{"id":126,"date":"2015-04-01T16:53:09","date_gmt":"2015-04-01T08:53:09","guid":{"rendered":"https:\/\/ai.zhousir.top\/?p=126"},"modified":"2026-08-18T12:09:27","modified_gmt":"2026-08-18T04:09:27","slug":"java%e6%8e%a5%e5%8f%a3%e5%92%8c%e6%8a%bd%e8%b1%a1%e7%b1%bb%e7%9a%84%e5%8c%ba%e5%88%ab","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=126","title":{"rendered":"Java\u63a5\u53e3\u548c\u62bd\u8c61\u7c7b\u7684\u533a\u522b"},"content":{"rendered":"
\n

\u7c7b\u662f\u5bf9\u8c61\u7684\u6a21\u677f\uff0c\u62bd\u8c61\u7c7b\u548c\u63a5\u53e3\u53ef\u4ee5\u770b\u6210\u5177\u4f53\u7c7b\u7684\u6a21\u677f\u3002\u63a5\u53e3\u4ece\u67d0\u79cd\u89d2\u5ea6\u770b\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u62bd\u8c61\u7c7b\uff0c\u76f8\u4f3c\u5904\u5f88\u591a\uff0c\u9009\u62e9\u65f6\u5bb9\u6613\u6df7\u3002\u5148\u770b\u76f8\u540c\u70b9\uff0c\u518d\u770b\u5404\u81ea\u64c5\u957f\u4ec0\u4e48\u3002<\/p>\n

\u4f7f\u7528\u5f15\u7528\u53d8\u91cf\u65f6\uff0c\u5c3d\u91cf\u7528\u7c7b\u7ed3\u6784\u7684\u62bd\u8c61\u5c42<\/strong>\uff0c\u8ba9\u65b9\u6cd5\u7684\u5b9a\u4e49\u548c\u5b9e\u73b0\u5206\u79bb\uff0c\u4ee3\u7801\u624d\u80fd\u677e\u6563\u8026\u5408\u3002<\/p>\n

<\/p>\n\n\n\n\n\n\n\n\n\n
\u5bf9\u6bd4<\/th>\n\u62bd\u8c61\u7c7b<\/th>\n\u63a5\u53e3<\/th>\n<\/tr>\n<\/thead>\n
\u5b9e\u4f8b\u5316<\/td>\n\u4e0d\u80fd new<\/td>\n\u4e0d\u80fd new<\/td>\n<\/tr>\n
\u62bd\u8c61\u65b9\u6cd5<\/td>\n\u53ef\u4ee5\u6709\uff0c\u4e5f\u53ef\u4ee5\u5168\u662f\u5177\u4f53\u65b9\u6cd5<\/td>\n\u7ecf\u5178\u5f62\u6001\u5168\u662f\u62bd\u8c61\u65b9\u6cd5<\/td>\n<\/tr>\n
\u4ee3\u7801\u590d\u7528<\/td>\n\u53ef\u63d0\u4f9b\u90e8\u5206\u5b9e\u73b0\uff0c\u5b50\u7c7b\u4e0d\u7528\u91cd\u590d\u5199<\/td>\nJava 8 \u524d\u4e0d\u80fd\u7ed9\u5b9e\u73b0\uff1b\u4e4b\u540e\u624d\u6709 default<\/td>\n<\/tr>\n
\u7ee7\u627f\u5173\u7cfb<\/td>\n\u4e00\u4e2a\u7c7b\u53ea\u80fd\u6709\u4e00\u4e2a\u76f4\u63a5\u7236\u7c7b<\/td>\n\u4e00\u4e2a\u7c7b\u53ef\u4ee5\u5b9e\u73b0\u591a\u4e2a\u63a5\u53e3<\/td>\n<\/tr>\n
\u9002\u7528<\/td>\n\u65e2\u8981\u7ea6\u675f\u884c\u4e3a\uff0c\u53c8\u8981\u63d0\u4f9b\u901a\u7528\u529f\u80fd<\/td>\n\u5b9a\u4e49\u884c\u4e3a\u6a21\u578b\u3001\u53ef\u63d2\u5165\u80fd\u529b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u4e00\u3001\u76f8\u540c\u70b9<\/h2>\n
    \n
  • \n
    \u90fd\u4ee3\u8868\u7c7b\u6811\u91cc\u7684\u62bd\u8c61\u5c42\uff0c\u9002\u5408\u4f5c\u4e3a\u5f15\u7528\u7c7b\u578b\u3002<\/section>\n<\/li>\n
  • \n
    \u90fd\u4e0d\u80fd\u88ab\u5b9e\u4f8b\u5316\u3002<\/section>\n<\/li>\n
  • \n
    \u90fd\u80fd\u5305\u542b\u62bd\u8c61\u65b9\u6cd5\uff1a\u63cf\u8ff0\u7cfb\u7edf\u63d0\u4f9b\u54ea\u4e9b\u529f\u80fd\uff0c\u4e0d\u5fc5\u5173\u5fc3\u5177\u4f53\u5b9e\u73b0\u3002<\/section>\n<\/li>\n<\/ul>\n

    \u4e8c\u3001\u62bd\u8c61\u7c7b\u80fd\u590d\u7528\u5b9e\u73b0\uff0c\u63a5\u53e3\u504f\u5951\u7ea6<\/h2>\n

    \u62bd\u8c61\u7c7b\u53ef\u4ee5\u4e3a\u90e8\u5206\u65b9\u6cd5\u63d0\u4f9b\u5b9e\u73b0\uff0c\u907f\u514d\u5b50\u7c7b\u91cd\u590d\u7f16\u5199\uff0c\u8fd9\u662f\u5b83\u7684\u4f18\u52bf\u3002\u63a5\u53e3\u5728 Java 8 \u4e4b\u524d\u53ea\u80fd\u5305\u542b\u62bd\u8c61\u65b9\u6cd5\uff0c\u4e0d\u80fd\u5e26\u4efb\u4f55\u5b9e\u73b0\uff08\u4e4b\u540e\u53ef\u7528 default \u65b9\u6cd5\u8865\u516c\u5171\u884c\u4e3a\uff0c\u4f46\u7ecf\u5178\u5bf9\u6bd4\u4ecd\u6309\u201c\u7eaf\u5951\u7ea6\u201d\u6765\u7406\u89e3\uff09\u3002<\/p>\n

    public abstract class A {\n    public abstract void method1();\n    public void method2() {\n        \/\/ A method2\uff1a\u5b50\u7c7b\u76f4\u63a5\u590d\u7528\n    }\n}\npublic class B extends A {\n    public void method1() { \/* B method1 *\/ }\n}\npublic class C extends A {\n    public void method1() { \/* C method1 *\/ }\n}<\/code><\/pre>\n
    A \u7684\u5b50\u7c7b B\u3001C \u4e0d\u5fc5\u91cd\u5199 method2\uff0cA \u4e3a\u5b83\u4eec\u63d0\u4f9b\u4e86\u516c\u5171\u529f\u80fd\uff0c\u4e5f\u7ea6\u675f\u4e86\u884c\u4e3a\u3002method1 \u6ca1\u6709\u5b9e\u73b0\uff0cB\u3001C \u6309\u81ea\u5df1\u7684\u7279\u70b9\u5199\uff0c\u4f53\u73b0\u677e\u6563\u8026\u5408\u3002<\/p>\n
    public interface A {\n    public void method1();\n    public void method2();\n}\npublic class B implements A {\n    public void method1() { \/* B method1 *\/ }\n    public void method2() { \/* B method2 *\/ }\n}\npublic class C implements A {\n    public void method1() { \/* C method1 *\/ }\n    public void method2() { \/* C method2 *\/ }\n}<\/code><\/pre>\n
    \u63a5\u53e3 A \u65e0\u6cd5\u4e3a B\u3001C \u63d0\u4f9b\u73b0\u6210\u7684 method2\uff0c\u4e24\u4e2a\u65b9\u6cd5\u90fd\u5f97\u5404\u81ea\u5b9e\u73b0\u4e00\u904d\u3002A \u7ea6\u675f\u7684\u662f\u201c\u5fc5\u987b\u6709\u8fd9\u4e9b\u65b9\u6cd5\u201d\uff0c\u4e0d\u7ba1\u5177\u4f53\u600e\u4e48\u5199\u3002<\/p>\n
    \u4e09\u3001\u5355\u7ee7\u627f vs \u591a\u5b9e\u73b0<\/h2>\n
    \u4e00\u4e2a\u7c7b\u53ea\u80fd\u7ee7\u627f\u4e00\u4e2a\u76f4\u63a5\u7236\u7c7b\uff08\u53ef\u4ee5\u662f\u62bd\u8c61\u7c7b\uff09\uff0c\u4f46\u53ef\u4ee5\u5b9e\u73b0\u591a\u4e2a\u63a5\u53e3\uff0c\u8fd9\u662f\u63a5\u53e3\u7684\u4f18\u52bf\u3002<\/p>\n
    interface A { public void method2(); }\ninterface B { public void method1(); }\nclass C implements A, B {\n    public void method1() { \/* C method1 *\/ }\n    public void method2() { \/* C method2 *\/ }\n}\nA a = new C();\nB b = new C();<\/code><\/pre>\n
    C \u8fd8\u53ef\u4ee5\u7ee7\u7eed\u5b9e\u73b0\u522b\u7684\u63a5\u53e3\u3002\u82e5\u6539\u6210\u4e24\u4e2a\u62bd\u8c61\u7c7b\u53e0\u5728\u4e00\u8d77\uff0cC \u7ee7\u627f\u4e86 B\uff08B \u518d\u7ee7\u627f A\uff09\u4e4b\u540e\uff0c\u5c31\u6ca1\u6709\u673a\u4f1a\u518d\u7ee7\u627f\u5176\u4ed6\u7236\u7c7b\u4e86\uff1a<\/p>\n
    abstract class A {\n    public abstract void method1();\n}\nabstract class B extends A {\n    public abstract void method2();\n}\nclass C extends B {\n    public void method1() { \/* C method1 *\/ }\n    public void method2() { \/* C method2 *\/ }\n}<\/code><\/pre>\n
    \u56db\u3001\u600e\u4e48\u9009<\/h2>\n
    \u884c\u4e3a\u6a21\u578b\u5e94\u901a\u8fc7\u63a5\u53e3\u800c\u4e0d\u662f\u62bd\u8c61\u7c7b\u6765\u5b9a\u4e49\uff0c\u6240\u4ee5\u901a\u5e38\u4f18\u5148\u9009\u63a5\u53e3\uff0c\u5c11\u7528\u62bd\u8c61\u7c7b\u3002\u9009\u62bd\u8c61\u7c7b\u7684\u5178\u578b\u60c5\u51b5\u662f\uff1a\u65e2\u8981\u5b9a\u4e49\u5b50\u7c7b\u884c\u4e3a\uff0c\u53c8\u8981\u4e3a\u5b50\u7c7b\u63d0\u4f9b\u901a\u7528\u5b9e\u73b0\u3002<\/p>\n
    \n
    \u4e00\u53e5\u8bdd\u603b\u7ed3\uff1a\u8981\u53ef\u63d2\u5165\u7684\u80fd\u529b\u5951\u7ea6\u7528\u63a5\u53e3\uff08\u53ef\u591a\u5b9e\u73b0\uff09\uff1b\u65e2\u8981\u5951\u7ea6\u53c8\u8981\u628a\u516c\u5171\u4ee3\u7801\u653e\u8fdb\u7236\u7c7b\uff0c\u7528\u62bd\u8c61\u7c7b\uff08\u53ea\u80fd\u5355\u7ee7\u627f\uff09\u3002<\/strong><\/p>\n<\/blockquote>\n<\/section>\n","protected":false},"excerpt":{"rendered":"
    \u7c7b\u662f\u5bf9\u8c61\u7684\u6a21\u677f\uff0c\u62bd\u8c61\u7c7b\u548c\u63a5\u53e3\u53ef\u4ee5\u770b\u6210\u5177\u4f53\u7c7b\u7684\u6a21\u677f\u3002\u63a5\u53e3\u4ece\u67d0\u79cd\u89d2\u5ea6\u770b\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u62bd\u8c61\u7c7b\uff0c\u76f8\u4f3c\u5904\u5f88\u591a\uff0c\u9009\u62e9\u65f6\u5bb9\u6613\u6df7 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[17],"tags":[43,39,40],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/126"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=126"}],"version-history":[{"count":2,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/126\/revisions"}],"predecessor-version":[{"id":329,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/126\/revisions\/329"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=126"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=126"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}