{"id":31653,"date":"2023-12-09T23:50:13","date_gmt":"2023-08-26T03:40:14","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8java%e4%b8%ad%e4%bd%bf%e7%94%a8%e4%ba%ab%e5%85%83%e6%a8%a1%e5%bc%8f\/"},"modified":"2024-05-04T12:52:40","modified_gmt":"2024-05-04T04:52:40","slug":"%e5%9c%a8java%e4%b8%ad%e4%bd%bf%e7%94%a8%e4%ba%ab%e5%85%83%e6%a8%a1%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8java%e4%b8%ad%e4%bd%bf%e7%94%a8%e4%ba%ab%e5%85%83%e6%a8%a1%e5%bc%8f\/","title":{"rendered":"\u5728Java\u4e2d\u4f7f\u7528\u4eab\u5143\u6a21\u5f0f"},"content":{"rendered":"

\u9996\u5148<\/h1>\n

\u6211\u5c06\u603b\u7ed3\u6211\u901a\u8fc7\u9605\u8bfb\u7684\u300a\u5897\u88dc\u6539\u8a02\u7248 Java\u8a00\u8a9e\u3067\u5b66\u3076\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u5165\u9580\u300b\uff0c\u8be5\u4e66\u4ecb\u7ecd\u4e86GoF\u8bbe\u8ba1\u6a21\u5f0f\u7684\u5185\u5bb9\u3002<\/p>\n

Flyweight\u6a21\u5f0f<\/h1>\n

“Flyweight” \u662f\u4ec0\u4e48\u610f\u601d\uff1f<\/h2>\n

\u5728\u62f3\u51fb\u4e2d\uff0c\u8f7b\u91cf\u7ea7\u6307\u7684\u662f\u201c\u8747\u91cf\u7ea7\u201d\u3002\u8f7b\u91cf\u7ea7\u610f\u5473\u7740\u201c\u8f7b\u5de7\u201d\uff0c\u6307\u7684\u662f\u6d88\u8017\u5185\u5b58\u8f83\u5c11\u7684\u60c5\u51b5\u3002\u5728\u521b\u5efa\u5bf9\u8c61\u65f6\uff0c\u9700\u8981\u4f7f\u7528new\u6765\u5206\u914d\u5185\u5b58\uff08\u5b9e\u4f8b\u5316\uff09\uff0c\u4f46\u662f\u5982\u679c\u521b\u5efa\u4e86\u5927\u91cf\u7684\u5bf9\u8c61\uff0c\u4f1a\u6d88\u8017\u5927\u91cf\u7684\u5185\u5b58\uff0c\u5bfc\u81f4\u5904\u7406\u901f\u5ea6\u53d8\u6162\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u6700\u597d\u80fd\u591f\u91cd\u590d\u4f7f\u7528\u5df2\u7ecf\u5b9e\u4f8b\u5316\u7684\u5bf9\u8c61\u3002\u901a\u8fc7\u5c3d\u91cf\u4e0d\u901a\u8fc7new\u6765\u5171\u4eab\u5bf9\u8c61\u6765\u51cf\u5c11\u5185\u5b58\u6d88\u8017\u7684\u6a21\u5f0f\u88ab\u79f0\u4e3a\u4eab\u5143\u6a21\u5f0f\u3002<\/p>\n

\u767b\u573a\u7684\u89d2\u8272<\/h2>\n
\"image.png\"<\/div>\n

\u5b9e\u73b0\u7c7b<\/h3>\n
    \n
  • \n
      Flyweight<\/ul>\n<\/li>\n<\/ul>\n

       <\/p>\n

        \n
      • \n
          \u5171\u6709\u3057\u3066\u5229\u7528\u3059\u308b\u30af\u30e9\u30b9\u3092\u8868\u3057\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n

           <\/p>\n

            \n
          • \n
              \u5b9f\u88c5\u3059\u3079\u304d\u30e1\u30bd\u30c3\u30c9\u306a\u3069\u306f\u7279\u306b\u3042\u308a\u307e\u305b\u3093\u306e\u3067\u3001\u96e3\u3057\u3044\u70b9\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/ul>\n<\/li>\n<\/ul>\n

               <\/p>\n

                \n
              • \n
                  FlyweightFactory<\/ul>\n<\/li>\n<\/ul>\n

                   <\/p>\n

                    \n
                  • \n
                      Flyweight\u3092\u751f\u6210\u3059\u308b\u305f\u3081\u306e\u5de5\u5834\u5f79\u3068\u306a\u308b\u30af\u30e9\u30b9\u3067\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n

                       <\/p>\n

                        \n
                      • \n
                          \u3053\u306e\u5de5\u5834\u5f79\u3092\u901a\u3057\u3066Flyweight\u5f79\u3092\u4f5c\u308b\u3068\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u5171\u6709\u3067\u304d\u308b\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3061\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n

                           <\/p>\n

                            \n
                          • \n
                              \u5171\u6709\u3059\u308b\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u683c\u7d0d\u3059\u308bpool\u30d5\u30a3\u30fc\u30eb\u30c9\u3068\u3001Flyweight\u3092\u53d6\u5f97\u3059\u308b\u305f\u3081\u306egetFlyewight\u30e1\u30bd\u30c3\u30c9\u3092\u6301\u3061\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n

                               <\/p>\n

                                \n
                              • \n
                                  Client<\/ul>\n<\/li>\n<\/ul>\n

                                   <\/p>\n

                                    \n
                                  • \n
                                      FlyweightFactory\u3092\u5229\u7528\u3057\u3066Flyweight\u3092\u5229\u7528\u3059\u308b\u30af\u30e9\u30b9\u3067\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n

                                       <\/p>\n

                                        Flyweight\u3068\u540c\u69d8\u306b\u5b9f\u88c5\u3059\u3079\u304d\u30e1\u30bd\u30c3\u30c9\u306a\u3069\u306f\u7279\u306b\u5b9a\u307e\u3089\u308c\u3066\u3044\u306a\u3044\u305f\u3081\u3001\u96e3\u3057\u3044\u70b9\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/ul>\n

                                        \u5177\u4f53\u7684\u4f8b\u5b50<\/h2>\n
                                        \"image.png\"<\/div>\n

                                        \u5b9e\u73b0\u7c7b<\/h3>\n

                                        Stamp\u30af\u30e9\u30b9<\/p>\n

                                        package<\/span> sample<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> Stamp<\/span> {<\/span>\r\n    \/\/ \u6587\u5b57<\/span>\r\n    private<\/span> char<\/span> charname<\/span>;<\/span>\r\n    \/\/ \u5229\u7528\u56de\u6570<\/span>\r\n    private<\/span> int<\/span> useCount<\/span> =<\/span> 0<\/span>;<\/span>\r\n    \/\/ \u751f\u6210\u56de\u6570<\/span>\r\n    private<\/span> int<\/span> newCount<\/span> =<\/span> 0<\/span>;<\/span>\r\n\r\n    public<\/span> int<\/span> getUseCount<\/span>()<\/span> {<\/span>\r\n        return<\/span> useCount<\/span>;<\/span>\r\n    }<\/span>\r\n\r\n    public<\/span> void<\/span> setUseCount<\/span>(<\/span>int<\/span> useCount<\/span>)<\/span> {<\/span>\r\n        this<\/span>.<\/span>useCount<\/span> =<\/span> useCount<\/span>;<\/span>\r\n    }<\/span>\r\n\r\n    public<\/span> int<\/span> getNewCount<\/span>()<\/span> {<\/span>\r\n        return<\/span> newCount<\/span>;<\/span>\r\n    }<\/span>\r\n\r\n    public<\/span> void<\/span> setNewCount<\/span>(<\/span>int<\/span> newCount<\/span>)<\/span> {<\/span>\r\n        this<\/span>.<\/span>newCount<\/span> =<\/span> newCount<\/span>;<\/span>\r\n    }<\/span>\r\n\r\n    \/\/ \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf<\/span>\r\n    public<\/span> Stamp<\/span>(<\/span>char<\/span> charname<\/span>)<\/span> {<\/span>\r\n        this<\/span>.<\/span>charname<\/span> =<\/span> charname<\/span>;<\/span>\r\n    }<\/span>\r\n\r\n    \/\/ \u6587\u5b57\u3092\u8868\u793a\u3059\u308b<\/span>\r\n    public<\/span> void<\/span> print<\/span>()<\/span> {<\/span>\r\n        System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"charname:\"<\/span> +<\/span> this<\/span>.<\/span>charname<\/span>);<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                                        Stamp\u7c7b\u662f\u4e00\u4e2a\u7528\u4e8e\u5171\u4eab\u548c\u4f7f\u7528\u7684Flyweight\u89d2\u8272\u7684\u7c7b\u3002
                                        \n\u5b83\u63a5\u6536\u5b57\u7b26charname\u5e76\u751f\u6210\u4e00\u4e2a\u5b57\u7b26\uff0c\u7136\u540e\u901a\u8fc7print\u65b9\u6cd5\u663e\u793a\u8be5\u5b57\u7b26\u3002
                                        \n\u6b64\u5916\uff0c\u4e3a\u4e86\u65b9\u4fbf\u7406\u89e3\uff0c\u5b83\u8fd8\u5177\u6709\u8bb0\u5f55\u4f7f\u7528\u6b21\u6570\uff08useCount\uff09\u548c\u751f\u6210\u6b21\u6570\uff08newCount\uff09\u7684\u5b57\u6bb5\uff0c\u4f46\u8fd9\u5e76\u975e\u5fc5\u9700\u3002<\/p>\n
                                        StampFactory\u30af\u30e9\u30b9<\/p>\n
                                        package<\/span> sample<\/span>;<\/span>\r\n\r\nimport<\/span> java.util.HashMap<\/span>;<\/span>\r\nimport<\/span> java.util.Map.Entry<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> StampFactory<\/span> {<\/span>\r\n    \/\/ \u65e2\u306b\u751f\u6210\u3057\u305fStamp\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u7ba1\u7406<\/span>\r\n    private<\/span> HashMap<\/span><<\/span>String<\/span>,<\/span> Stamp<\/span>><\/span> pool<\/span> =<\/span> new<\/span> HashMap<\/span><>();<\/span>\r\n    \/\/ Singleton\u30d1\u30bf\u30fc\u30f3<\/span>\r\n    private<\/span> static<\/span> StampFactory<\/span> singleton<\/span> =<\/span> new<\/span> StampFactory<\/span>();<\/span>\r\n\r\n    \/\/ \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf<\/span>\r\n    private<\/span> StampFactory<\/span>()<\/span> {<\/span>\r\n    }<\/span>\r\n\r\n    \/\/ \u30b7\u30f3\u30b0\u30eb\u30c8\u30f3\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u53d6\u5f97<\/span>\r\n    public<\/span> static<\/span> StampFactory<\/span> getInstance<\/span>()<\/span> {<\/span>\r\n        return<\/span> singleton<\/span>;<\/span>\r\n    }<\/span>\r\n\r\n    \/\/ Stamp\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u751f\u6210(\u5171\u6709)<\/span>\r\n    public<\/span> synchronized<\/span> Stamp<\/span> getStamp<\/span>(<\/span>char<\/span> charname<\/span>)<\/span> {<\/span>\r\n        \/\/ \u30ad\u30fc(\u6587\u5b57)\u306b\u7d10\u3065\u304f\u5024(Stamp\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9)\u3092\u53d6\u5f97\u3059\u308b<\/span>\r\n        Stamp<\/span> bc<\/span> =<\/span> pool<\/span>.<\/span>get<\/span>(<\/span>\"\"<\/span> +<\/span> charname<\/span>);<\/span>\r\n        \/\/ \u30ad\u30fc(\u6587\u5b57)\u306b\u7d10\u3065\u304f\u5024(Stamp\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9)\u304c\u53d6\u5f97\u3067\u304d\u306a\u304b\u3063\u305f\u5834\u5408<\/span>\r\n        if<\/span> (<\/span>bc<\/span> ==<\/span> null<\/span>)<\/span> {<\/span>\r\n            \/\/ \u3053\u3053\u3067Stamp\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u751f\u6210<\/span>\r\n            bc<\/span> =<\/span> new<\/span> Stamp<\/span>(<\/span>charname<\/span>);<\/span>\r\n            \/\/ new\u3057\u305f\u56de\u6570\u3092\u30ab\u30a6\u30f3\u30c8<\/span>\r\n            bc<\/span>.<\/span>setNewCount<\/span>(<\/span>bc<\/span>.<\/span>getNewCount<\/span>()<\/span> +<\/span> 1<\/span>);<\/span>\r\n            \/\/ HashMap\u306b\u683c\u7d0d<\/span>\r\n            pool<\/span>.<\/span>put<\/span>(<\/span>\"\"<\/span> +<\/span> charname<\/span>,<\/span> bc<\/span>);<\/span>\r\n        }<\/span>\r\n        \/\/ new\u306e\u6709\u7121\u306b\u304b\u304b\u308f\u3089\u305a\u5229\u7528\u3057\u305f\u56de\u6570\u3092\u30ab\u30a6\u30f3\u30c8<\/span>\r\n        bc<\/span>.<\/span>setUseCount<\/span>(<\/span>bc<\/span>.<\/span>getUseCount<\/span>()<\/span> +<\/span> 1<\/span>);<\/span>\r\n        return<\/span> bc<\/span>;<\/span>\r\n    }<\/span>\r\n\r\n    \/\/ HashMap\u304c\u7ba1\u7406\u3057\u3066\u3044\u308bStamp\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u5168\u4ef6\u51fa\u529b<\/span>\r\n    public<\/span> void<\/span> printAllPool<\/span>()<\/span> {<\/span>\r\n        for<\/span> (<\/span>Entry<\/span><<\/span>String<\/span>,<\/span> Stamp<\/span>><\/span> entry<\/span> :<\/span> pool<\/span>.<\/span>entrySet<\/span>())<\/span> {<\/span>\r\n            System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\r\n                    entry<\/span>.<\/span>getKey<\/span>()<\/span> +<\/span> \" : \"<\/span> +<\/span> entry<\/span>.<\/span>getValue<\/span>().<\/span>getUseCount<\/span>()<\/span> +<\/span> \" : \"<\/span> +<\/span> entry<\/span>.<\/span>getValue<\/span>().<\/span>getNewCount<\/span>());<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                                        FlayweightFactory\u662f\u4e00\u4e2a\u7528\u4e8e\u521b\u5efaStamp\u7c7b\u7684\u5de5\u5382\u7c7b\u3002
                                        \n\u5b83\u6709\u4e00\u4e2a\u7528\u4e8e\u7ba1\u7406\u751f\u6210\u7684\u5b9e\u4f8b\u7684Map\u5b57\u6bb5pool\uff0c\u4ee5\u53ca\u4e00\u4e2a\u7528\u4e8e\u8868\u793a\u81ea\u8eab\u7684singleton\u5b57\u6bb5\uff0c\u7531\u4e8e\u5e94\u7528\u4e86Singleton\u6a21\u5f0f\u3002
                                        \n\u4f5c\u4e3a\u8fd9\u4e2a\u7c7b\u7684\u4f7f\u7528\u65b9\u6cd5\uff0c\u9996\u5148\u4ece\u5916\u90e8\u8c03\u7528getInstance\u65b9\u6cd5\u4ee5\u8fd4\u56de\u8868\u793a\u81ea\u8eab\u7684StampFactory\u5b9e\u4f8b\u3002
                                        \n\u7136\u540e\u5bf9\u8fd4\u56de\u7684StampFactory\u5b9e\u4f8b\u8c03\u7528getStamp\u65b9\u6cd5\uff0c\u53c2\u6570\u4e3acharname\u3002
                                        \n\u5982\u679c\u5df2\u7ecf\u751f\u6210\u4e86\u4e0e\u4f20\u5165\u7684charname\u4f5c\u4e3a\u952e\u503c\u5bf9\u5e94\u7684Stamp\u5b9e\u4f8b\uff0c\u5c31\u4ecepool\u4e2d\u83b7\u53d6\uff1b\u5982\u679c\u5c1a\u672a\u751f\u6210\u5b9e\u4f8b\uff0c\u5219\u751f\u6210\u65b0\u7684\u5b9e\u4f8b\u5e76\u5b58\u50a8\u5230pool\u4e2d\u3002
                                        \n\u6b64\u5916\uff0c\u5982\u679c\u751f\u6210\u4e86\u5b9e\u4f8b\uff0c\u5219\u5c06newCount\u52a01\uff0c\u5e76\u5c06useCount\u52a01\u4ee5\u8ba1\u7b97\u6bcf\u4e2aStamp\u5b9e\u4f8b\u7684\u751f\u6210\u548c\u4f7f\u7528\u6b21\u6570\u3002
                                        \n\u6b64\u5916\uff0c\u8fd8\u5b9e\u73b0\u4e86\u4e00\u4e2aprintAllPool\u65b9\u6cd5\uff0c\u7528\u4e8e\u8f93\u51fa\u5b58\u50a8\u5728pool\u4e2d\u7684\u6240\u6709Stamp\u5b9e\u4f8b\u3002
                                        \n\u8f93\u51fa\u5185\u5bb9\u4e3a\u201c\u952e\u503c\u5b57\u7b26\uff1a\u4f7f\u7528\u6b21\u6570\uff1a\u751f\u6210\u6b21\u6570\u201d\u3002<\/p>\n
                                        \u6267\u884c\u7c7b<\/h3>\n
                                        Main\u30af\u30e9\u30b9<\/p>\n
                                        package<\/span> sample<\/span>;<\/span>\r\n\r\nimport<\/span> java.util.ArrayList<\/span>;<\/span>\r\n\r\npublic<\/span> class<\/span> Main<\/span> {<\/span>\r\n    public<\/span> static<\/span> void<\/span> main<\/span>(<\/span>String<\/span>[]<\/span> args<\/span>)<\/span> {<\/span>\r\n        \/\/ Stamp\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u6e96\u5099<\/span>\r\n        StampFactory<\/span> factory<\/span> =<\/span> StampFactory<\/span>.<\/span>getInstance<\/span>();<\/span>\r\n        ArrayList<\/span><<\/span>Stamp<\/span>><\/span> stamps<\/span> =<\/span> new<\/span> ArrayList<\/span><>();<\/span>\r\n        stamps<\/span>.<\/span>add<\/span>(<\/span>factory<\/span>.<\/span>getStamp<\/span>(<\/span>'a'<\/span>));<\/span>\r\n        stamps<\/span>.<\/span>add<\/span>(<\/span>factory<\/span>.<\/span>getStamp<\/span>(<\/span>'b'<\/span>));<\/span>\r\n        stamps<\/span>.<\/span>add<\/span>(<\/span>factory<\/span>.<\/span>getStamp<\/span>(<\/span>'c'<\/span>));<\/span>\r\n        stamps<\/span>.<\/span>add<\/span>(<\/span>factory<\/span>.<\/span>getStamp<\/span>(<\/span>'f'<\/span>));<\/span>\r\n        stamps<\/span>.<\/span>add<\/span>(<\/span>factory<\/span>.<\/span>getStamp<\/span>(<\/span>'e'<\/span>));<\/span>\r\n        stamps<\/span>.<\/span>add<\/span>(<\/span>factory<\/span>.<\/span>getStamp<\/span>(<\/span>'a'<\/span>));<\/span>\r\n        stamps<\/span>.<\/span>add<\/span>(<\/span>factory<\/span>.<\/span>getStamp<\/span>(<\/span>'b'<\/span>));<\/span>\r\n        stamps<\/span>.<\/span>add<\/span>(<\/span>factory<\/span>.<\/span>getStamp<\/span>(<\/span>'c'<\/span>));<\/span>\r\n        stamps<\/span>.<\/span>add<\/span>(<\/span>factory<\/span>.<\/span>getStamp<\/span>(<\/span>'d'<\/span>));<\/span>\r\n        stamps<\/span>.<\/span>add<\/span>(<\/span>factory<\/span>.<\/span>getStamp<\/span>(<\/span>'f'<\/span>));<\/span>\r\n        stamps<\/span>.<\/span>add<\/span>(<\/span>factory<\/span>.<\/span>getStamp<\/span>(<\/span>'a'<\/span>));<\/span>\r\n        for<\/span> (<\/span>Stamp<\/span> s<\/span> :<\/span> stamps<\/span>)<\/span> {<\/span>\r\n            s<\/span>.<\/span>print<\/span>();<\/span>\r\n        }<\/span>\r\n        System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"-------------------------------\"<\/span>);<\/span>\r\n        System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>\"charname : useCount : newCount\"<\/span>);<\/span>\r\n        \/\/ HashMap\u3067\u7ba1\u7406\u3055\u308c\u3066\u3044\u308bStamp\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u5168\u4ef6\u51fa\u529b<\/span>\r\n        factory<\/span>.<\/span>printAllPool<\/span>();<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
                                        \u8fd9\u4e2a\u7c7b\u662f\u4f7f\u7528Flyweight\u548cFlyweightFactory\u7684Client\u89d2\u8272\u7c7b\u3002
                                        \n\u901a\u8fc7StampFactory\u7c7b\u7684static\u65b9\u6cd5getInstance\u8c03\u7528getInstance\u65b9\u6cd5\u6765\u83b7\u53d6stampFactory\u5b9e\u4f8b\uff0c\u5e76\u5bf9\u83b7\u53d6\u7684stampFactory\u5b9e\u4f8b\u8c03\u7528getStamp\u65b9\u6cd5\uff0c\u4ece\u800c\u5c06stamp\u5b9e\u4f8b\u5b58\u50a8\u5230pool\u5b57\u6bb5\u4e2d\u3002
                                        \n\u6700\u540e\u901a\u8fc7\u8c03\u7528printAllPool()\u65b9\u6cd5\u6765\u8f93\u51fapool\u5b57\u6bb5\u7684\u6240\u6709\u6570\u636e\u3002<\/p>\n
                                        \u6267\u884c\u7ed3\u679c<\/h3>\n
                                        \u8fd0\u884cMain.java\u7684\u7ed3\u679c\u5982\u4e0b\u6240\u793a\u3002\u901a\u8fc7\u5bf9\u4e8euseCount\u5927\u4e8e1\u7684\u5b57\u6bcd\u6765\u770b\uff0c\u6211\u4eec\u53ef\u4ee5\u53d1\u73b0newCount\u53ea\u51fa\u73b0\u4e86\u4e00\u6b21\uff0c\u8bf4\u660e\u5b9e\u4f8b\u88ab\u91cd\u590d\u5229\u7528\u4e86\u4e00\u6b21\u3002<\/p>\n
                                        charname:a\r\ncharname:b\r\ncharname:c\r\ncharname:f\r\ncharname:e\r\ncharname:a\r\ncharname:b\r\ncharname:c\r\ncharname:d\r\ncharname:f\r\ncharname:a\r\n-------------------------------\r\ncharname : useCount : newCount\r\na : 3 : 1\r\nb : 2 : 1\r\nc : 2 : 1\r\nd : 1 : 1\r\ne : 1 : 1\r\nf : 2 : 1\r\n<\/code><\/pre>\n
                                        \u4f18\u70b9\u548c\u7f3a\u70b9<\/h2>\n
                                        \u4f7f\u7528\u4eab\u5143\u6a21\u5f0f\u53ef\u4ee5\u51cf\u5c11\u521b\u5efa\u5bf9\u8c61\u7684\u6b21\u6570\uff0c\u8282\u7ea6\u5185\u5b58\u3002\u7136\u800c\uff0c\u5b58\u50a8\u5728\u6c60\u4e2d\u7684\u5bf9\u8c61\u4e0d\u4f1a\u6210\u4e3a\u5783\u573e\u6536\u96c6\u7684\u76ee\u6807\uff0c\u4f1a\u4e00\u76f4\u5360\u7528\u5185\u5b58\uff0c\u56e0\u6b64\u9700\u8981\u6709\u610f\u8bc6\u5730\u7ba1\u7406\u4ee5\u907f\u514d\u5185\u5b58\u4e0d\u8db3\u7684\u95ee\u9898\u3002<\/p>\n
                                        \u603b\u7ed3<\/h1>\n
                                        \u6211\u5b66\u4e60\u4e86\u4f7f\u7528\u4eab\u5143\u6a21\u5f0f\u6765\u5171\u4eab\u5b9e\u4f8b\u4ee5\u51cf\u5c11\u5185\u5b58\u6d88\u8017\u7684\u77e5\u8bc6\u3002\u5982\u679c\u60a8\u611f\u5174\u8da3\u7684\u8bdd\uff0c\u6211\u5728\u4e0b\u9762\u63d0\u4f9b\u4e86\u6837\u4f8b\u4ee3\u7801\u4f9b\u53c2\u8003\u3002<\/p>\n
                                          Flyweight\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<\/ul>\n
                                          \u53e6\u5916\uff0c\u5173\u4e8e\u5176\u4ed6\u8bbe\u8ba1\u6a21\u5f0f\uff0c\u6211\u4e5f\u5728\u4e0b\u9762\u8fdb\u884c\u4e86\u603b\u7ed3\uff0c\u4f9b\u60a8\u53c2\u8003\u3002<\/p>\n
                                            [\u968f\u6642\u66f4\u65b0]Java\u3067\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u307e\u3068\u3081<\/ul>\n
                                            \u8bf7\u63d0\u4f9b\u6587\u732e\u53c2\u8003.<\/h1>\n
                                              \u5897\u88dc\u6539\u8a02\u7248 Java\u8a00\u8a9e\u3067\u5b66\u3076\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u5165\u9580<\/ul>\n","protected":false},"excerpt":{"rendered":"
                                              \u9996\u5148 \u6211\u5c06\u603b\u7ed3\u6211\u901a\u8fc7\u9605\u8bfb\u7684\u300a\u5897\u88dc\u6539\u8a02\u7248 Java\u8a00\u8a9e\u3067\u5b66\u3076\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u5165\u9580\u300b\uff0c\u8be5\u4e66\u4ecb\u7ecd\u4e86GoF\u8bbe\u8ba1\u6a21\u5f0f\u7684\u5185 […]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-31653","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u5728Java\u4e2d\u4f7f\u7528\u4eab\u5143\u6a21\u5f0f - 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\/\u5728java\u4e2d\u4f7f\u7528\u4eab\u5143\u6a21\u5f0f\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5728Java\u4e2d\u4f7f\u7528\u4eab\u5143\u6a21\u5f0f\" \/>\n<meta property=\"og:description\" content=\"\u9996\u5148 \u6211\u5c06\u603b\u7ed3\u6211\u901a\u8fc7\u9605\u8bfb\u7684\u300a\u5897\u88dc\u6539\u8a02\u7248 Java\u8a00\u8a9e\u3067\u5b66\u3076\u30c7\u30b6\u30a4\u30f3\u30d1\u30bf\u30fc\u30f3\u5165\u9580\u300b\uff0c\u8be5\u4e66\u4ecb\u7ecd\u4e86GoF\u8bbe\u8ba1\u6a21\u5f0f\u7684\u5185 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5728java\u4e2d\u4f7f\u7528\u4eab\u5143\u6a21\u5f0f\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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