{"id":1395,"date":"2025-08-21T16:29:35","date_gmt":"2025-08-21T08:29:35","guid":{"rendered":"https:\/\/zero-zl.cn\/?p=1395"},"modified":"2025-08-21T22:20:54","modified_gmt":"2025-08-21T14:20:54","slug":"java%e5%86%85%e9%83%a8%e7%b1%bb","status":"publish","type":"post","link":"https:\/\/zero-zl.cn\/index.php\/2025\/08\/21\/java%e5%86%85%e9%83%a8%e7%b1%bb\/","title":{"rendered":"Java\u5185\u90e8\u7c7b"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\" id=\"_1\u3001\u9759\u6001\u5185\u90e8\u7c7b\u4e0e\u975e\u9759\u6001\u5185\u90e8\u7c7b\u6709\u4ec0\u4e48\u533a\u522b\"><a href=\"#_1\u3001\u9759\u6001\u5185\u90e8\u7c7b\u4e0e\u975e\u9759\u6001\u5185\u90e8\u7c7b\u6709\u4ec0\u4e48\u533a\u522b\">1\u3001\u9759\u6001\u5185\u90e8\u7c7b\u4e0e\u975e\u9759\u6001\u5185\u90e8\u7c7b\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/a><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<ul class=\"wp-block-list\">\n<li>\u9759\u6001\u5185\u90e8\u7c7b\u53ef\u4ee5\u6709\u9759\u6001\u6210\u5458(\u65b9\u6cd5\uff0c\u5c5e\u6027)\uff0c\u800c\u975e\u9759\u6001\u5185\u90e8\u7c7b\u5219\u4e0d\u80fd\u6709\u9759\u6001\u6210\u5458(\u65b9\u6cd5\uff0c\u5c5e\u6027)\u3002<\/li>\n\n\n\n<li>\u9759\u6001\u5185\u90e8\u7c7b\u53ea\u80fd\u591f\u8bbf\u95ee\u5916\u90e8\u7c7b\u7684\u9759\u6001\u6210\u5458\u548c\u9759\u6001\u65b9\u6cd5,\u800c\u975e\u9759\u6001\u5185\u90e8\u7c7b\u5219\u53ef\u4ee5\u8bbf\u95ee\u5916\u90e8\u7c7b\u7684\u6240\u6709\u6210\u5458(\u65b9\u6cd5\uff0c\u5c5e\u6027)\u3002<\/li>\n\n\n\n<li>\u5b9e\u4f8b\u5316\u9759\u6001\u5185\u90e8\u7c7b\u4e0e\u975e\u9759\u6001\u5185\u90e8\u7c7b\u7684\u65b9\u5f0f\u4e0d\u540c<\/li>\n\n\n\n<li>\u8c03\u7528\u5185\u90e8\u9759\u6001\u7c7b\u7684\u65b9\u6cd5\u6216\u9759\u6001\u53d8\u91cf,\u53ef\u4ee5\u901a\u8fc7\u7c7b\u540d\u76f4\u63a5\u8c03\u7528<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"_2\u3001\u9759\u6001\u5185\u90e8\u7c7b\u5982\u4f55\u5b9a\u4e49\"><a href=\"#_2\u3001\u9759\u6001\u5185\u90e8\u7c7b\u5982\u4f55\u5b9a\u4e49\">2\u3001\u9759\u6001\u5185\u90e8\u7c7b\u5982\u4f55\u5b9a\u4e49\uff1f<\/a><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u5b9a\u4e49\u5728\u7c7b\u5185\u90e8\u7684\u9759\u6001\u7c7b\uff0c\u5c31\u662f\u9759\u6001\u5185\u90e8\u7c7b\u3002<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-code\"><code>public class Out{\n    public static int a;\n    private int b;\n    \n    public static class Inner{\n        public void print(){\n            System.out.println(a);\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<ol class=\"wp-block-list\">\n<li>\u9759\u6001\u5185\u90e8\u7c7b\u53ef\u4ee5\u8bbf\u95ee\u5916\u90e8\u7c7b\u6240\u6709\u7684\u9759\u6001\u53d8\u91cf\u548c\u65b9\u6cd5\uff0c\u5373\u4f7f\u662f private \u7684\u4e5f\u4e00\u6837\u3002<\/li>\n\n\n\n<li>\u9759\u6001\u5185\u90e8\u7c7b\u548c\u4e00\u822c\u7c7b\u4e00\u81f4\uff0c\u53ef\u4ee5\u5b9a\u4e49\u9759\u6001\u53d8\u91cf\u3001\u65b9\u6cd5\uff0c\u6784\u9020\u65b9\u6cd5\u7b49\u3002<\/li>\n\n\n\n<li>\u5176\u5b83\u7c7b\u4f7f\u7528\u9759\u6001\u5185\u90e8\u7c7b\u9700\u8981\u4f7f\u7528\u201c\u5916\u90e8\u7c7b.\u9759\u6001\u5185\u90e8\u7c7b\u201d\u65b9\u5f0f\uff0c\u5982\u4e0b\u6240\u793a\uff1aOut.Inner inner = new Out.Inner();inner.print();<\/li>\n\n\n\n<li>Java\u96c6\u5408\u7c7bHashMap\u5185\u90e8\u5c31\u6709\u4e00\u4e2a\u9759\u6001\u5185\u90e8\u7c7bEntry\u3002Entry\u662fHashMap\u5b58\u653e\u5143\u7d20\u7684\u62bd\u8c61\uff0cHashMap \u5185\u90e8\u7ef4\u62a4 Entry \u6570\u7ec4\u7528\u4e86\u5b58\u653e\u5143<br>\u7d20\uff0c\u4f46\u662f Entry \u5bf9\u4f7f\u7528\u8005\u662f\u900f\u660e\u7684\u3002\u50cf\u8fd9\u79cd\u548c\u5916\u90e8\u7c7b\u5173\u7cfb\u5bc6\u5207\u7684\uff0c\u4e14\u4e0d\u4f9d\u8d56\u5916\u90e8\u7c7b\u5b9e\u4f8b\u7684\uff0c\u90fd\u53ef\u4ee5\u4f7f\u7528\u9759\u6001\u5185\u90e8\u7c7b\u3002<\/li>\n<\/ol>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"_3\u3001\u4ec0\u4e48\u662f\u6210\u5458\u5185\u90e8\u7c7b\"><a href=\"#_3\u3001\u4ec0\u4e48\u662f\u6210\u5458\u5185\u90e8\u7c7b\">3\u3001\u4ec0\u4e48\u662f\u6210\u5458\u5185\u90e8\u7c7b\uff1f<\/a><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u5b9a\u4e49\u5728\u7c7b\u5185\u90e8\u7684\u975e\u9759\u6001\u7c7b\uff0c\u5c31\u662f\u6210\u5458\u5185\u90e8\u7c7b\u3002\u6210\u5458\u5185\u90e8\u7c7b\u4e0d\u80fd\u5b9a\u4e49\u9759\u6001\u65b9\u6cd5\u548c\u53d8\u91cf\uff08final\u4fee\u9970\u7684\u9664\u5916\uff09\u3002\u8fd9\u662f\u56e0\u4e3a\u6210\u5458\u5185\u90e8\u7c7b\u662f\u975e\u9759\u6001\u7684\uff0c\u7c7b\u521d\u59cb\u5316\u7684\u65f6\u5019\u5148\u521d\u59cb\u5316\u9759\u6001\u6210\u5458\uff0c\u5982\u679c\u5141\u8bb8\u6210\u5458\u5185\u90e8\u7c7b\u5b9a\u4e49\u9759\u6001\u53d8\u91cf\uff0c\u90a3\u4e48\u6210\u5458\u5185\u90e8\u7c7b\u7684\u9759\u6001\u53d8\u91cf\u521d\u59cb\u5316\u987a\u5e8f\u662f\u6709\u6b67\u4e49\u7684\u3002<\/p>\n<\/blockquote>\n\n\n\n<pre class=\"wp-block-code\"><code>public class Out{\n    public static int a;\n    private int b;\n    \n    public class Inner{\n        public void print(){\n            System.out.println(a);\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"_4\u3001anonymous-inner-class-\u533f\u540d\u5185\u90e8\u7c7b-\u662f\u5426\u53ef\u4ee5\u7ee7\u627f\u5176\u5b83\u7c7b-\u662f\u5426\u53ef\u4ee5\u5b9e\u73b0\u63a5\u53e3\"><a href=\"#_4\u3001anonymous-inner-class-\u533f\u540d\u5185\u90e8\u7c7b-\u662f\u5426\u53ef\u4ee5\u7ee7\u627f\u5176\u5b83\u7c7b-\u662f\u5426\u53ef\u4ee5\u5b9e\u73b0\u63a5\u53e3\">4\u3001Anonymous Inner Class(\u533f\u540d\u5185\u90e8\u7c7b)\u662f\u5426\u53ef\u4ee5\u7ee7\u627f\u5176\u5b83\u7c7b\uff1f\u662f\u5426\u53ef\u4ee5\u5b9e\u73b0\u63a5\u53e3\uff1f<\/a><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u53ef\u4ee5\u7ee7\u627f\u5176\u4ed6\u7c7b\u6216\u5b9e\u73b0\u5176\u4ed6\u63a5\u53e3\uff0c\u5728 Swing \u7f16\u7a0b\u548c Android \u5f00\u53d1\u4e2d\u5e38\u7528\u6b64\u65b9\u5f0f\u6765\u5b9e\u73b0\u4e8b\u4ef6\u76d1\u542c\u548c\u56de\u8c03\u3002<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"_5\u3001\u5185\u90e8\u7c7b\u53ef\u4ee5\u5f15\u7528\u5b83\u7684\u5305\u542b\u7c7b-\u5916\u90e8\u7c7b-\u7684\u6210\u5458\u5417-\u6709\u6ca1\u6709\u4ec0\u4e48\u9650\u5236\"><a href=\"#_5\u3001\u5185\u90e8\u7c7b\u53ef\u4ee5\u5f15\u7528\u5b83\u7684\u5305\u542b\u7c7b-\u5916\u90e8\u7c7b-\u7684\u6210\u5458\u5417-\u6709\u6ca1\u6709\u4ec0\u4e48\u9650\u5236\">5\u3001\u5185\u90e8\u7c7b\u53ef\u4ee5\u5f15\u7528\u5b83\u7684\u5305\u542b\u7c7b\uff08\u5916\u90e8\u7c7b\uff09\u7684\u6210\u5458\u5417\uff1f\u6709\u6ca1\u6709\u4ec0\u4e48\u9650\u5236\uff1f<\/a><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u4e00\u4e2a\u5185\u90e8\u7c7b\u5bf9\u8c61\u53ef\u4ee5\u8bbf\u95ee\u521b\u5efa\u5b83\u7684\u5916\u90e8\u7c7b\u5bf9\u8c61\u7684\u6210\u5458\uff0c\u5305\u62ec\u79c1\u6709\u6210\u5458\u3002<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"_6\u3001\u662f\u5426\u53ef\u4ee5\u4ece\u4e00\u4e2a\u9759\u6001-static-\u65b9\u6cd5\u5185\u90e8\u53d1\u51fa\u5bf9\u975e\u9759\u6001-non-static-\u65b9\u6cd5\u7684\u8c03\u7528\"><a href=\"#_6\u3001\u662f\u5426\u53ef\u4ee5\u4ece\u4e00\u4e2a\u9759\u6001-static-\u65b9\u6cd5\u5185\u90e8\u53d1\u51fa\u5bf9\u975e\u9759\u6001-non-static-\u65b9\u6cd5\u7684\u8c03\u7528\">6\u3001\u662f\u5426\u53ef\u4ee5\u4ece\u4e00\u4e2a\u9759\u6001\uff08static\uff09\u65b9\u6cd5\u5185\u90e8\u53d1\u51fa\u5bf9\u975e\u9759\u6001\uff08non-static\uff09\u65b9\u6cd5\u7684\u8c03\u7528\uff1f<\/a><\/h2>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u4e0d\u53ef\u4ee5\uff0c \u9759\u6001\u65b9\u6cd5\u53ea\u80fd\u8bbf\u95ee\u9759\u6001\u6210\u5458\uff0c\u56e0\u4e3a\u975e\u9759\u6001\u65b9\u6cd5\u7684\u8c03\u7528\u8981\u5148\u521b\u5efa\u5bf9\u8c61\uff0c 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[&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":234,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[103,104],"tags":[],"class_list":["post-1395","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-java"],"_links":{"self":[{"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/posts\/1395","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1395"}],"version-history":[{"count":1,"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/posts\/1395\/revisions"}],"predecessor-version":[{"id":1396,"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/posts\/1395\/revisions\/1396"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/media\/234"}],"wp:attachment":[{"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1395"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1395"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zero-zl.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1395"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}