{"id":2236,"date":"2025-03-02T11:09:22","date_gmt":"2025-03-02T03:09:22","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=2236"},"modified":"2025-03-02T11:09:22","modified_gmt":"2025-03-02T03:09:22","slug":"java-%e6%8e%a5%e5%8f%a3%ef%bc%88interface%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/02\/java-%e6%8e%a5%e5%8f%a3%ef%bc%88interface%ef%bc%89\/","title":{"rendered":"Java \u63a5\u53e3\uff08Interface\uff09"},"content":{"rendered":"\n<p>\u63a5\u53e3\u662f Java \u4e2d\u7684\u4e00\u4e2a\u91cd\u8981\u6982\u5ff5\uff0c\u5b83\u5b9a\u4e49\u4e86\u4e00\u7ec4\u65b9\u6cd5\u7684\u96c6\u5408\uff0c\u4f46\u5e76\u4e0d\u63d0\u4f9b\u65b9\u6cd5\u7684\u5177\u4f53\u5b9e\u73b0\u3002\u63a5\u53e3\u662f Java \u4e2d\u5b9e\u73b0&nbsp;<strong>\u62bd\u8c61<\/strong>&nbsp;\u548c&nbsp;<strong>\u591a\u6001<\/strong>&nbsp;\u7684\u91cd\u8981\u5de5\u5177\uff0c\u901a\u5e38\u7528\u6765\u5b9a\u4e49\u4e0d\u540c\u7c7b\u5171\u4eab\u7684\u884c\u4e3a\u89c4\u8303\uff0c\u800c\u8fd9\u4e9b\u7c7b\u53ef\u4ee5\u6709\u4e0d\u540c\u7684\u5b9e\u73b0\u65b9\u5f0f\u3002<\/p>\n\n\n\n<p>\u63a5\u53e3\u4e0e\u7c7b\u7684\u4e3b\u8981\u533a\u522b\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u63a5\u53e3<\/strong>\u53ea\u5b9a\u4e49\u65b9\u6cd5\u7684\u7b7e\u540d\uff0c\u4e0d\u80fd\u6709\u65b9\u6cd5\u7684\u5b9e\u73b0\uff08\u4f46\u4ece Java 8 \u5f00\u59cb\uff0c\u63a5\u53e3\u53ef\u4ee5\u5305\u542b\u9ed8\u8ba4\u65b9\u6cd5\u00a0<code>default<\/code>\u00a0\u548c\u9759\u6001\u65b9\u6cd5\u00a0<code>static<\/code>\uff09\u3002<\/li>\n\n\n\n<li><strong>\u7c7b<\/strong>\u5219\u662f\u5b9a\u4e49\u4e86\u5c5e\u6027\uff08\u5b57\u6bb5\uff09\u548c\u65b9\u6cd5\uff0c\u5e76\u53ef\u4ee5\u6709\u5177\u4f53\u5b9e\u73b0\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u63a5\u53e3\u7684\u5b9a\u4e49\u548c\u4f7f\u7528<\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>1. \u63a5\u53e3\u7684\u5b9a\u4e49<\/strong><\/h4>\n\n\n\n<p>\u63a5\u53e3\u4f7f\u7528 <code>interface<\/code> \u5173\u952e\u5b57\u5b9a\u4e49\uff0c\u63a5\u53e3\u4e2d\u7684\u6240\u6709\u65b9\u6cd5\u9ed8\u8ba4\u90fd\u662f <code>public<\/code> \u548c <code>abstract<\/code> \u7684\uff0c\u4e14\u63a5\u53e3\u4e0d\u80fd\u5305\u542b\u4efb\u4f55\u5b9e\u4f8b\u5b57\u6bb5\u3002\u63a5\u53e3\u4e2d\u7684\u65b9\u6cd5\u53ea\u6709\u58f0\u660e\uff0c\u6ca1\u6709\u65b9\u6cd5\u4f53\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public interface Animal {\n    \/\/ \u63a5\u53e3\u4e2d\u7684\u65b9\u6cd5\uff0c\u9ed8\u8ba4\u662f public abstract \u7684\n    void eat();\n    void sleep();\n}<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>2. \u5b9e\u73b0\u63a5\u53e3<\/strong><\/h4>\n\n\n\n<p>\u4e00\u4e2a\u7c7b\u901a\u8fc7 <code>implements<\/code> \u5173\u952e\u5b57\u5b9e\u73b0\u63a5\u53e3\uff0c\u7c7b\u9700\u8981\u63d0\u4f9b\u63a5\u53e3\u4e2d\u58f0\u660e\u7684\u6240\u6709\u65b9\u6cd5\u7684\u5b9e\u73b0\u3002\u7c7b\u53ef\u4ee5\u5b9e\u73b0\u591a\u4e2a\u63a5\u53e3\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class Dog implements Animal {\n    @Override\n    public void eat() {\n        System.out.println(\"Dog is eating\");\n    }\n\n    @Override\n    public void sleep() {\n        System.out.println(\"Dog is sleeping\");\n    }\n}<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>3. \u63a5\u53e3\u7684\u4f7f\u7528<\/strong><\/h4>\n\n\n\n<p>\u63a5\u53e3\u7684\u4f7f\u7528\u901a\u5e38\u662f\u901a\u8fc7\u5f15\u7528\u63a5\u53e3\u7c7b\u578b\u6765\u8fdb\u884c\u64cd\u4f5c\uff0c\u901a\u8fc7\u591a\u6001\uff0c\u4f7f\u7528\u5b9e\u73b0\u8be5\u63a5\u53e3\u7684\u7c7b\u7684\u5bf9\u8c61\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class Test {\n    public static void main(String&#91;] args) {\n        Animal myDog = new Dog(); \/\/ \u521b\u5efa\u5b9e\u73b0\u4e86 Animal \u63a5\u53e3\u7684\u5bf9\u8c61\n        myDog.eat();  \/\/ \u8c03\u7528 Dog \u7c7b\u4e2d eat \u65b9\u6cd5\n        myDog.sleep();  \/\/ \u8c03\u7528 Dog \u7c7b\u4e2d sleep \u65b9\u6cd5\n    }\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>\u63a5\u53e3\u7684\u7279\u70b9<\/strong><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u63a5\u53e3\u4e0d\u80fd\u5b9e\u4f8b\u5316<\/strong>\uff1a\u63a5\u53e3\u672c\u8eab\u4e0d\u80fd\u521b\u5efa\u5bf9\u8c61\uff0c\u5fc5\u987b\u7531\u7c7b\u6765\u5b9e\u73b0\u63a5\u53e3\u3002<\/li>\n\n\n\n<li><strong>\u63a5\u53e3\u4e2d\u7684\u65b9\u6cd5\u662f\u62bd\u8c61\u7684<\/strong>\uff1a\u63a5\u53e3\u7684\u65b9\u6cd5\u662f\u6ca1\u6709\u5b9e\u73b0\u7684\uff0c\u5fc5\u987b\u7531\u5b9e\u73b0\u8be5\u63a5\u53e3\u7684\u7c7b\u63d0\u4f9b\u5b9e\u73b0\u3002<\/li>\n\n\n\n<li><strong>\u4e00\u4e2a\u7c7b\u53ef\u4ee5\u5b9e\u73b0\u591a\u4e2a\u63a5\u53e3<\/strong>\uff1aJava \u652f\u6301\u591a\u91cd\u7ee7\u627f\uff0c\u4f46\u4e0d\u662f\u901a\u8fc7\u7c7b\u7ee7\u627f\uff0c\u800c\u662f\u901a\u8fc7\u63a5\u53e3\u5b9e\u73b0\u3002<\/li>\n\n\n\n<li><strong>\u63a5\u53e3\u53ef\u4ee5\u6709\u5e38\u91cf<\/strong>\uff1a\u63a5\u53e3\u4e2d\u53ef\u4ee5\u5b9a\u4e49 <code>public static final<\/code> \u5e38\u91cf\uff0c\u4f46\u4e0d\u80fd\u6709\u5b9e\u4f8b\u53d8\u91cf\u3002<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>public interface Shape {\n    double PI = 3.14159;  \/\/ \u63a5\u53e3\u4e2d\u7684\u5e38\u91cf\n    double area();\n}<\/code><\/pre>\n\n\n\n<ol start=\"5\" class=\"wp-block-list\">\n<li><strong>\u63a5\u53e3\u652f\u6301\u591a\u6001<\/strong>\uff1a\u901a\u8fc7\u63a5\u53e3\u5f15\u7528\u7c7b\u578b\uff0c\u53ef\u4ee5\u5b9e\u73b0\u4e0d\u540c\u7c7b\u7684\u591a\u6001\u6027\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u63a5\u4e0b\u6765\u6211\u5c06\u6df1\u5165\u63a2\u8ba8 Java \u63a5\u53e3\u7684\u9ad8\u7ea7\u7279\u6027\u548c\u5b9e\u9645\u5e94\u7528\uff0c\u5305\u62ec\u63a5\u53e3\u7684\u8bbe\u8ba1\u6a21\u5f0f\u3001\u9ed8\u8ba4\u65b9\u6cd5\u548c\u9759\u6001\u65b9\u6cd5\u7684\u5e94\u7528\uff0c\u4ee5\u53ca\u63a5\u53e3\u4e0e\u62bd\u8c61\u7c7b\u7684\u533a\u522b\u548c\u9009\u62e9\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>1. \u63a5\u53e3\u7684\u9ad8\u7ea7\u7279\u6027<\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>1.1 \u63a5\u53e3\u7684\u591a\u91cd\u7ee7\u627f<\/strong><\/h4>\n\n\n\n<p>\u4e00\u4e2a\u7c7b\u53ef\u4ee5\u5b9e\u73b0\u591a\u4e2a\u63a5\u53e3\uff0c\u8fd9\u662f Java \u4e2d\u7684\u4e00\u79cd\u201c\u591a\u91cd\u7ee7\u627f\u201d\u673a\u5236\u3002\u867d\u7136 Java \u4e0d\u5141\u8bb8\u7c7b\u7ee7\u627f\u591a\u4e2a\u7c7b\uff0c\u4f46\u53ef\u4ee5\u5b9e\u73b0\u591a\u4e2a\u63a5\u53e3\uff0c\u4ece\u800c\u514b\u670d\u4e86\u5355\u7ee7\u627f\u7684\u9650\u5236\u3002<\/p>\n\n\n\n<p>\u8fd9\u79cd\u673a\u5236\u5141\u8bb8\u6211\u4eec\u5b9a\u4e49\u591a\u4e2a\u4e0d\u76f8\u5173\u7684\u884c\u4e3a\uff0c\u7136\u540e\u901a\u8fc7\u63a5\u53e3\u7ec4\u5408\u5728\u4e00\u8d77\u3002\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\uff0cJava \u63d0\u4f9b\u4e86\u4e00\u79cd\u7075\u6d3b\u7684\u8bbe\u8ba1\u80fd\u529b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>interface Swimmable {\n    void swim();\n}\n\ninterface Flyable {\n    void fly();\n}\n\nclass Duck implements Swimmable, Flyable {\n    @Override\n    public void swim() {\n        System.out.println(\"Duck is swimming\");\n    }\n\n    @Override\n    public void fly() {\n        System.out.println(\"Duck is flying\");\n    }\n}<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>1.2 \u63a5\u53e3\u4e2d\u7684\u5e38\u91cf\u548c\u9759\u6001\u65b9\u6cd5<\/strong><\/h4>\n\n\n\n<p>\u63a5\u53e3\u53ef\u4ee5\u5305\u542b <strong>\u5e38\u91cf<\/strong>\uff08public static final\uff09\uff0c\u8fd9\u4e9b\u5e38\u91cf\u901a\u5e38\u7528\u4e8e\u5b9a\u4e49\u4e00\u4e9b\u5e38\u91cf\u503c\uff0c\u4f8b\u5982\uff0c\u9519\u8bef\u7801\u3001\u914d\u7f6e\u9879\u7b49\u3002\u867d\u7136\u63a5\u53e3\u4e0d\u80fd\u5b9a\u4e49\u5b9e\u4f8b\u5b57\u6bb5\uff08\u5b9e\u4f8b\u53d8\u91cf\uff09\uff0c\u4f46\u5b83\u53ef\u4ee5\u5b9a\u4e49\u5e38\u91cf\uff0c\u8fd9\u4e9b\u5e38\u91cf\u5728\u63a5\u53e3\u7684\u6240\u6709\u5b9e\u73b0\u7c7b\u4e2d\u662f\u5171\u4eab\u7684\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public interface MyConstants {\n    int MAX_SIZE = 100;  \/\/ \u9ed8\u8ba4\u662f public static final\n    String ERROR_MSG = \"An error occurred!\";\n}<\/code><\/pre>\n\n\n\n<p>\u9759\u6001\u65b9\u6cd5\uff08<code>static<\/code>\uff09\u662f Java 8 \u5f15\u5165\u7684\u7279\u6027\uff0c\u53ef\u4ee5\u5728\u63a5\u53e3\u4e2d\u5b9a\u4e49\u9759\u6001\u65b9\u6cd5\u3002\u8fd9\u4e9b\u65b9\u6cd5\u5c5e\u4e8e\u63a5\u53e3\u672c\u8eab\uff0c\u800c\u4e0d\u662f\u4efb\u4f55\u5177\u4f53\u7684\u5b9e\u73b0\u7c7b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public interface Calculator {\n    static int add(int a, int b) {\n        return a + b;\n    }\n}\n\npublic class Test {\n    public static void main(String&#91;] args) {\n        int result = Calculator.add(2, 3); \/\/ \u76f4\u63a5\u901a\u8fc7\u63a5\u53e3\u8c03\u7528\u9759\u6001\u65b9\u6cd5\n        System.out.println(\"Result: \" + result);\n    }\n}<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>1.3 \u9ed8\u8ba4\u65b9\u6cd5\uff08Default Methods\uff09<\/strong><\/h4>\n\n\n\n<p>Java 8 \u5f15\u5165\u4e86\u9ed8\u8ba4\u65b9\u6cd5\uff08<code>default<\/code>\uff09\u3002\u9ed8\u8ba4\u65b9\u6cd5\u53ef\u4ee5\u5728\u63a5\u53e3\u4e2d\u63d0\u4f9b\u4e00\u4e2a\u9ed8\u8ba4\u7684\u5b9e\u73b0\uff0c\u907f\u514d\u5b9e\u73b0\u7c7b\u9700\u8981\u6bcf\u6b21\u90fd\u63d0\u4f9b\u5b9e\u73b0\u3002\u9ed8\u8ba4\u65b9\u6cd5\u53ef\u4ee5\u7528\u4e8e\u63a5\u53e3\u7684\u7248\u672c\u517c\u5bb9\uff0c\u5141\u8bb8\u63a5\u53e3\u5728\u5411\u540e\u517c\u5bb9\u7684\u60c5\u51b5\u4e0b\u6dfb\u52a0\u65b0\u65b9\u6cd5\uff0c\u800c\u4e0d\u5f71\u54cd\u5df2\u6709\u7684\u5b9e\u73b0\u7c7b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public interface Animal {\n    default void speak() {\n        System.out.println(\"Animal makes a sound\");\n    }\n}\n\npublic class Dog implements Animal {\n    \/\/ \u7531\u4e8e\u63a5\u53e3\u6709\u9ed8\u8ba4\u5b9e\u73b0\uff0cDog \u7c7b\u53ef\u4ee5\u4e0d\u91cd\u5199 speak \u65b9\u6cd5\n}\n\npublic class Test {\n    public static void main(String&#91;] args) {\n        Dog dog = new Dog();\n        dog.speak();  \/\/ \u8f93\u51fa \"Animal makes a sound\"\n    }\n}<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>1.4 \u63a5\u53e3\u7684\u7ee7\u627f<\/strong><\/h4>\n\n\n\n<p>\u63a5\u53e3\u4e0d\u4ec5\u53ef\u4ee5\u88ab\u7c7b\u5b9e\u73b0\uff0c\u8fd8\u53ef\u4ee5\u7ee7\u627f\u5176\u4ed6\u63a5\u53e3\u3002\u4e00\u4e2a\u63a5\u53e3\u53ef\u4ee5\u7ee7\u627f\u591a\u4e2a\u63a5\u53e3\uff0c\u4ece\u800c\u5408\u5e76\u591a\u4e2a\u63a5\u53e3\u7684\u884c\u4e3a\u3002\u8fd9\u662f\u63a5\u53e3\u591a\u91cd\u7ee7\u627f\u7684\u5e94\u7528\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>interface Animal {\n    void eat();\n}\n\ninterface Flyable {\n    void fly();\n}\n\n\/\/ Bird \u63a5\u53e3\u7ee7\u627f\u4e86 Animal \u548c Flyable \u63a5\u53e3\ninterface Bird extends Animal, Flyable {\n    void nest();\n}\n\nclass Sparrow implements Bird {\n    @Override\n    public void eat() {\n        System.out.println(\"Sparrow is eating\");\n    }\n\n    @Override\n    public void fly() {\n        System.out.println(\"Sparrow is flying\");\n    }\n\n    @Override\n    public void nest() {\n        System.out.println(\"Sparrow is building a nest\");\n    }\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. \u63a5\u53e3\u4e0e\u62bd\u8c61\u7c7b\u7684\u6df1\u5165\u5bf9\u6bd4<\/strong><\/h3>\n\n\n\n<p>\u867d\u7136\u63a5\u53e3\u548c\u62bd\u8c61\u7c7b\u6709\u76f8\u4f3c\u4e4b\u5904\uff0c\u90fd\u4e0d\u80fd\u5b9e\u4f8b\u5316\u4e14\u53ef\u4ee5\u5305\u542b\u62bd\u8c61\u65b9\u6cd5\uff0c\u4f46\u5b83\u4eec\u5728\u4f7f\u7528\u573a\u666f\u548c\u529f\u80fd\u4e0a\u6709\u663e\u8457\u5dee\u5f02\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7279\u6027<\/th><th>\u63a5\u53e3<\/th><th>\u62bd\u8c61\u7c7b<\/th><\/tr><\/thead><tbody><tr><td><strong>\u591a\u7ee7\u627f<\/strong><\/td><td>\u652f\u6301\u7c7b\u5b9e\u73b0\u591a\u4e2a\u63a5\u53e3<\/td><td>\u4e0d\u652f\u6301\u7c7b\u7ee7\u627f\u591a\u4e2a\u62bd\u8c61\u7c7b<\/td><\/tr><tr><td><strong>\u5b57\u6bb5<\/strong><\/td><td>\u53ea\u80fd\u5305\u542b <code>public static final<\/code> \u5e38\u91cf<\/td><td>\u53ef\u4ee5\u5305\u542b\u5b9e\u4f8b\u5b57\u6bb5<\/td><\/tr><tr><td><strong>\u65b9\u6cd5<\/strong><\/td><td>\u53ea\u80fd\u5305\u542b\u62bd\u8c61\u65b9\u6cd5\u3001\u9ed8\u8ba4\u65b9\u6cd5\u3001\u9759\u6001\u65b9\u6cd5<\/td><td>\u53ef\u4ee5\u5305\u542b\u62bd\u8c61\u65b9\u6cd5\u548c\u5df2\u5b9e\u73b0\u7684\u65b9\u6cd5<\/td><\/tr><tr><td><strong>\u6784\u9020\u65b9\u6cd5<\/strong><\/td><td>\u6ca1\u6709\u6784\u9020\u65b9\u6cd5<\/td><td>\u53ef\u4ee5\u6709\u6784\u9020\u65b9\u6cd5<\/td><\/tr><tr><td><strong>\u5b9e\u73b0\u65b9\u5f0f<\/strong><\/td><td>\u901a\u8fc7 <code>implements<\/code> \u5173\u952e\u5b57\u5b9e\u73b0<\/td><td>\u901a\u8fc7 <code>extends<\/code> \u5173\u952e\u5b57\u7ee7\u627f<\/td><\/tr><tr><td><strong>\u7528\u9014<\/strong><\/td><td>\u7528\u4e8e\u5b9a\u4e49\u4e0d\u76f8\u5173\u7c7b\u4e4b\u95f4\u7684\u5171\u540c\u884c\u4e3a<\/td><td>\u7528\u4e8e\u7c7b\u4e4b\u95f4\u7684\u7ee7\u627f\u5173\u7cfb\uff0c\u63d0\u4f9b\u57fa\u672c\u7684\u884c\u4e3a\u548c\u72b6\u6001<\/td><\/tr><tr><td><strong>\u8bbf\u95ee\u4fee\u9970\u7b26<\/strong><\/td><td>\u65b9\u6cd5\u9ed8\u8ba4\u662f <code>public<\/code>\uff0c\u5b57\u6bb5\u9ed8\u8ba4\u662f <code>public static final<\/code><\/td><td>\u65b9\u6cd5\u53ef\u4ee5\u662f <code>protected<\/code> \u6216 <code>public<\/code>\uff0c\u5b57\u6bb5\u53ef\u4ee5\u662f <code>private<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. \u63a5\u53e3\u7684\u5e94\u7528\u573a\u666f<\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>3.1 \u56de\u8c03\u673a\u5236\u548c\u4e8b\u4ef6\u5904\u7406<\/strong><\/h4>\n\n\n\n<p>\u63a5\u53e3\u5728 Java \u4e2d\u5e7f\u6cdb\u5e94\u7528\u4e8e\u56de\u8c03\u673a\u5236\u548c\u4e8b\u4ef6\u5904\u7406\u3002\u4f8b\u5982\uff0c\u5728 GUI \u7f16\u7a0b\u4e2d\uff0c\u63a5\u53e3\u901a\u5e38\u88ab\u7528\u6765\u5b9a\u4e49\u4e8b\u4ef6\u76d1\u542c\u5668\u7684\u56de\u8c03\u65b9\u6cd5\u3002\u5728 Swing \u548c AWT \u4e2d\uff0c\u4e8b\u4ef6\u76d1\u542c\u5668\u5c31\u662f\u4e00\u4e2a\u5178\u578b\u7684\u63a5\u53e3\u5e94\u7528\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u5b9a\u4e49\u4e8b\u4ef6\u76d1\u542c\u63a5\u53e3\ninterface ButtonClickListener {\n    void onClick();\n}\n\nclass Button {\n    private ButtonClickListener listener;\n\n    public void setClickListener(ButtonClickListener listener) {\n        this.listener = listener;\n    }\n\n    public void click() {\n        listener.onClick();\n    }\n}\n\npublic class Test {\n    public static void main(String&#91;] args) {\n        Button button = new Button();\n        button.setClickListener(new ButtonClickListener() {\n            @Override\n            public void onClick() {\n                System.out.println(\"Button clicked!\");\n            }\n        });\n\n        button.click();  \/\/ \u8f93\u51fa \"Button clicked!\"\n    }\n}<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>3.2 \u7b56\u7565\u6a21\u5f0f\uff08Strategy Pattern\uff09<\/strong><\/h4>\n\n\n\n<p>\u7b56\u7565\u6a21\u5f0f\u662f\u4e00\u79cd\u884c\u4e3a\u578b\u8bbe\u8ba1\u6a21\u5f0f\uff0c\u5b83\u5141\u8bb8\u5728\u8fd0\u884c\u65f6\u9009\u62e9\u7b97\u6cd5\uff08\u7b56\u7565\uff09\u3002\u63a5\u53e3\u5728\u7b56\u7565\u6a21\u5f0f\u4e2d\u88ab\u7528\u6765\u5b9a\u4e49\u4e0d\u540c\u7684\u7b97\u6cd5\uff0c\u800c\u5177\u4f53\u7684\u7b56\u7565\u7c7b\u5b9e\u73b0\u8be5\u63a5\u53e3\uff0c\u4ece\u800c\u5b9e\u73b0\u4e0d\u540c\u7684\u884c\u4e3a\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u7b56\u7565\u63a5\u53e3\ninterface PaymentStrategy {\n    void pay(int amount);\n}\n\n\/\/ \u5177\u4f53\u7b56\u7565\uff1a\u652f\u4ed8\u5b9d\u652f\u4ed8\nclass AlipayPayment implements PaymentStrategy {\n    @Override\n    public void pay(int amount) {\n        System.out.println(\"Paid \" + amount + \" using Alipay.\");\n    }\n}\n\n\/\/ \u5177\u4f53\u7b56\u7565\uff1a\u5fae\u4fe1\u652f\u4ed8\nclass WeChatPayment implements PaymentStrategy {\n    @Override\n    public void pay(int amount) {\n        System.out.println(\"Paid \" + amount + \" using WeChat.\");\n    }\n}\n\nclass PaymentContext {\n    private PaymentStrategy paymentStrategy;\n\n    public PaymentContext(PaymentStrategy paymentStrategy) {\n        this.paymentStrategy = paymentStrategy;\n    }\n\n    public void executePayment(int amount) {\n        paymentStrategy.pay(amount);\n    }\n}\n\npublic class Test {\n    public static void main(String&#91;] args) {\n        PaymentContext context = new PaymentContext(new AlipayPayment());\n        context.executePayment(100);  \/\/ \u8f93\u51fa \"Paid 100 using Alipay.\"\n\n        context = new PaymentContext(new WeChatPayment());\n        context.executePayment(200);  \/\/ \u8f93\u51fa \"Paid 200 using WeChat.\"\n    }\n}<\/code><\/pre>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>3.3 \u63d2\u4ef6\u5f0f\u67b6\u6784<\/strong><\/h4>\n\n\n\n<p>\u63a5\u53e3\u5e7f\u6cdb\u5e94\u7528\u4e8e\u63d2\u4ef6\u5f0f\u67b6\u6784\u7684\u8bbe\u8ba1\u4e2d\u3002\u5728\u8fd9\u79cd\u67b6\u6784\u4e2d\uff0c\u6838\u5fc3\u7cfb\u7edf\u5b9a\u4e49\u4e86\u4e00\u4e9b\u63a5\u53e3\uff0c\u63d2\u4ef6\u901a\u8fc7\u5b9e\u73b0\u8fd9\u4e9b\u63a5\u53e3\u6765\u5b9e\u73b0\u529f\u80fd\u6269\u5c55\u3002\u8fd9\u6837\u53ef\u4ee5\u4f7f\u6838\u5fc3\u7cfb\u7edf\u4e0e\u63d2\u4ef6\u89e3\u8026\uff0c\u4fbf\u4e8e\u6269\u5c55\u548c\u7ef4\u62a4\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>4. \u603b\u7ed3<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u63a5\u53e3\u7684\u591a\u91cd\u7ee7\u627f<\/strong>\uff1aJava \u652f\u6301\u4e00\u4e2a\u7c7b\u5b9e\u73b0\u591a\u4e2a\u63a5\u53e3\uff0c\u53ef\u4ee5\u7ec4\u5408\u4e0d\u540c\u7684\u884c\u4e3a\u3002<\/li>\n\n\n\n<li><strong>\u9ed8\u8ba4\u65b9\u6cd5\u548c\u9759\u6001\u65b9\u6cd5<\/strong>\uff1aJava 8 \u4e4b\u540e\uff0c\u63a5\u53e3\u53ef\u4ee5\u5b9a\u4e49\u9ed8\u8ba4\u65b9\u6cd5\u548c\u9759\u6001\u65b9\u6cd5\uff0c\u589e\u5f3a\u4e86\u63a5\u53e3\u7684\u529f\u80fd\u3002<\/li>\n\n\n\n<li><strong>\u63a5\u53e3\u4e0e\u62bd\u8c61\u7c7b\u7684\u533a\u522b<\/strong>\uff1a\u63a5\u53e3\u66f4\u4fa7\u91cd\u4e8e\u5b9a\u4e49\u4e0d\u76f8\u5173\u7c7b\u4e4b\u95f4\u7684\u516c\u5171\u884c\u4e3a\uff0c\u800c\u62bd\u8c61\u7c7b\u5219\u7528\u4e8e\u5efa\u7acb\u7c7b\u4e4b\u95f4\u7684\u7ee7\u627f\u5173\u7cfb\u3002<\/li>\n\n\n\n<li><strong>\u63a5\u53e3\u7684\u5e94\u7528\u573a\u666f<\/strong>\uff1a\u63a5\u53e3\u5728\u56de\u8c03\u673a\u5236\u3001\u4e8b\u4ef6\u5904\u7406\u3001\u7b56\u7565\u6a21\u5f0f\u548c\u63d2\u4ef6\u5f0f\u67b6\u6784\u7b49\u573a\u666f\u4e2d\u90fd\u6709\u5e7f\u6cdb\u5e94\u7528\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u63a5\u53e3\u662f Java \u7f16\u7a0b\u7684\u4e00\u4e2a\u5f3a\u5927\u5de5\u5177\uff0c\u5c24\u5176\u5728\u9762\u5411\u5bf9\u8c61\u8bbe\u8ba1\u548c\u5927\u578b\u7cfb\u7edf\u5f00\u53d1\u4e2d\uff0c\u63a5\u53e3\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5b9e\u73b0\u66f4\u597d\u7684\u62bd\u8c61\u3001\u7075\u6d3b\u6027\u548c\u53ef\u7ef4\u62a4\u6027\u3002\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a5\u53e3\u662f Java \u4e2d\u7684\u4e00\u4e2a\u91cd\u8981\u6982\u5ff5\uff0c\u5b83\u5b9a\u4e49\u4e86\u4e00\u7ec4\u65b9\u6cd5\u7684\u96c6\u5408\uff0c\u4f46\u5e76\u4e0d\u63d0\u4f9b\u65b9\u6cd5\u7684\u5177\u4f53\u5b9e\u73b0\u3002\u63a5\u53e3\u662f Java \u4e2d\u5b9e\u73b0 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[68],"tags":[],"class_list":["post-2236","post","type-post","status-publish","format-standard","hentry","category-java"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2236","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=2236"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2236\/revisions"}],"predecessor-version":[{"id":2237,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/2236\/revisions\/2237"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=2236"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=2236"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=2236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}