8\u30e9\u30fc\uff01<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<h2>\u975e\u9759\u6001\u6210\u5458\u7c7b\uff08=\u5185\u90e8\u7c7b\uff09<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">static\u4fee\u98fe\u5b50\u306a\u3057<\/ul>\n<\/li>\n<\/ul>\n<p>\u5185\u90e8\u30af\u30e9\u30b9\uff1a\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u6240\u5c5e<\/p>\n<p>static\u30e1\u30f3\u30d0\u30fc\u30af\u30e9\u30b9\uff1a\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u30af\u30e9\u30b9\u306b\u6240\u5c5e<br \/>\n\u5185\u90e8\u30af\u30e9\u30b9\u306e\u7279\u5fb4<\/p>\n<p>\u5185\u90e8\u30af\u30e9\u30b9\u3092\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3059\u308b\u306b\u306f\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u5fc5\u8981<\/p>\n<p>\u5185\u90e8\u30af\u30e9\u30b9\u304b\u3089\u306fthis\u5909\u6570\u7d4c\u7531\u3067\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u30af\u30e9\u30b9\u30e1\u30f3\u30d0\u30fc\u306b\u30a2\u30af\u30bb\u30b9<\/p>\n<p>\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30d5\u30a3\u30fc\u30eb\u30c9\u53c2\u7167\u7528\u9014\u306b\u4f7f\u7528<br \/>\n\u500b\u3005\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3078\u306e\u53c2\u7167\u3092\u6301\u3064\u306e\u3067\u30e1\u30e2\u30ea\u3092\u6d88\u8cbb\u3059\u308b<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">class<\/span> <span class=\"nc\">MyClass<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"kd\">private<\/span> <span class=\"nc\">String<\/span> <span class=\"n\">str1<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u30fb\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\"<\/span><span class=\"o\">;<\/span>\r\n  <span class=\"kd\">private<\/span> <span class=\"kd\">static<\/span> <span class=\"nc\">String<\/span> <span class=\"n\">str2<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u30fb\u30af\u30e9\u30b9\"<\/span><span class=\"o\">;<\/span>\r\n\r\n  <span class=\"kd\">private<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">MyHelper<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kd\">private<\/span> <span class=\"nc\">String<\/span> <span class=\"n\">str1<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"\u30cd\u30b9\u30c8\u30fb\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\"<\/span><span class=\"o\">;<\/span>\r\n    <span class=\"kd\">private<\/span> <span class=\"kd\">static<\/span> <span class=\"kd\">final<\/span> <span class=\"nc\">String<\/span> <span class=\"n\">str2<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"\u30cd\u30b9\u30c8\u30fb\u30af\u30e9\u30b9\"<\/span><span class=\"o\">;<\/span>\r\n\r\n    <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">show<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n      <span class=\"c1\">\/\/\u5185\u90e8\u30af\u30e9\u30b9\u306f\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3078\u306e\u53c2\u7167\u3092\u6301\u3064<\/span>\r\n      <span class=\"c1\">\/\/MyClass.this\u3067\u30a2\u30af\u30bb\u30b9\u53ef<\/span>\r\n      <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"nc\">MyClass<\/span><span class=\"o\">.<\/span><span class=\"na\">this<\/span><span class=\"o\">.<\/span><span class=\"na\">str1<\/span><span class=\"o\">);<\/span> <span class=\"c1\">\/\/\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u30fb\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9<\/span>\r\n      <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"nc\">MyClass<\/span><span class=\"o\">.<\/span><span class=\"na\">str2<\/span><span class=\"o\">);<\/span> <span class=\"c1\">\/\/\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u30fb\u30af\u30e9\u30b9<\/span>\r\n    <span class=\"o\">}<\/span>\r\n  <span class=\"o\">}<\/span>\r\n\r\n  <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">run<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"c1\">\/\/\u5185\u90e8\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306f\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30e1\u30bd\u30c3\u30c9\u3067\u751f\u6210<\/span>\r\n    <span class=\"kt\">var<\/span> <span class=\"n\">helper<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">MyHelper<\/span><span class=\"o\">();<\/span>\r\n    <span class=\"n\">helper<\/span><span class=\"o\">.<\/span><span class=\"na\">show<\/span><span class=\"o\">();<\/span>\r\n    <span class=\"c1\">\/\/\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304b\u3089\u5185\u90e8\u30af\u30e9\u30b9\u306b\u30a2\u30af\u30bb\u30b9<\/span>\r\n    <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">helper<\/span><span class=\"o\">.<\/span><span class=\"na\">str1<\/span><span class=\"o\">);<\/span> <span class=\"c1\">\/\/\u30cd\u30b9\u30c8\u30fb\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9<\/span>\r\n    <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"nc\">MyHelper<\/span><span class=\"o\">.<\/span><span class=\"na\">str2<\/span><span class=\"o\">);<\/span> <span class=\"c1\">\/\/\u30cd\u30b9\u30c8\u30fb\u30af\u30e9\u30b9<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">NestedAccess<\/span> <span class=\"o\">{<\/span>\r\n  <span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kt\">var<\/span> <span class=\"n\">c<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">MyClass<\/span><span class=\"o\">();<\/span>\r\n    <span class=\"n\">c<\/span><span class=\"o\">.<\/span><span class=\"na\">run<\/span><span class=\"o\">();<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<h2>\u975e\u9759\u6001\u6210\u5458\u7c7b\uff08\u5185\u90e8\u7c7b\uff09\u7684\u5b9e\u4f8b<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">private\u5185\u90e8\u30af\u30e9\u30b9\u3092\u5ba3\u8a00\u3057\u305f\u3089\u30a8\u30f3\u30af\u30ed\u30fc\u30b8\u30f3\u30b0\u5916\u304b\u3089\u306f\u898b\u3048\u306a\u3044<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u898b\u3048\u306a\u304f\u306a\u308b\u306e\u306f\u578b\u540d\u306e\u307f\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u53c2\u7167\u306f\u5236\u9650\u306a\u3057<\/ul>\n<pre class=\"post-pre\"><code><span class=\"kn\">package<\/span> <span class=\"nn\">java.util<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">java.util.function.Consumer<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">abstract<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">AbstractList<\/span><span class=\"o\">&lt;<\/span><span class=\"no\">E<\/span><span class=\"o\">&gt;<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">AbstractCollection<\/span><span class=\"o\">&lt;<\/span><span class=\"no\">E<\/span><span class=\"o\">&gt;<\/span> <span class=\"kd\">implements<\/span> <span class=\"nc\">List<\/span><span class=\"o\">&lt;<\/span><span class=\"no\">E<\/span><span class=\"o\">&gt;<\/span> <span class=\"o\">{<\/span>\r\n<span class=\"c1\">\/\/...\u4e2d\u7565<\/span>\r\n\r\n    <span class=\"cm\">\/*Iterators\r\n    Itr\u30af\u30e9\u30b9\u306e\u5185\u90e8\u7684\u306a\u5b9f\u88c5\u3092\u898b\u305b\u308b\u5fc5\u8981\u306f\u306a\u3044\r\n    \u5916\u90e8\u304b\u3089\u306f\u5b9f\u88c5\u5143\u3067\u3042\u308bIterators\u578b\u304c\u898b\u3048\u305f\u3089\u3044\u3044\r\n    iterator\u30e1\u30bd\u30c3\u30c9\u306e\u623b\u308a\u5024\u306fIterator\u578b\r\n    *\/<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"nc\">Iterator<\/span><span class=\"o\">&lt;<\/span><span class=\"no\">E<\/span><span class=\"o\">&gt;<\/span> <span class=\"nf\">iterator<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"k\">new<\/span> <span class=\"nf\">Itr<\/span><span class=\"o\">();<\/span>\r\n    <span class=\"o\">}<\/span>\r\n<span class=\"c1\">\/\/...\u4e2d\u7565<\/span>\r\n\r\n    <span class=\"cm\">\/*\u5185\u90e8\u30af\u30e9\u30b9\r\n    \u30ea\u30b9\u30c8\u5185\u306eprivate\u30d5\u30a3\u30a4\u30fc\u30eb\u30c9\u306b\u30a2\u30af\u30bb\u30b9\u3001\u914d\u4e0b\u8981\u7d20\u3092\u9806\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u30a4\u30c6\u30ec\u30fc\u30bf\u3092\u5b9f\u88c5\r\n    \u30a4\u30c6\u30ec\u30fc\u30bf\u306fIterator\u5b9f\u88c5\u30af\u30e9\u30b9\u3068\u3057\u3066\u5225\u306b\u5b9a\u7fa9\u3059\u308b\r\n    *\/<\/span>\r\n    <span class=\"kd\">private<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">Itr<\/span> <span class=\"kd\">implements<\/span> <span class=\"nc\">Iterator<\/span><span class=\"o\">&lt;<\/span><span class=\"no\">E<\/span><span class=\"o\">&gt;<\/span> <span class=\"o\">{<\/span>\r\n<span class=\"c1\">\/\/...\u4e2d\u7565<\/span>\r\n    <span class=\"o\">}<\/span>\r\n<span class=\"c1\">\/\/...\u4e2d\u7565<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<h2>\u533f\u540d\u7c7b\uff08\u65e0\u540d\u7c7b\uff09<\/h2>\n<p>\u7279\u5b9a\u306e\u51e6\u7406\u3092\u307e\u3068\u3081\u3066\u8868\u3059\u305f\u3081\u306e\u5668\u3068\u3057\u3066\u4f7f\u3046<br \/>\nex:\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u30fc<\/p>\n<p>\u7279\u5b9a\u306e\u6587\u8108\uff08\u30e6\u30fc\u30b6\u30fc\u306e\u52d5\u4f5c\u306a\u3069\uff09\u306b\u5f37\u304f\u95a2\u9023\u3059\u308b\u306e\u3067\u4ed6\u3067\u306f\u518d\u5229\u7528\u3057\u306a\u3044<\/p>\n<p>new \u57fa\u5e95\u30af\u30e9\u30b9(\u5f15\u6570,&#8230;){\u30af\u30e9\u30b9\u306e\u672c\u4f53}<\/p>\n<p>new View.OnClickListener(){<br \/>\n\u533f\u540d\u30af\u30e9\u30b9\u306b\u306f\u540d\u524d\u304c\u306a\u3044\u306e\u3067new\u6f14\u7b97\u5b50\u306b\u57fa\u5e95\u30af\u30e9\u30b9\/\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u540d\u524d\u3092\u6307\u5b9a<br \/>\n\u7528\u610f\u3057\u305f\u30ea\u30b9\u30ca\u30fc\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u306f\u305d\u306e\u307e\u307e\u30e1\u30bd\u30c3\u30c9\u306b\u6e21\u305b\u308b<\/p>\n<p>\u6ce8\u610f\uff1b<\/p>\n<p>\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u6301\u3066\u306a\u3044\uff08\u521d\u671f\u5316\u306fOK\uff09<br \/>\n\u7d99\u627f\u4e0d\u53ef\uff08\u6697\u9ed9\u7684\u306bfinal\uff09<br \/>\n\u62bd\u8c61\u30af\u30e9\u30b9\u5ba3\u8a00\u4e0d\u53ef<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u30fc\u767b\u9332<\/span>\r\n<span class=\"n\">btn<\/span><span class=\"o\">.<\/span><span class=\"na\">setOnClickListener<\/span><span class=\"o\">(<\/span>\r\n  <span class=\"c1\">\/\/\u533f\u540d\u30af\u30e9\u30b9(\u30a4\u30d9\u30f3\u30c8\u30ea\u30b9\u30ca\u30fc)\u5b9a\u7fa9<\/span>\r\n  <span class=\"k\">new<\/span> <span class=\"nc\">View<\/span><span class=\"o\">.<\/span><span class=\"na\">OnClickListener<\/span><span class=\"o\">(){<\/span>\r\n    <span class=\"c1\">\/\/btn\u30af\u30ea\u30c3\u30af\u3067txt\u306b\u73fe\u5728\u6642\u523b\u3092\u8868\u793a<\/span>\r\n    <span class=\"nd\">@Override<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">onClick<\/span><span class=\"o\">(<\/span><span class=\"nc\">View<\/span> <span class=\"n\">view<\/span><span class=\"o\">){<\/span>\r\n      <span class=\"nc\">TextView<\/span> <span class=\"n\">txt<\/span> <span class=\"o\">=<\/span> <span class=\"n\">findViewById<\/span><span class=\"o\">(<\/span><span class=\"no\">R<\/span><span class=\"o\">.<\/span><span class=\"na\">id<\/span><span class=\"o\">.<\/span><span class=\"na\">txtResult<\/span><span class=\"o\">);<\/span>\r\n      <span class=\"n\">txt<\/span><span class=\"o\">.<\/span><span class=\"na\">setText<\/span><span class=\"o\">(<\/span><span class=\"nc\">LocalDateTime<\/span><span class=\"o\">.<\/span><span class=\"na\">now<\/span><span class=\"o\">().<\/span><span class=\"na\">toString<\/span><span class=\"o\">());<\/span>\r\n    <span class=\"o\">}<\/span>\r\n  <span class=\"o\">}<\/span>\r\n<span class=\"o\">);<\/span>\r\n<\/code><\/pre>\n<h2>\u672c\u5730\u7c7b<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30e1\u30bd\u30c3\u30c9\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u306a\u3069\u30d6\u30ed\u30c3\u30af\u914d\u4e0b\u3067\u5b9a\u7fa9\u3055\u308c\u305f\u30af\u30e9\u30b9<\/ul>\n<\/li>\n<\/ul>\n<p>\u30af\u30e9\u30b9\u304c\u7279\u5b9a\u306e\u30e1\u30bd\u30c3\u30c9\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u5229\u7528\u3055\u308c\u308b\u3068\u304d\u306b\u4f7f\u3046<br \/>\n\u533f\u540d\u30af\u30e9\u30b9\u3067\u4ee3\u7528OK<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5d4c\u5957\u7c7b\uff08Nested Class\uff09 \u5165\u308c\u5b50\u30af\u30e9\u30b9\uff08Nested Class\uff09 static\u30e1\u30f3\u30d0\u30fc\u30af\u30e9\u30b9 \u5185\u90e8 [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-31520","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u3010Java\u3011\u5185\u90e8\u7c7b - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u3010java\u3011\u5185\u90e8\u7c7b\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u3010Java\u3011\u5185\u90e8\u7c7b\" \/>\n<meta property=\"og:description\" content=\"\u5d4c\u5957\u7c7b\uff08Nested Class\uff09 \u5165\u308c\u5b50\u30af\u30e9\u30b9\uff08Nested Class\uff09 static\u30e1\u30f3\u30d0\u30fc\u30af\u30e9\u30b9 \u5185\u90e8 [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u3010java\u3011\u5185\u90e8\u7c7b\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-05-26T05:06:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-05-03T15:11:56+00:00\" \/>\n<meta name=\"author\" content=\"\u79d1, \u96c5\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u79d1, \u96c5\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 \u5206\" \/>\n<script 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