{"id":40259,"date":"2024-11-26T17:16:34","date_gmt":"2024-11-26T09:16:34","guid":{"rendered":"https:\/\/fwq.ai\/blog\/40259\/"},"modified":"2024-11-26T17:16:34","modified_gmt":"2024-11-26T09:16:34","slug":"java%e5%ad%97%e7%ac%a6%e6%80%8e%e4%b9%88%e8%be%93%e5%85%a5%e5%ad%97%e7%ac%a6%e4%b8%b2%e6%95%b0%e7%bb%84%e7%9a%84%e9%95%bf%e5%ba%a6%e9%99%90%e5%88%b6","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/40259\/","title":{"rendered":"java\u5b57\u7b26\u600e\u4e48\u8f93\u5165\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u957f\u5ea6\u9650\u5236"},"content":{"rendered":"<blockquote><p>\n  java \u5b57\u7b26\u6570\u7ec4\u7684\u957f\u5ea6\u9650\u5236\u4e3a integer.max_value\uff0c\u5373 2,147,483,647\u3002\u6b64\u9650\u5236\u56e0\u5b57\u7b26\u6570\u7ec4\u7684\u56fa\u5b9a\u5927\u5c0f\u548c unicode \u5b57\u7b26\u7684 2 \u5b57\u8282\u5927\u5c0f\u800c\u4ea7\u751f\u3002\u7531\u4e8e\u5185\u5b58\u548c\u6027\u80fd\u8003\u8651\uff0c\u5b9e\u9645\u53ef\u7528\u7684\u5b57\u7b26\u6570\u7ec4\u5927\u5c0f\u901a\u5e38\u5c0f\u4e8e\u6b64\u9650\u5236\u3002\u5bf9\u4e8e\u5927\u591a\u6570\u573a\u666f\uff0c\u5b57\u7b26\u6570\u7ec4\u7684\u957f\u5ea6\u90fd\u5f88\u5c0f\uff0c\u56e0\u6b64\u957f\u5ea6\u9650\u5236\u4e0d\u662f\u5e38\u89c1\u95ee\u9898\u3002\u6ce8\u610f\uff0c\u5bf9\u4e8e\u9700\u8981\u5b58\u50a8\u5927\u91cf\u5b57\u7b26\u7684\u60c5\u51b5\uff0c\u53ef\u4ee5\u4f7f\u7528 string \u7b49\u52a8\u6001\u8c03\u6574\u5927\u5c0f\u7684\u6570\u636e\u7ed3\u6784\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/18\/2024111814580028577.jpg\" class=\"aligncenter\" title=\"java\u5b57\u7b26\u600e\u4e48\u8f93\u5165\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u957f\u5ea6\u9650\u5236\u63d2\u56fe\" alt=\"java\u5b57\u7b26\u600e\u4e48\u8f93\u5165\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u957f\u5ea6\u9650\u5236\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u5b57\u7b26\u6570\u7ec4\u7684\u957f\u5ea6\u9650\u5236<\/strong><\/p>\n<p>Java \u5b57\u7b26\u6570\u7ec4\u7684\u957f\u5ea6\u9650\u5236\u4e3a Integer.MAX_VALUE\uff0c\u5373 2,147,483,647\u3002<\/p>\n<p><strong>\u8be6\u7ec6\u4fe1\u606f:<\/strong><\/p>\n<ul>\n<li>Java \u5b57\u7b26\u6570\u7ec4\u662f\u4e00\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8 Unicode \u5b57\u7b26\u3002<\/li>\n<li>\u6bcf\u4e2a\u5b57\u7b26\u5360\u7528 2 \u4e2a\u5b57\u8282\uff0c\u56e0\u6b64 Java \u5b57\u7b26\u6570\u7ec4\u7684\u6700\u5927\u5927\u5c0f\u4e3a (2,147,483,647 * 2) = 4,294,967,294 \u5b57\u8282\u3002<\/li>\n<li>\u7531\u4e8e\u5185\u5b58\u9650\u5236\u548c\u6027\u80fd\u8003\u8651\uff0c\u5b9e\u9645\u53ef\u7528\u7684\u5b57\u7b26\u6570\u7ec4\u5927\u5c0f\u901a\u5e38\u5c0f\u4e8e\u6b64\u9650\u5236\u3002<\/li>\n<li>\u5bf9\u4e8e\u5927\u591a\u6570\u5b9e\u9645\u573a\u666f\uff0c\u5b57\u7b26\u6570\u7ec4\u7684\u957f\u5ea6\u90fd\u5f88\u5c0f\uff0c\u56e0\u6b64\u957f\u5ea6\u9650\u5236\u4e0d\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u95ee\u9898\u3002<\/li>\n<\/ul>\n<p><strong>\u6ce8\u610f:<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<ul>\n<li>\u5982\u679c\u60a8\u9700\u8981\u5b58\u50a8\u5927\u91cf\u5b57\u7b26\uff0c\u53ef\u4ee5\u4f7f\u7528\u5176\u4ed6\u6570\u636e\u7ed3\u6784\uff0c\u5982 String\uff0c\u5b83\u53ef\u4ee5\u52a8\u6001\u8c03\u6574\u5176\u5927\u5c0f\u3002<\/li>\n<li>\u5b57\u7b26\u6570\u7ec4\u7684\u957f\u5ea6\u9650\u5236\u5728 Java 9 \u4e2d\u5f97\u5230\u589e\u5f3a\uff0c\u589e\u52a0\u4e86 Character.MAX_CODE_POINT \u7ea6\u4e3a 21 \u4ebf\u4e2a\u4ee3\u7801\u70b9\u7684\u652f\u6301\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u5b57\u7b26\u600e\u4e48\u8f93\u5165\u7684\u957f\u5ea6\u9650\u5236\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>java \u5b57\u7b26\u6570\u7ec4\u7684\u957f\u5ea6\u9650\u5236\u4e3a integer.max_value\uff0c\u5373 2,147,483,647\u3002\u6b64\u9650\u5236\u56e0\u5b57\u7b26\u6570\u7ec4\u7684\u56fa\u5b9a\u5927\u5c0f\u548c unicode \u5b57\u7b26\u7684 2 \u5b57\u8282\u5927\u5c0f\u800c\u4ea7\u751f\u3002\u7531\u4e8e\u5185\u5b58\u548c\u6027\u80fd\u8003\u8651\uff0c\u5b9e\u9645\u53ef\u7528\u7684\u5b57\u7b26\u6570\u7ec4\u5927\u5c0f\u901a\u5e38\u5c0f\u4e8e\u6b64\u9650\u5236\u3002\u5bf9\u4e8e\u5927\u591a\u6570\u573a\u666f\uff0c\u5b57\u7b26\u6570\u7ec4\u7684\u957f\u5ea6\u90fd\u5f88\u5c0f\uff0c\u56e0\u6b64\u957f\u5ea6\u9650\u5236\u4e0d\u662f\u5e38\u89c1\u95ee\u9898\u3002\u6ce8\u610f\uff0c\u5bf9\u4e8e\u9700\u8981\u5b58\u50a8\u5927\u91cf\u5b57\u7b26\u7684\u60c5\u51b5\uff0c\u53ef\u4ee5\u4f7f\u7528 string \u7b49\u52a8\u6001\u8c03\u6574\u5927\u5c0f\u7684\u6570\u636e\u7ed3\u6784\u3002 Java \u5b57\u7b26\u6570\u7ec4\u7684\u957f\u5ea6\u9650\u5236 Java \u5b57\u7b26\u6570\u7ec4\u7684\u957f\u5ea6\u9650\u5236\u4e3a Integer.MAX_VALUE\uff0c\u5373 2,147,483,647\u3002 \u8be6\u7ec6\u4fe1\u606f: Java \u5b57\u7b26\u6570\u7ec4\u662f\u4e00\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8 Unicode \u5b57\u7b26\u3002 \u6bcf\u4e2a\u5b57\u7b26\u5360\u7528 2 \u4e2a\u5b57\u8282\uff0c\u56e0\u6b64 Java \u5b57\u7b26\u6570\u7ec4\u7684\u6700\u5927\u5927\u5c0f\u4e3a (2,147,483,647 * 2) = 4,294,967,294 \u5b57\u8282\u3002 \u7531\u4e8e\u5185\u5b58\u9650\u5236\u548c\u6027\u80fd\u8003\u8651\uff0c\u5b9e\u9645\u53ef\u7528\u7684\u5b57\u7b26\u6570\u7ec4\u5927\u5c0f\u901a\u5e38\u5c0f\u4e8e\u6b64\u9650\u5236\u3002 \u5bf9\u4e8e\u5927\u591a\u6570\u5b9e\u9645\u573a\u666f\uff0c\u5b57\u7b26\u6570\u7ec4\u7684\u957f\u5ea6\u90fd\u5f88\u5c0f\uff0c\u56e0\u6b64\u957f\u5ea6\u9650\u5236\u4e0d\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u95ee\u9898\u3002 \u6ce8\u610f: \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u5982\u679c\u60a8\u9700\u8981\u5b58\u50a8\u5927\u91cf\u5b57\u7b26\uff0c\u53ef\u4ee5\u4f7f\u7528\u5176\u4ed6\u6570\u636e\u7ed3\u6784\uff0c\u5982 String\uff0c\u5b83\u53ef\u4ee5\u52a8\u6001\u8c03\u6574\u5176\u5927\u5c0f\u3002 \u5b57\u7b26\u6570\u7ec4\u7684\u957f\u5ea6\u9650\u5236\u5728 Java 9 \u4e2d\u5f97\u5230\u589e\u5f3a\uff0c\u589e\u52a0\u4e86 Character.MAX_CODE_POINT \u7ea6\u4e3a 21 \u4ebf\u4e2a\u4ee3\u7801\u70b9\u7684\u652f\u6301\u3002 \u4ee5\u4e0a\u5c31\u662fjava\u5b57\u7b26\u600e\u4e48\u8f93\u5165\u7684\u957f\u5ea6\u9650\u5236\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-40259","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/40259","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=40259"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/40259\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=40259"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=40259"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=40259"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}