{"id":243,"date":"2024-02-06T10:23:35","date_gmt":"2024-02-06T02:23:35","guid":{"rendered":"https:\/\/forelink.top\/?p=243"},"modified":"2024-07-07T17:55:55","modified_gmt":"2024-07-07T09:55:55","slug":"java%ef%bc%88%e6%9e%9a%e4%b8%be%ef%bc%89","status":"publish","type":"post","link":"https:\/\/forelink.top\/index.php\/2024\/02\/06\/java%ef%bc%88%e6%9e%9a%e4%b8%be%ef%bc%89\/","title":{"rendered":"Java\uff08\u679a\u4e3e\uff09"},"content":{"rendered":"\n

\u679a\u4e3e<\/h2>\n\n\n\n

\u679a\u4e3e\uff08enum\uff09\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u7c7b\uff08\u5305\u62ec\u63a5\u53e3\uff09,\u7528\u4ee5\u8fdb\u884c\u4fe1\u606f\u5206\u7c7b\u3002<\/p>\n\n\n\n

\u679a\u4e3e\u7c7b\u7b2c\u4e00\u884c\u5fc5\u987b\u7f57\u5217\u679a\u4e3e\u5bf9\u8c61\u7684\u540d\u5b57\uff0c\u5728\u7f16\u8bd1\u65f6\u4f1a\u88ab\u7f16\u8bd1\u6210\u5e38\u91cf
\u679a\u4e3e\u7c7b\u7684\u6784\u9020\u5668\u90fd\u662f\u79c1\u6709\u7684\uff0c\u679a\u4e3e\u7c7b\u4e0d\u80fd\u5bf9\u5916\u6784\u9020\u5bf9\u8c61<\/p>\n\n\n\n

\/\/ \u82e5A\u662f\u4e00\u4e2a\u679a\u4e3e\u7c7b\nA a = new A();\/\/\u4f1a\u62a5\u9519<\/code><\/pre>\n\n\n\n
\u679a\u4e3e\u5bf9\u8c61\u7684\u8c03\u7528\u65b9\u6cd5<\/p>\n\n\n\n
A a = A.X;\n\/\/a\u8fd9\u662f\u5373\u4e3a\u679a\u4e3e\u5bf9\u8c61X<\/code><\/pre>\n\n\n\n

\u679a\u4e3e\u90fd\u662f\u6700\u7ec8\u7c7b\uff0c\u4e0d\u80fd\u88ab\u7ee7\u627f
\u679a\u4e3e\u7c7b\u4e2d\uff0c\u4ece\u7b2c\u4e8c\u884c\u5f00\u59cb\uff0c\u53ef\u4ee5\u5b9a\u4e49\u5176\u4ed6\u6210\u5458<\/p>\n\n\n\n
\u4fee\u9970\u7b26 enum \u7c7b\u540d{\n    X,Y,Z;\/\/\u679a\u4e3e\u5bf9\u8c61\u7684\u540d\u79f0\uff0c\u4ee5\u9017\u53f7\u5206\u9694\n    private String name;\n    \/\/getter && setter\n}<\/code><\/pre>\n\n\n\n
\u679a\u4e3e\u7c7b\u63d0\u4f9b\u4e00\u4e9b\u989d\u5916\u7684 api<\/p>\n\n\n\n
A[] a2 = A.values();\nA a3 = A.valueOf(\"Y\");\n\/\/\u8f93\u51fa\u5bf9\u8c61\nSystem.out.println(a3.name());\n\/\/\u8f93\u51fa\u5bf9\u8c61\u5728\u679a\u4e3e\u7c7b\u7684\u7d22\u5f15 \u4e0b\u6807\u4ece0\u5f00\u59cb\nSystem.out.println(a3.ordinal());<\/code><\/pre>\n\n\n\n
\u62bd\u8c61\u679a\u4e3e<\/h2>\n\n\n\n
\u5728\u679a\u4e3e\u7c7b\u4e2d\u5b9a\u4e49\u4e00\u4e2a\u62bd\u8c61\u65b9\u6cd5, \u679a\u4e3e\u5bf9\u8c61\u9700\u8981\u91cd\u5199\u62bd\u8c61\u65b9\u6cd5\u3002
\u6784\u9020\u5668\u4e2d\u5982\u679c\u6709\u53c2\u6570\uff0c\u5219\u679a\u4e3e\u5bf9\u8c61\u4e2d\u4e5f\u9700\u8981\u6709\u53c2\u6570\u3002<\/p>\n\n\n\n
import java.sql.SQLOutput;\n\npublic enum B {\n    X(){\n        @Override\n        public void go(){\n            System.out.println(\"X created\");\n        }\n    },\n    Y(\"Mr. Y\"){\n        @Override\n        public void go(){\n            System.out.println(\"Y created\");\n            System.out.println(getName()+\" is running~~\");\n        }\n    };\n    public abstract void go();\n\n    B() {\n        System.out.println(\"enum class B created\");\n    }\n    B(String name){\n        this.name = name;\n    }\n    private String name;\n\n    public String getName() {\n        return name;\n    }\n\n    public void setName(String name) {\n        this.name = name;\n    }\n}\n<\/code><\/pre>\n\n\n\n
\u679a\u4e3e\u7684\u5e94\u7528\u573a\u666f<\/h2>\n\n\n\n
\u7528\u6765\u8868\u793a\u4e00\u7ec4\u4fe1\u606f\uff0c\u7136\u540e\u4f5c\u4e3a\u53c2\u6570\u8fdb\u884c\u4f20\u8f93
    \u9009\u62e9\u5b9a\u4e49\u4e00\u4e2a\u4e00\u4e2a\u7684\u5e38\u91cf\u6765\u5c55\u793a\u4e00\u7ec4\u4fe1\u606f\uff0c\u5e76\u4f5c\u4e3a\u53c2\u6570\u4f20\u8f93<\/p>\n\n\n\n
\u53c2\u6570\u503c\u4e0d\u53d7\u7ea6\u675f
    \u9009\u62e9\u5b9a\u4e49\u679a\u4e3e\u8868\u793a\u4e00\u7ec4\u4fe1\u606f\uff0c\u5e76\u4f5c\u4e3a\u53c2\u6570\u4f20\u8f93<\/p>\n\n\n\n
\u4ee3\u7801\u53ef\u8bfb\u6027\u597d\uff0c\u53c2\u6570\u503c\u5f97\u5230\u4e86\u7ea6\u675f\uff0c\u5bf9\u4f7f\u7528\u8005\u66f4\u53cb\u597d\uff0c\u5efa\u8bae\u4f7f\u7528\u3002<\/p>\n\n\n\n
\u793a\u4f8b\uff1a<\/p>\n\n\n\n
public class Test {\n    public static void main(String[] args) {\n        check(sex.BOY);\n        \/\/\u4fe1\u606f\u6807\u8bb0 \u5206\u7c7b\n    }\n    public static void check(sex sex_){\n        switch(sex_){\n            case BOY:\n                System.out.println(\"boi\");\n                break;\n            case GIRL:\n                System.out.println(\"gro\");\n                break;\n        }\n    }\n}<\/code><\/pre>\n\n\n\n
\u679a\u4e3e \u4e0e \u5e38\u91cf \u6ca1\u6709\u76f8\u4e92\u6dd8\u6c70\uff0c\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\u6839\u636e\u9700\u6c42\u4f7f\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u679a\u4e3e \u679a\u4e3e\uff08enum\uff09\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u7c7b\uff08\u5305\u62ec\u63a5\u53e3\uff09,\u7528\u4ee5\u8fdb\u884c\u4fe1\u606f\u5206\u7c7b\u3002 \u679a\u4e3e\u7c7b\u7b2c\u4e00\u884c\u5fc5\u987b\u7f57\u5217\u679a\u4e3e\u5bf9\u8c61\u7684\u540d\u5b57\uff0c\u5728\u7f16 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[21,1],"tags":[],"class_list":["post-243","post","type-post","status-publish","format-standard","hentry","category-java","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/posts\/243","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/comments?post=243"}],"version-history":[{"count":5,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/posts\/243\/revisions"}],"predecessor-version":[{"id":284,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/posts\/243\/revisions\/284"}],"wp:attachment":[{"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/media?parent=243"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/categories?post=243"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/forelink.top\/index.php\/wp-json\/wp\/v2\/tags?post=243"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}