{"id":31714,"date":"2023-10-31T03:31:13","date_gmt":"2023-09-15T13:23:08","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/java-%e6%95%b0%e7%bb%84%e7%9a%84%e5%a4%87%e5%bf%98%e5%bd%95\/"},"modified":"2024-05-04T06:49:43","modified_gmt":"2024-05-03T22:49:43","slug":"java-%e6%95%b0%e7%bb%84%e7%9a%84%e5%a4%87%e5%bf%98%e5%bd%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java-%e6%95%b0%e7%bb%84%e7%9a%84%e5%a4%87%e5%bf%98%e5%bd%95\/","title":{"rendered":"[Java] \u6570\u7ec4\u7684\u5907\u5fd8\u5f55"},"content":{"rendered":"<h1>\u76ee\u6807<\/h1>\n<p>\u7531\u4e8e\u5bf9Java\u6570\u7ec4\u7684\u5904\u7406\u65b9\u6cd5\u5206\u5e03\u5728\u591a\u4e2a\u7c7b\u4e2d\uff0c\u56e0\u6b64\u9700\u8981\u6574\u7406\u4e00\u4e0b\u3002<br \/>\n\u8fd9\u91cc\u4e0d\u4f1a\u5bf9\u6bcf\u4e2a\u65b9\u6cd5\u8fdb\u884c\u8be6\u7ec6\u89e3\u91ca\u3002<\/p>\n<h1>\u57fa\u672c\u7684\u4e8b\u60c5 de<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u914d\u5217\u306f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8<\/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\">\u591a\u6b21\u5143\u914d\u5217\u306f\u3001\u914d\u5217\u306e\u914d\u5217\u3067\u3042\u3089\u308f\u3059<\/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\">\u914d\u5217\u306f\u5171\u5909(covariant)<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Iterable\u3067\u306f\u306a\u3044\u3051\u3069\u3001\u62e1\u5f35for\u30eb\u30fc\u30d7\u306b\u4f7f\u7528\u53ef\u80fd<\/ul>\n<h1>\u6570\u7ec4\u7684\u6d45\u62f7\u8d1d<\/h1>\n<h2>\u5c06\u73b0\u6709\u6570\u7ec4\u7684\u6574\u4f53\u6216\u90e8\u5206\u590d\u5236<\/h2>\n<p>java.lang.System\u7c7b\u7684arraycopy()\u65b9\u6cd5<\/p>\n<h2>\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u76f8\u540c\u6570\u7ec4\u5b9e\u4f8b<\/h2>\n<p>\u6570\u7ec4\u5bf9\u8c61\u7684\u514b\u9686\u64cd\u4f5c<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30ad\u30e3\u30b9\u30c8\u4e0d\u8981<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">CloneNotSupportedException\u3082\u30ad\u30e3\u30c3\u30c1\u4e0d\u8981<\/ul>\n<pre class=\"post-pre\"><code><span class=\"kd\">private<\/span> <span class=\"kt\">int<\/span><span class=\"o\">[]<\/span> <span class=\"n\">values<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">setValues<\/span><span class=\"o\">(<\/span><span class=\"kt\">int<\/span><span class=\"o\">[]<\/span> <span class=\"n\">values<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"c1\">\/\/ \u9632\u5fa1\u7684\u30b3\u30d4\u30fc<\/span>\r\n    <span class=\"k\">this<\/span><span class=\"o\">.<\/span><span class=\"na\">values<\/span> <span class=\"o\">=<\/span> <span class=\"n\">values<\/span><span class=\"o\">.<\/span><span class=\"na\">clone<\/span><span class=\"o\">();<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<h2>\u901a\u8fc7\u6307\u5b9a\u5927\u5c0f\u6216\u751f\u6210\u65b0\u7684\u5b50\u6570\u7ec4\u3002<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">java.util.Arrays#copyOf()<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">java.util.Arrays#copyOfRange()<\/ul>\n<h1>\u5c06\u6570\u7ec4\u5217\u8868\u5316<\/h1>\n<p>java.util.Arrays#asList()\u7684\u6c49\u8bed\u672c\u5730\u5316\u8868\u8fbe\u53ea\u6709\u4e00\u4e2a\u9009\u9879 : \u201cjava.util.Arrays#asList()\u201d\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30ea\u30b9\u30c8\u306e\u30b5\u30a4\u30ba\u304c\u5909\u308f\u308b\u64cd\u4f5c\u306f\u4e0d\u53ef(add,remove,clear\u306a\u3069)<\/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\">\u8981\u7d20\u306e\u5024\u304c\u5909\u308f\u308b\u64cd\u4f5c\u306fOK\u3002<\/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\">\u30ea\u30b9\u30c8\u306e\u8981\u7d20\u3092\u5909\u3048\u308b\u3068\u3001\u914d\u5217\u306e\u8981\u7d20\u3082\u5909\u308f\u308b<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u8981\u7d20\u304c\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u306e\u5834\u5408\u306b\u306f\u3001\u53ef\u5909\u5f15\u6570\u3067\u6e21\u3059\u3053\u3068\u306f\u3067\u304d\u308b\u3051\u3069\u3001\u914d\u5217\u3068\u3057\u3066\u6e21\u3059\u3053\u3068\u306f\u3067\u304d\u306a\u3044\u306e\u3067\u6ce8\u610f\u3002<\/ul>\n<h2>\u5bf9\u539f\u59cb\u7c7b\u578b\u6570\u7ec4\u8fdb\u884c\u5217\u8868\u5316\uff08\u63d0\u6848\uff09<\/h2>\n<p>\u6211\u53ef\u4ee5\u4e3a\u5fc5\u8981\u7684\u539f\u59cb\u7c7b\u578b\u6570\u7ec4\u51c6\u5907\u4ee5\u4e0b\u7684\u5b9e\u7528\u65b9\u6cd5\uff0c\u4f46\u662f\u6bcf\u6b21\u90fd\u4f1a\u8fdb\u884c\u81ea\u52a8\u88c5\u7bb1\u64cd\u4f5c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"nc\">List<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">Integer<\/span><span class=\"o\">&gt;<\/span> <span class=\"nf\">asList<\/span><span class=\"o\">(<\/span><span class=\"kd\">final<\/span> <span class=\"kt\">int<\/span><span class=\"o\">[]<\/span> <span class=\"n\">array<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"k\">return<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">AbstractList<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">Integer<\/span><span class=\"o\">&gt;()<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"nd\">@Override<\/span>\r\n        <span class=\"kd\">public<\/span> <span class=\"nc\">Integer<\/span> <span class=\"nf\">get<\/span><span class=\"o\">(<\/span><span class=\"kt\">int<\/span> <span class=\"n\">index<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"k\">return<\/span> <span class=\"n\">array<\/span><span class=\"o\">[<\/span><span class=\"n\">index<\/span><span class=\"o\">];<\/span>\r\n        <span class=\"o\">}<\/span>\r\n\r\n        <span class=\"nd\">@Override<\/span>\r\n        <span class=\"kd\">public<\/span> <span class=\"nc\">Integer<\/span> <span class=\"nf\">set<\/span><span class=\"o\">(<\/span><span class=\"kt\">int<\/span> <span class=\"n\">index<\/span><span class=\"o\">,<\/span> <span class=\"nc\">Integer<\/span> <span class=\"n\">element<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"kt\">int<\/span> <span class=\"n\">oldValue<\/span> <span class=\"o\">=<\/span> <span class=\"n\">array<\/span><span class=\"o\">[<\/span><span class=\"n\">index<\/span><span class=\"o\">];<\/span>\r\n            <span class=\"n\">array<\/span><span class=\"o\">[<\/span><span class=\"n\">index<\/span><span class=\"o\">]<\/span> <span class=\"o\">=<\/span> <span class=\"n\">element<\/span><span class=\"o\">;<\/span>\r\n            <span class=\"k\">return<\/span> <span class=\"n\">oldValue<\/span><span class=\"o\">;<\/span>\r\n        <span class=\"o\">}<\/span>\r\n\r\n        <span class=\"nd\">@Override<\/span>\r\n        <span class=\"kd\">public<\/span> <span class=\"kt\">int<\/span> <span class=\"nf\">size<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"k\">return<\/span> <span class=\"n\">array<\/span><span class=\"o\">.<\/span><span class=\"na\">length<\/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<p>\u6216\u8bb8\u5e94\u8be5\u5b9e\u73b0java.util.RandomAccess\u3002<\/p>\n<h1>\u5c06\u5217\u8868\u8f6c\u6362\u4e3a\u6570\u7ec4<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">java.util.List#toArray()<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">java.util.List#toArray(T[])<\/ul>\n<p>\u8bf7\u6309\u7167\u4ee5\u4e0b\u63cf\u8ff0\u8fdb\u884c\u6c49\u8bed\u7684\u672c\u571f\u5316\u6539\u5199\uff0c\u53ea\u9700\u8981\u4e00\u4e2a\u9009\u9879:<br \/>\n\u4f8b1\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"nc\">List<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">list<\/span> <span class=\"o\">=<\/span> <span class=\"n\">getList<\/span><span class=\"o\">();<\/span>\r\n\r\n<span class=\"c1\">\/\/ \u5f15\u6570\u7121\u3057\u306f Object[] \u3092\u8fd4\u3059<\/span>\r\n<span class=\"nc\">Object<\/span><span class=\"o\">[]<\/span> <span class=\"n\">array<\/span> <span class=\"o\">=<\/span> <span class=\"n\">list<\/span><span class=\"o\">.<\/span><span class=\"na\">toArray<\/span><span class=\"o\">();<\/span>\r\n<\/code><\/pre>\n<p>\u4f8b\uff12\uff1a\u8bf7\u5e2e\u6211\u9884\u5b9a\u4e00\u5f20\u660e\u5929\u4e0b\u53485\u70b9\u7684\u706b\u8f66\u7968\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/ \u5341\u5206\u306a\u30b5\u30a4\u30ba\u306e\u914d\u5217\u3092\u6e21\u305b\u3070\u3001\u305d\u306e\u914d\u5217\u304c\u8fd4\u3063\u3066\u304f\u308b<\/span>\r\n<span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">strings<\/span> <span class=\"o\">=<\/span> <span class=\"n\">list<\/span><span class=\"o\">.<\/span><span class=\"na\">toArray<\/span><span class=\"o\">(<\/span><span class=\"k\">new<\/span> <span class=\"nc\">String<\/span><span class=\"o\">[<\/span><span class=\"n\">list<\/span><span class=\"o\">.<\/span><span class=\"na\">size<\/span><span class=\"o\">()]);<\/span>\r\n<\/code><\/pre>\n<p>\u8bf7\u5e2e\u6211\u628a\u4ee5\u4e0b\u53e5\u5b50\u7528\u4e2d\u6587\u8fdb\u884c\u672c\u5730\u5316\u6539\u5199\uff0c\u53ea\u9700\u8981\u4e00\u4e2a\u7248\u672c\uff1a<\/p>\n<p>\u4f8b\uff13\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">private<\/span> <span class=\"kd\">static<\/span> <span class=\"kd\">final<\/span> <span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"no\">EMPTY_STRINGS<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">String<\/span><span class=\"o\">[<\/span><span class=\"mi\">0<\/span><span class=\"o\">];<\/span>\r\n\r\n<span class=\"c1\">\/\/ ...<\/span>\r\n\r\n<span class=\"c1\">\/\/ \u30b5\u30a4\u30ba\u304c\u8db3\u308a\u306a\u3044\u5834\u5408\u306b\u306f\u3001\u65b0\u3057\u3044\u914d\u5217\u3092\u751f\u6210\u3057\u3066\u8fd4\u3057\u3066\u304f\u308c\u308b<\/span>\r\n<span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">strings<\/span> <span class=\"o\">=<\/span> <span class=\"n\">list<\/span><span class=\"o\">.<\/span><span class=\"na\">toArray<\/span><span class=\"o\">(<\/span><span class=\"no\">EMPTY_STRINGS<\/span><span class=\"o\">);<\/span>\r\n<\/code><\/pre>\n<h1>\u5c06\u6570\u7ec4\u548c\u6d41\u8fdb\u884c\u76f8\u4e92\u8f6c\u6362\u3002<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">java.util.Arrays#stream() &#8211; \u914d\u5217\u306e\u30b9\u30c8\u30ea\u30fc\u30e0\u5316<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">java.util.stream.Stream#toArray() &#8211; \u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u914d\u5217\u5316<\/ul>\n<p>\u8fd8\u6709\u9488\u5bf9\u539f\u59cb\u7c7b\u578b\u7684\u652f\u6301\uff0c\u4f8b\u5982IntStream\uff03toArray()\u7b49\u3002<\/p>\n<h1>\u53cd\u601d<\/h1>\n<p>\u4f3c\u4e4e\u4e0d\u80fd\u901a\u8fc7Class#getDeclaredFields()\u6216Class#getDeclaredMethods()\u7b49\u65b9\u6cd5\u83b7\u53d6\u6570\u7ec4\u5bf9\u8c61\u7684length\u5b57\u6bb5\u6216clone()\u65b9\u6cd5\u3002<\/p>\n<p>\u4e0d\u8fc7\uff0c\u4e3a\u4e86\u5904\u7406\u6570\u7ec4\u53cd\u5c04\uff0c\u53ef\u4ee5\u4f7f\u7528 java.lang.reflect.Array \u7c7b\u3002<\/p>\n<h2>\u5224\u65ad\u5bf9\u8c61\u662f\u5426\u4e3a\u6570\u7ec4\u3002<\/h2>\n<p>java.lang.Class\u7684isArray()<\/p>\n<h2>\u83b7\u53d6\u6570\u7ec4\u5143\u7d20\u7684\u7c7b\u578b<\/h2>\n<p>java.lang.Class\u7c7b\u7684getComponentType()\u65b9\u6cd5<\/p>\n<h2>\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6<\/h2>\n<p>java.lang.reflect.Array#getLength() \u7684\u542b\u4e49\u662f\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\u3002<\/p>\n<h2>\u83b7\u53d6\u3001\u8bbe\u7f6e\u6570\u7ec4\u7684\u5143\u7d20<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">java.lang.reflect.Array#get()<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">java.lang.reflect.Array#set()<\/ul>\n<p>\u4f7f\u7528get()\u548cset()\u65b9\u6cd5\u5904\u7406\u539f\u59cb\u7c7b\u578b\u4f1a\u81ea\u52a8\u8fdb\u884c\u88c5\u7bb1\u548c\u62c6\u7bb1\u3002<br \/>\n\u8fd8\u6709\u4e00\u4e9b\u7528\u4e8e\u5904\u7406\u539f\u59cb\u7c7b\u578b\u7684getInt()\u3001getLong()\u3001setInt()\u3001setLong()\u7b49\u65b9\u6cd5\u3002<\/p>\n<h2>\u751f\u6210\u4e00\u4e2a\u6570\u7ec4<\/h2>\n<p>\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u6570\u7ec4\u5b9e\u4f8b\u3002<\/p>\n<h1>\u5c06\u6570\u7ec4\u8f6c\u5316\u4e3a\u5b57\u7b26\u4e32<\/h1>\n<p>\u5982\u679c\u60f3\u8981\u663e\u793a\u6570\u7ec4\u7684\u5185\u5bb9\u7b49\u60c5\u51b5\uff0c\u53ef\u4ee5\u4f7f\u7528java.util.Arrays\u7c7b\u7684\u65b9\u6cd5\uff0c\u5176toString()\u65b9\u6cd5\u4e0eObject\u7c7b\u7684\u76f8\u540c\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">1\u6b21\u5143\u914d\u5217<\/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\">java.util.Arrays#toString()<\/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\">\u591a\u6b21\u5143\u914d\u5217<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">java.util.Arrays#deepToString()<\/ul>\n<p>\u5982\u679c\u4f20\u9012\u7ed9 deepToString() \u7684\u6570\u7ec4\u5bf9\u8c61\u662f\u4e00\u4e2a\u5177\u6709\u81ea\u6211\u5faa\u73af\u5f15\u7528\u7684\u6570\u7ec4\uff0c\u5219\u53ef\u80fd\u4f1a\u53d1\u751f\u4e25\u91cd\u95ee\u9898\uff08\u5982\u5806\u6808\u6ea2\u51fa\u3001\u65e0\u9650\u5faa\u73af\u7b49\uff09\u3002<\/p>\n<h1>\u6392\u5e8f<\/h1>\n<p>\u5728Java\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7`java.util.Arrays`\u7c7b\u7684\u65b9\u6cd5\u6765\u8fdb\u884c\u6392\u5e8f\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">java.util.Arrays#sort()<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">java.util.Arrays#parallelSort()<\/ul>\n<h1>\u6df7\u5408<\/h1>\n<p>\u4f7f\u7528java.util.Arrays\uff03asList\uff08\uff09\u548cjava.util.Colllections\uff03shuffle\uff08\uff09\u53ef\u4ee5\u5b9e\u73b0\u4e0e\u6392\u5e8f\u7c7b\u4f3c\u7684\u529f\u80fd\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nc\">List<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">list<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">Arrays<\/span><span class=\"o\">.<\/span><span class=\"na\">asList<\/span><span class=\"o\">(<\/span><span class=\"n\">array<\/span><span class=\"o\">);<\/span>\r\n<span class=\"nc\">Collections<\/span><span class=\"o\">.<\/span><span class=\"na\">shuffle<\/span><span class=\"o\">(<\/span><span class=\"n\">list<\/span><span class=\"o\">);<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u662f\u539f\u59cb\u7c7b\u578b\uff0c\u53ef\u80fd\u53ea\u80fd\u81ea\u884c\u52aa\u529b\u4e86\u3002<\/p>\n<h1>\u5176\u4ed6<\/h1>\n<p>\u5176\u4ed6\u5b9e\u7528\u65b9\u6cd5\u57fa\u672c\u4e0a\u90fd\u5728 java.util.Arrays \u7c7b\u4e2d\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">fill : \u5024\u57cb\u3081<\/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\">equals : \u4e00\u81f4\u30c1\u30a7\u30c3\u30af<\/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\">deepEquals : \u30cd\u30b9\u30c8\u914d\u5217\u306e\u4e00\u81f4\u30c1\u30a7\u30c3\u30af<\/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\">binarySearch : \u30d0\u30a4\u30ca\u30ea\u30b5\u30fc\u30c1(\u30bd\u30fc\u30c8\u6e08\u307f\u3067\u3042\u308b\u5fc5\u8981\u3042\u308a)<\/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\">hashCode : \u30cf\u30c3\u30b7\u30e5\u5024\u8a08\u7b97<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">deepHashCode : \u30cd\u30b9\u30c8\u914d\u5217\u306e\u30cf\u30c3\u30b7\u30e5\u5024\u8a08\u7b97<\/ul>\n<p>\u5982\u679c\u9700\u8981\u7684\u8bdd\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0a\u8ff0\u7684Arrays#equals()\u6216Arrays#hashCode()\u65b9\u6cd5\uff0c\u56e0\u4e3a\u914d\u5217\u5bf9\u8c61\u7684equals()\u548chashCode()\u4e0eObject\u7c7b\u7684\u5b9e\u73b0\u76f8\u540c\u3002<\/p>\n<p>\u800c\u5bf9\u4e8e deep\uff5e() \u7cfb\u5217\u65b9\u6cd5\u6765\u8bf4\uff0c\u9700\u8981\u786e\u4fdd\u4e0d\u4f20\u9012\u81ea\u5df1\u5faa\u73af\u5f15\u7528\u7684\u53c2\u6570\u3002<\/p>\n<h1>\u6570\u7ec4\u7c7b\u7684\u540d\u79f0<\/h1>\n<p>\u5c1d\u8bd5\u83b7\u53d6\u6570\u7ec4\u7c7b\u7684\u5404\u79cd\u540d\u79f0\u540e\uff0c\u53ef\u4ee5\u5f97\u5230\u4ee5\u4e0b\u611f\u89c9\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"nc\">Integer<\/span><span class=\"o\">[][]<\/span> <span class=\"n\">array<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">Integer<\/span><span class=\"o\">[<\/span><span class=\"mi\">0<\/span><span class=\"o\">][<\/span><span class=\"mi\">0<\/span><span class=\"o\">];<\/span>\r\n<span class=\"nc\">Class<\/span><span class=\"o\">&lt;?&gt;<\/span> <span class=\"n\">clazz<\/span> <span class=\"o\">=<\/span> <span class=\"n\">array<\/span><span class=\"o\">.<\/span><span class=\"na\">getClass<\/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\">\"Name         : \"<\/span> <span class=\"o\">+<\/span> <span class=\"n\">clazz<\/span><span class=\"o\">.<\/span><span class=\"na\">getName<\/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\">\"SimpleName   : \"<\/span> <span class=\"o\">+<\/span> <span class=\"n\">clazz<\/span><span class=\"o\">.<\/span><span class=\"na\">getSimpleName<\/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\">\"CanonicalName: \"<\/span> <span class=\"o\">+<\/span> <span class=\"n\">clazz<\/span><span class=\"o\">.<\/span><span class=\"na\">getCanonicalName<\/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\">\"TypeName     : \"<\/span> <span class=\"o\">+<\/span> <span class=\"n\">clazz<\/span><span class=\"o\">.<\/span><span class=\"na\">getTypeName<\/span><span class=\"o\">());<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code>Name         : [[Ljava.lang.Integer;\r\nSimpleName   : Integer[][]\r\nCanonicalName: java.lang.Integer[][]\r\nTypeName     : java.lang.Integer[][]\r\n<\/code><\/pre>\n<h1>\u4e00\u4e2a\u957f\u5ea6\u4e3a0\u7684\u6570\u7ec4\u3002<\/h1>\n<p>\u901a\u5e38\uff0c\u6570\u7ec4\u662f\u53ef\u4fee\u6539\u7684\u5bf9\u8c61\uff0c\u5373\u4f7f\u5c06\u5176\u58f0\u660e\u4e3afinal\u4e5f\u53ef\u4ee5\u8fdb\u884c\u4fee\u6b63\u3002<\/p>\n<p>\u7136\u800c\uff0c\u7531\u4e8e\u6ca1\u6709\u53ef\u66f4\u6539\u7684\u90e8\u5206\uff0c\u96f6\u4e2a\u6570\u7ec4\u662f\u4e00\u4e2a\u4e0d\u53ef\u53d8\u7684\u5bf9\u8c61\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u5c06\u5176\u89c6\u4e3a\u5e38\u91cf\uff0c\u4e5f\u53ef\u4ee5\u5728\u591a\u7ebf\u7a0b\u4e2d\u5171\u4eab\u4f7f\u7528\u800c\u6ca1\u6709\u95ee\u9898\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">private<\/span> <span class=\"kd\">static<\/span> <span class=\"kd\">final<\/span> <span class=\"nc\">Object<\/span><span class=\"o\">[]<\/span> <span class=\"no\">EMPTY_OBJS<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">Object<\/span><span class=\"o\">[<\/span><span class=\"mi\">0<\/span><span class=\"o\">];<\/span>\r\n<\/code><\/pre>\n<h1>\u4f4d\u6216\u5e03\u5c14\u503c\u6570\u7ec4<\/h1>\n<p>\u5e94\u8be5\u8bf4 java.util.BitSet \u7684\u5185\u5b58\u6548\u7387\u66f4\u597d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u76ee\u6807 \u7531\u4e8e\u5bf9Java\u6570\u7ec4\u7684\u5904\u7406\u65b9\u6cd5\u5206\u5e03\u5728\u591a\u4e2a\u7c7b\u4e2d\uff0c\u56e0\u6b64\u9700\u8981\u6574\u7406\u4e00\u4e0b\u3002 \u8fd9\u91cc\u4e0d\u4f1a\u5bf9\u6bcf\u4e2a\u65b9\u6cd5\u8fdb\u884c\u8be6\u7ec6\u89e3\u91ca\u3002 \u57fa\u672c\u7684 [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-31714","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin 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