{"id":725,"date":"2024-07-01T14:24:08","date_gmt":"2024-07-01T06:24:08","guid":{"rendered":"https:\/\/iichen.cn\/?p=725"},"modified":"2024-07-01T14:24:08","modified_gmt":"2024-07-01T06:24:08","slug":"725","status":"publish","type":"post","link":"https:\/\/iichen.cn\/?p=725","title":{"rendered":"Java-\u5206\u6d3e"},"content":{"rendered":"<pre><code class=\"language-java line-numbers\">public class \u5206\u6d3e {\n    public static void main(String[] args) {\n        Human man = new Man();\n        \/\/ \u91cd\u5199\u662f \u865a\u51fd\u6570\u7684\u6e90\u7531\uff08invokevirtual \u6240\u4ee5\u5bf9\u5b57\u6bb5\u65e0\u6548\uff09\uff0c\u770b\u5b9e\u9645\u7c7b\u578b \u5373\u2018\u540e\u8005\u2019\n        man.printCode();\n        \/\/ man.code\u662f\u4e0d\u662f\u65b9\u6cd5\uff0c\u6240\u4ee5\u8f93\u51fa\u662f Human.code\u53733\n        System.out.println(\"code \" + man.code);\n\/\/      Human women = new Women();\n        \/\/ \u91cd\u8f7d \u770b\u7f16\u8bd1\u7c7b\u578b \u5373\u2018\u524d\u8005\u2019\uff08\u5bf9\u4e8echar\u7c7b\u578b\u4f9d\u6b21\uff1achar &gt; int &gt; long &gt; float &gt; double &gt; \u53d8\u957f\u7c7b\u578b\uff09\n\/\/      sayHello(man);\n\/\/      sayHello(women);\n    }\n\n    static void sayHello(Human humam) {\n        System.out.println(\"human sayHello\");\n    }\n\n\n    static void sayHello(Man man) {\n        System.out.println(\"man sayHello\");\n    }\n\n\n    static void sayHello(Women women) {\n        System.out.println(\"women sayHello\");\n    }\n\n\n}\n\nclass Human {\n    public int code = 2;\n\n    public Human() {\n        code = 3;\n        printCode();\n    }\n\n    void printCode() {\n        System.out.println(\"Human code \" + code);\n    }\n\n}\n\nclass Man extends Human {\n\n    public int code = 0;\n\n    public Man() {\n        code = 1;\n        printCode();\n    }\n\n    void printCode() {\n        System.out.println(\"Man code \" + code);\n    }\n\n}\n\nclass Women extends Human {\n\n}\n<\/code><\/pre>\n<ul>\n<li>&#8220;\u8986\u76d6&#8221;\u79c1\u6709\u65b9\u6cd5<\/li>\n<\/ul>\n<pre><code class=\"language-java line-numbers\">public class \u5206\u6d3e2 {\n    \/\/ \u58f0\u660e\u4e3aprivate\uff0c\u8f93\u51fa\u4e3a Shape\n    private void print() {\n        System.out.println(\"Shape\");\n    }\n    public static void main(String[] args) {\n        \u5206\u6d3e2 s = new Derived();\n        s.print();\n    }\n}\nclass Derived extends \u5206\u6d3e2{\n    public void print() {\n        System.out.println(\"Circle\");\n    }\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>public class \u5206\u6d3e { public static void main(String[] args [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13,8],"tags":[],"class_list":["post-725","post","type-post","status-publish","format-standard","hentry","category-java","category-8"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.4 - 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