{"id":1267,"date":"2026-04-16T23:38:33","date_gmt":"2026-04-16T15:38:33","guid":{"rendered":"https:\/\/yunyanglib.cn\/?p=1267"},"modified":"2026-04-16T23:38:35","modified_gmt":"2026-04-16T15:38:35","slug":"%e3%80%90java%e3%80%91%e4%b8%80%e6%96%87%e5%90%83%e9%80%8f-final-%e5%85%b3%e9%94%ae%e5%ad%97%ef%bc%9a%e4%bb%8e%e5%8f%98%e9%87%8f%e5%88%b0%e7%b1%bb%e7%9a%84%e5%85%a8%e6%96%b9%e4%bd%8d%e8%a7%a3%e6%9e%90","status":"publish","type":"post","link":"https:\/\/yunyanglib.cn\/?p=1267","title":{"rendered":"\u3010Java\u3011\u4e00\u6587\u5403\u900f final \u5173\u952e\u5b57\uff1a\u4ece\u53d8\u91cf\u5230\u7c7b\u7684\u5168\u65b9\u4f4d\u89e3\u6790"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u4f5c\u4e3a Java \u4e2d\u6700\u57fa\u7840\u4e5f\u6700\u5e38\u7528\u7684\u5173\u952e\u5b57\u4e4b\u4e00\uff0c<code>final<\/code> \u770b\u4f3c\u7b80\u5355\uff0c\u5b9e\u5219\u85cf\u7740\u4e0d\u5c11\u5bb9\u6613\u8e29\u5751\u7684\u7ec6\u8282\u3002\u65e0\u8bba\u662f\u9762\u8bd5\u4e2d\u9ad8\u9891\u51fa\u73b0\u7684 \u201cfinal \u4fee\u9970\u7684\u53d8\u91cf\u771f\u7684\u4e0d\u53ef\u53d8\u5417\uff1f\u201d\uff0c\u8fd8\u662f\u5b9e\u9645\u5f00\u53d1\u4e2d\u5e38\u91cf\u5b9a\u4e49\u3001\u65b9\u6cd5\u9632\u91cd\u5199\u7b49\u573a\u666f\uff0c\u90fd\u79bb\u4e0d\u5f00\u5bf9 <code>final<\/code> \u7684\u6df1\u5165\u7406\u89e3\u3002\u4eca\u5929\u5c31\u5e26\u5927\u5bb6\u4ece\u5934\u5230\u5c3e\u5403\u900f <code>final<\/code> \u5173\u952e\u5b57\uff0c\u7ed3\u5408\u4ee3\u7801\u793a\u4f8b\u62c6\u89e3\u5b83\u7684\u6838\u5fc3\u7528\u6cd5\u548c\u6ce8\u610f\u4e8b\u9879\uff5e<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001final \u53d8\u91cf\uff1a\u4e00\u65e6\u8d4b\u503c\uff0c\u7ec8\u8eab\u4e0d\u53d8\uff1f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u6838\u5fc3\u5b9a\u4e49<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u88ab <code>final<\/code> \u4fee\u9970\u7684\u53d8\u91cf\uff0c\u672c\u8d28\u662f \u201c<strong>\u4e0d\u80fd\u88ab\u91cd\u65b0\u8d4b\u503c<\/strong>\u201d\uff0c\u800c\u975e \u201c\u53d8\u91cf\u6307\u5411\u7684\u5bf9\u8c61\u4e0d\u53ef\u53d8\u201d\u2014\u2014 \u8fd9\u662f\u5f88\u591a\u521d\u5b66\u8005\u5bb9\u6613\u6df7\u6dc6\u7684\u70b9\uff0c\u540e\u9762\u4f1a\u901a\u8fc7\u4ee3\u7801\u9a8c\u8bc1\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u4e09\u5927\u4f7f\u7528\u573a\u666f\u4e0e\u4ee3\u7801\u793a\u4f8b<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\uff081\uff09\u6210\u5458\u53d8\u91cf<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\"><code>final<\/code> \u4fee\u9970\u7684\u6210\u5458\u53d8\u91cf\uff08\u5305\u62ec\u5b9e\u4f8b\u53d8\u91cf\u548c\u7c7b\u53d8\u91cf\uff09\u5fc5\u987b\u5b8c\u6210\u521d\u59cb\u5316\uff0c\u5426\u5219\u7f16\u8bd1\u5668\u76f4\u63a5\u62a5\u9519\u3002\u521d\u59cb\u5316\u65b9\u5f0f\u6709\u4e24\u79cd\uff1a\u58f0\u660e\u65f6\u76f4\u63a5\u8d4b\u503c\uff0c\u6216\u5728\u6784\u9020\u65b9\u6cd5\u4e2d\u8d4b\u503c\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class FinalMemberDemo {\n    \/\/ \u58f0\u660e\u65f6\u76f4\u63a5\u521d\u59cb\u5316\n    private final String INSTANCE_CONSTANT = \"\u5b9e\u4f8b\u5e38\u91cf\";\n    \n    \/\/ \u7c7b\u53d8\u91cf\uff08static + final \u7ec4\u5408\uff0c\u5373\u5e38\u91cf\uff0c\u547d\u540d\u89c4\u8303\uff1a\u5168\u5927\u5199+\u4e0b\u5212\u7ebf\u5206\u9694\uff09\n    public static final String GLOBAL_CONSTANT = \"\u5168\u5c40\u5e38\u91cf\";\n    \n    private final int dynamicFinal;\n    \n    \/\/ \u6784\u9020\u65b9\u6cd5\u4e2d\u521d\u59cb\u5316 final \u6210\u5458\u53d8\u91cf\n    public FinalMemberDemo(int value) {\n        this.dynamicFinal = value; \/\/ \u5408\u6cd5\uff1a\u6784\u9020\u65b9\u6cd5\u4e2d\u5b8c\u6210\u521d\u59cb\u5316\n    }\n    \n    public void modifyFinal() {\n        \/\/ INSTANCE_CONSTANT = \"\u4fee\u6539\u5931\u8d25\"; \/\/ \u7f16\u8bd1\u62a5\u9519\uff1a\u65e0\u6cd5\u4e3a\u6700\u7ec8\u53d8\u91cf\u8d4b\u503c\n        \/\/ dynamicFinal = 100; \/\/ \u7f16\u8bd1\u62a5\u9519\uff1a\u5df2\u5728\u6784\u9020\u65b9\u6cd5\u4e2d\u521d\u59cb\u5316\uff0c\u4e0d\u80fd\u91cd\u590d\u8d4b\u503c\n    }\n}\n<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\uff082\uff09\u5c40\u90e8\u53d8\u91cf<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c40\u90e8\u53d8\u91cf\u88ab <code>final<\/code> \u4fee\u9970\u540e\uff0c\u540c\u6837\u4e0d\u80fd\u91cd\u65b0\u8d4b\u503c\uff0c\u4f46\u53ef\u4ee5\u4e0d\u7acb\u5373\u521d\u59cb\u5316\uff0c\u53ea\u8981\u5728\u4f7f\u7528\u524d\u5b8c\u6210\u8d4b\u503c\u5373\u53ef\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class FinalLocalDemo {\n    public static void calculate(final int num) {\n        \/\/ num = 20; \/\/ \u7f16\u8bd1\u62a5\u9519\uff1afinal \u53c2\u6570\u4e0d\u80fd\u4fee\u6539\n        int result = num * 10;\n        System.out.println(\"\u7ed3\u679c\uff1a\" + result);\n    }\n    \n    public static void main(String&#91;] args) {\n        final String name;\n        name = \"\u4e91\u626c\"; \/\/ \u5408\u6cd5\uff1a\u4f7f\u7528\u524d\u521d\u59cb\u5316\n        \/\/ name = \"YunYang\"; \/\/ \u7f16\u8bd1\u62a5\u9519\uff1a\u4e0d\u80fd\u91cd\u65b0\u8d4b\u503c\n        \n        calculate(5); \/\/ \u4f20\u5165\u53c2\u6570\u540e\uff0c\u65b9\u6cd5\u5185\u65e0\u6cd5\u4fee\u6539\u8be5\u53c2\u6570\n    }\n}\n<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">\uff083\uff09final \u4e0e\u5bf9\u8c61\u5f15\u7528<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u91cd\u70b9\u6ce8\u610f\uff1a<code>final<\/code> \u4fee\u9970\u5bf9\u8c61\u65f6\uff0c\u9650\u5236\u7684\u662f \u201c\u5f15\u7528\u4e0d\u80fd\u6307\u5411\u65b0\u5bf9\u8c61\u201d\uff0c\u800c\u975e \u201c\u5bf9\u8c61\u5185\u90e8\u5c5e\u6027\u4e0d\u53ef\u53d8\u201d\uff01<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import java.util.ArrayList;\nimport java.util.List;\n\npublic class FinalObjectDemo {\n    public static void main(String&#91;] args) {\n        final List&lt;String> list = new ArrayList&lt;>();\n\n        \/\/ \u5408\u6cd5\uff1a\u5bf9\u8c61\u5185\u90e8\u5c5e\u6027\u53ef\u4ee5\u4fee\u6539\n        list.add(\"Java\");\n        list.add(\"MySQL\");\n        System.out.println(list); \/\/ \u8f93\u51fa\uff1a&#91;Java, MySQL]\n\n        \/\/ list = new ArrayList\u62a5\u9519\uff1a\u4e0d\u80fd\u91cd\u65b0\u6307\u5411\u65b0\u5bf9\u8c61\n        \/\/ list = null; \/\/ \u7f16\u8bd1\u62a5\u9519\uff1a\u540c\u6837\u4e0d\u5141\u8bb8\u4fee\u6539\u5f15\u7528\n    }\n}\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001final \u65b9\u6cd5\uff1a\u62d2\u7edd\u88ab\u91cd\u5199\u7684 \u201c\u5014\u5f3a\u65b9\u6cd5\u201d<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u6838\u5fc3\u5b9a\u4e49<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u88ab <code>final<\/code> \u4fee\u9970\u7684\u65b9\u6cd5\uff0c<strong>\u5b50\u7c7b\u65e0\u6cd5\u91cd\u5199<\/strong>\uff08Override\uff09\u3002\u8fd9\u5728\u8bbe\u8ba1\u7c7b\u65f6\u975e\u5e38\u6709\u7528 \u2014\u2014 \u5982\u679c\u67d0\u4e9b\u65b9\u6cd5\u7684\u903b\u8f91\u662f\u6838\u5fc3\u903b\u8f91\uff0c\u4e0d\u5141\u8bb8\u5b50\u7c7b\u7be1\u6539\uff0c\u5c31\u53ef\u4ee5\u7528 <code>final<\/code> \u4fdd\u62a4\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u4ee3\u7801\u793a\u4f8b\u4e0e\u5b9e\u6218\u573a\u666f<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u7236\u7c7b\uff1a\u5b9a\u4e49 final \u65b9\u6cd5\nclass Parent {\n    \/\/ final \u65b9\u6cd5\uff1a\u5b50\u7c7b\u4e0d\u80fd\u91cd\u5199\n    public final void showInfo() {\n        System.out.println(\"\u7236\u7c7b\u6838\u5fc3\u65b9\u6cd5\uff0c\u4e0d\u53ef\u4fee\u6539\");\n    }\n    \n    \/\/ \u666e\u901a\u65b9\u6cd5\uff1a\u5b50\u7c7b\u53ef\u4ee5\u91cd\u5199\n    public void sayHello() {\n        System.out.println(\"\u7236\u7c7b Hello\");\n    }\n}\n\n\/\/ \u5b50\u7c7b\u7ee7\u627f\u7236\u7c7b\nclass Child extends Parent {\n    \/\/ @Override \/\/ \u7f16\u8bd1\u62a5\u9519\uff1aCannot override the final method from Parent\n    \/\/ public void showInfo() {\n    \/\/     System.out.println(\"\u5c1d\u8bd5\u91cd\u5199 final \u65b9\u6cd5\");\n    \/\/ }\n    \n    \/\/ \u5408\u6cd5\uff1a\u91cd\u5199\u666e\u901a\u65b9\u6cd5\n    @Override\n    public void sayHello() {\n        System.out.println(\"\u5b50\u7c7b Hello\");\n    }\n}\n\npublic class FinalMethodDemo {\n    public static void main(String&#91;] args) {\n        Child child = new Child();\n        child.showInfo(); \/\/ \u8f93\u51fa\uff1a\u7236\u7c7b\u6838\u5fc3\u65b9\u6cd5\uff0c\u4e0d\u53ef\u4fee\u6539\uff08\u8c03\u7528\u7236\u7c7b final \u65b9\u6cd5\uff09\n        child.sayHello(); \/\/ \u8f93\u51fa\uff1a\u5b50\u7c7b Hello\uff08\u8c03\u7528\u91cd\u5199\u540e\u7684\u666e\u901a\u65b9\u6cd5\uff09\n    }\n}\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u7ecf\u5178\u6848\u4f8b\uff1aThread \u7c7b\u7684 isAlive () \u65b9\u6cd5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">JDK \u4e2d\u7684 <code>Thread<\/code> \u7c7b\u5c31\u662f\u5f88\u597d\u7684\u4f8b\u5b50\uff1a<code>Thread<\/code> \u7c7b\u672c\u8eab\u4e0d\u662f <code>final<\/code>\uff08\u5141\u8bb8\u5b50\u7c7b\u7ee7\u627f\uff09\uff0c\u4f46\u5b83\u7684 <code>isAlive()<\/code> \u65b9\u6cd5\u88ab\u58f0\u660e\u4e3a <code>final<\/code>\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class Thread implements Runnable {\n    \/\/ native \u65b9\u6cd5\uff1a\u7531\u64cd\u4f5c\u7cfb\u7edf\u5b9e\u73b0\uff0c\u91cd\u5199\u65e0\u610f\u4e49\uff0c\u6545\u7528 final \u7981\u6b62\u91cd\u5199\n    public final native boolean isAlive();\n    \/\/ ... \u5176\u4ed6\u65b9\u6cd5\n}\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u4e3a <code>isAlive()<\/code> \u662f\u672c\u5730\u65b9\u6cd5\uff0c\u903b\u8f91\u4f9d\u8d56\u64cd\u4f5c\u7cfb\u7edf\u5e95\u5c42\u5b9e\u73b0\uff0c\u5b50\u7c7b\u91cd\u5199\u540e\u65e0\u6cd5\u4fdd\u8bc1\u6b63\u786e\u6027\uff0c\u6240\u4ee5\u7528 <code>final<\/code> \u9650\u5236\u91cd\u5199\uff0c\u8fd9\u4e5f\u662f\u8bbe\u8ba1\u6a21\u5f0f\u4e2d \u201c\u4fdd\u62a4\u6838\u5fc3\u903b\u8f91\u201d \u7684\u5e38\u7528\u601d\u8def\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001final \u7c7b\uff1a\u4e0d\u80fd\u88ab\u7ee7\u627f\u7684 \u201c\u7ec8\u6781\u7c7b\u201d<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u6838\u5fc3\u5b9a\u4e49<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u88ab <code>final<\/code> \u4fee\u9970\u7684\u7c7b\uff0c<strong>\u65e0\u6cd5\u88ab\u4efb\u4f55\u7c7b\u7ee7\u627f<\/strong>\uff08\u76f8\u5f53\u4e8e \u201c\u65ad\u7edd\u540e\u4ee3\u201d\uff09\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u4ee3\u7801\u793a\u4f8b\u4e0e\u7ecf\u5178\u6848\u4f8b<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ final \u7c7b\uff1a\u4e0d\u80fd\u88ab\u7ee7\u627f\nfinal class FinalClass {\n    public void doSomething() {\n        System.out.println(\"final \u7c7b\u7684\u65b9\u6cd5\");\n    }\n}\n\n\/\/ class SubClass extends FinalClass { \/\/ \u7f16\u8bd1\u62a5\u9519\uff1aCannot extend final class 'FinalClass'\n\/\/ }\n\npublic class FinalClassDemo {\n    public static void main(String&#91;] args) {\n        FinalClass finalObj = new FinalClass();\n        finalObj.doSomething(); \/\/ \u8f93\u51fa\uff1afinal \u7c7b\u7684\u65b9\u6cd5\n    }\n}\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u4e3a\u4ec0\u4e48 String \u7c7b\u662f final \u7684\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">JDK \u4e2d\u7684 <code>String<\/code> \u7c7b\u662f\u5178\u578b\u7684 <code>final<\/code> \u7c7b\uff0c\u539f\u56e0\u6709\u4e09\u4e2a\u6838\u5fc3\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5b57\u7b26\u4e32\u5e38\u91cf\u6c60\u4f18\u5316<\/strong>\uff1a\u5982\u679c String \u53ef\u7ee7\u627f\uff0c\u5b50\u7c7b\u53ef\u80fd\u4fee\u6539\u5176 <code>value<\/code> \u6570\u7ec4\uff08\u5b58\u50a8\u5b57\u7b26\u4e32\u7684\u5e95\u5c42\u7ed3\u6784\uff09\uff0c\u5bfc\u81f4\u5e38\u91cf\u6c60\u4e2d\u7684\u5b57\u7b26\u4e32\u88ab\u7be1\u6539\uff0c\u7834\u574f\u5e38\u91cf\u6c60\u673a\u5236\uff1b<\/li>\n\n\n\n<li><strong>\u7ebf\u7a0b\u5b89\u5168<\/strong>\uff1aString \u4f5c\u4e3a\u4e0d\u53ef\u53d8\u5bf9\u8c61\uff08\u672c\u8d28\u662f <code>final char[] value<\/code> + \u65e0\u4fee\u6539\u65b9\u6cd5\uff09\uff0c\u88ab <code>final<\/code> \u4fee\u9970\u540e\u907f\u514d\u4e86\u5b50\u7c7b\u91cd\u5199\u4fee\u6539\u65b9\u6cd5\uff0c\u4fdd\u8bc1\u591a\u7ebf\u7a0b\u73af\u5883\u4e0b\u7684\u5b89\u5168\u6027\uff1b<\/li>\n\n\n\n<li><strong>HashCode \u4e0d\u53ef\u53d8\u6027<\/strong>\uff1aString \u7684 <code>hashCode()<\/code> \u57fa\u4e8e <code>value<\/code> \u6570\u7ec4\u8ba1\u7b97\uff0c\u82e5 String \u53ef\u7ee7\u627f\uff0c\u5b50\u7c7b\u4fee\u6539 <code>value<\/code> \u4f1a\u5bfc\u81f4 hashCode \u53d8\u5316\uff0c\u7834\u574f HashMap \u7b49\u96c6\u5408\u7684\u54c8\u5e0c\u8868\u7ed3\u6784\u3002<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">4. \u5173\u952e\u6ce8\u610f\u70b9<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>final<\/code> \u7c7b\u7684\u6240\u6709\u65b9\u6cd5\u9ed8\u8ba4\u662f <code>final<\/code> \u7684\uff08\u4f46\u6210\u5458\u53d8\u91cf\u4e0d\u4e00\u5b9a\u662f <code>final<\/code> \u7684\uff09\uff1b<\/li>\n\n\n\n<li>\u5bf9\u6bd4\u4e24\u4e2a\u573a\u666f\uff1a\n<ul class=\"wp-block-list\">\n<li><code>final class A<\/code>\uff1aA \u4e0d\u80fd\u88ab\u7ee7\u627f\uff0c\u6240\u6709\u65b9\u6cd5\u90fd\u4e0d\u80fd\u91cd\u5199\uff1b<\/li>\n\n\n\n<li><code>class B { public final void m1(); public final void m2(); }<\/code>\uff1aB \u53ef\u4ee5\u88ab\u7ee7\u627f\uff0c\u5b50\u7c7b\u53ef\u65b0\u589e\u65b9\u6cd5\uff0c\u4f46\u4e0d\u80fd\u91cd\u5199 m1 () \u548c m2 ()\uff1b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><code>final<\/code> \u7c7b\u7684\u5bf9\u8c61\u4e0d\u662f \u201c\u4e0d\u53ef\u53d8\u5bf9\u8c61\u201d\uff1a\u9664\u975e\u7c7b\u7684\u6240\u6709\u6210\u5458\u53d8\u91cf\u90fd\u662f <code>final<\/code> \u4e14\u65e0\u4fee\u6539\u65b9\u6cd5\uff0c\u5426\u5219\u5bf9\u8c61\u5c5e\u6027\u4ecd\u53ef\u4fee\u6539\uff08\u6bd4\u5982 final \u7c7b\u4e2d\u5b9a\u4e49\u975e final \u7684\u6210\u5458\u53d8\u91cf\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001\u5e38\u89c1\u9762\u8bd5\u9898\u4e0e\u907f\u5751\u603b\u7ed3<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>final\u3001finally\u3001finalize \u7684\u533a\u522b\uff1f<\/strong>\n<ul class=\"wp-block-list\">\n<li>final\uff1a\u4fee\u9970\u53d8\u91cf\uff08\u4e0d\u53ef\u91cd\u8d4b\u503c\uff09\u3001\u65b9\u6cd5\uff08\u4e0d\u53ef\u91cd\u5199\uff09\u3001\u7c7b\uff08\u4e0d\u53ef\u7ee7\u627f\uff09\uff1b<\/li>\n\n\n\n<li>finally\uff1atry-catch-finally \u4e2d\u7684\u8bed\u53e5\u5757\uff0c\u65e0\u8bba\u662f\u5426\u629b\u51fa\u5f02\u5e38\u90fd\u4f1a\u6267\u884c\uff08\u9664\u975e JVM \u9000\u51fa\uff09\uff1b<\/li>\n\n\n\n<li>finalize\uff1aObject \u7c7b\u7684\u65b9\u6cd5\uff0c\u5783\u573e\u56de\u6536\u524d\u8c03\u7528\uff0c\u4e0d\u63a8\u8350\u4f7f\u7528\uff08\u65e0\u6cd5\u4fdd\u8bc1\u6267\u884c\u65f6\u673a\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>final \u53d8\u91cf\u4e00\u5b9a\u662f\u7f16\u8bd1\u671f\u5e38\u91cf\u5417\uff1f<\/strong>\u4e0d\u4e00\u5b9a\uff01\u53ea\u6709 <code>static final<\/code> \u4fee\u9970\u4e14\u58f0\u660e\u65f6\u76f4\u63a5\u8d4b\u503c\u7684\u53d8\u91cf\u624d\u662f\u7f16\u8bd1\u671f\u5e38\u91cf\uff08\u6bd4\u5982 <code>public static final int NUM = 10<\/code>\uff09\uff1b\u800c\u5b9e\u4f8b\u53d8\u91cf\u88ab final \u4fee\u9970\u65f6\uff0c\u82e5\u5728\u6784\u9020\u65b9\u6cd5\u4e2d\u8d4b\u503c\uff0c\u5c5e\u4e8e\u8fd0\u884c\u671f\u5e38\u91cf\uff08\u503c\u7531\u6784\u9020\u65b9\u6cd5\u53c2\u6570\u51b3\u5b9a\uff09\u3002<\/li>\n\n\n\n<li><strong>\u4e3a\u4ec0\u4e48\u4e0d\u5efa\u8bae\u6ee5\u7528 final \u7c7b\uff1f<\/strong>final \u7c7b\u65e0\u6cd5\u88ab\u7ee7\u627f\uff0c\u82e5\u540e\u7eed\u53d1\u73b0\u7c7b\u4e2d\u7684\u65b9\u6cd5\u5b58\u5728 Bug\uff0c\u65e0\u6cd5\u901a\u8fc7\u5b50\u7c7b\u91cd\u5199\u4fee\u590d\uff0c\u53ea\u80fd\u4fee\u6539\u539f\u7c7b\u4ee3\u7801\uff0c\u8fdd\u80cc\u4e86 \u201c\u5f00\u95ed\u539f\u5219\u201d\u3002\u53ea\u6709\u5728\u786e\u4fdd\u7c7b\u7684\u903b\u8f91\u7edd\u5bf9\u7a33\u5b9a\u3001\u4e0d\u9700\u8981\u6269\u5c55\u65f6\uff0c\u624d\u9002\u5408\u8bbe\u8ba1\u4e3a final \u7c7b\u3002<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">\u7ed3\u8bed<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">final \u5173\u952e\u5b57\u867d\u7136\u7b80\u5355\uff0c\u4f46\u6db5\u76d6\u4e86\u53d8\u91cf\u3001\u65b9\u6cd5\u3001\u7c7b\u4e09\u4e2a\u5c42\u9762\u7684\u6838\u5fc3\u7528\u6cd5\uff0c\u7406\u89e3\u5176 \u201c\u4e0d\u53ef\u53d8\u201d \u7684\u672c\u8d28\uff08\u662f\u5f15\u7528\u4e0d\u53ef\u53d8\uff0c\u800c\u975e\u5bf9\u8c61\u4e0d\u53ef\u53d8\uff09\u662f\u5173\u952e\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u5408\u7406\u4f7f\u7528 final \u4e0d\u4ec5\u80fd\u63d0\u9ad8\u4ee3\u7801\u5b89\u5168\u6027\uff08\u9632\u6b62\u610f\u5916\u4fee\u6539\uff09\uff0c\u8fd8\u80fd\u8ba9\u4ee3\u7801\u903b\u8f91\u66f4\u6e05\u6670 \u2014\u2014 \u6bd4\u5982\u7528 <code>static final<\/code> \u5b9a\u4e49\u5e38\u91cf\uff0c\u7528 final \u65b9\u6cd5\u4fdd\u62a4\u6838\u5fc3\u903b\u8f91\u3002\u5e0c\u671b\u8fd9\u7bc7\u6587\u7ae0\u80fd\u5e2e\u5927\u5bb6\u5f7b\u5e95\u641e\u61c2 final \u5173\u952e\u5b57\uff0c\u907f\u5f00\u5e38\u89c1\u5751\uff5e<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5982\u679c\u6709\u7591\u95ee\u6216\u8865\u5145\uff0c\u6b22\u8fce\u5728\u8bc4\u8bba\u533a\u7559\u8a00\u4ea4\u6d41\uff01\u4e5f\u53ef\u4ee5\u5173\u6ce8\u6211\u7684\u300c\u540e\u7aef\u6280\u672f\u4e13\u680f\u300d\uff0c\u540e\u7eed\u4f1a\u5206\u4eab\u66f4\u591a Java \u6838\u5fc3\u77e5\u8bc6\u70b9\uff5e<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f5c\u4e3a Java \u4e2d\u6700\u57fa\u7840\u4e5f\u6700\u5e38\u7528\u7684\u5173\u952e\u5b57\u4e4b\u4e00\uff0cfinal \u770b\u4f3c\u7b80\u5355\uff0c\u5b9e\u5219\u85cf\u7740\u4e0d\u5c11\u5bb9\u6613\u8e29\u5751\u7684\u7ec6\u8282\u3002\u65e0\u8bba\u662f\u9762\u8bd5\u4e2d\u9ad8<\/p>\n<div class=\"more-link\">\n\t\t\t\t <a 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