{"id":34935,"date":"2024-11-26T15:37:19","date_gmt":"2024-11-26T07:37:19","guid":{"rendered":"https:\/\/fwq.ai\/blog\/34935\/"},"modified":"2024-11-26T15:37:19","modified_gmt":"2024-11-26T07:37:19","slug":"%e6%80%8e%e4%b9%88%e5%a3%b0%e6%98%8e%e4%b8%80%e4%b8%aa%e7%a9%ba%e7%9a%84%e6%95%b0%e7%bb%84java","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/34935\/","title":{"rendered":"\u600e\u4e48\u58f0\u660e\u4e00\u4e2a\u7a7a\u7684\u6570\u7ec4java"},"content":{"rendered":"

\n \u5728 java \u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\u58f0\u660e\u4e00\u4e2a\u7a7a\u7684\u6570\u7ec4\uff1a\u4f7f\u7528 new \u5173\u952e\u5b57\u548c\u65b9\u62ec\u53f7\u6307\u5b9a\u6570\u7ec4\u7684\u7c7b\u578b\u548c\u5927\u5c0f\u3002\u4f8b\u5982\uff0cint[] arr = new int[0]; \u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a\u96f6\u7684\u7a7a\u6574\u578b\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n

\"\u600e\u4e48\u58f0\u660e\u4e00\u4e2a\u7a7a\u7684\u6570\u7ec4java\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u5728 Java \u4e2d\u58f0\u660e\u4e00\u4e2a\u7a7a\u7684\u6570\u7ec4<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u58f0\u660e\u4e00\u4e2a\u7a7a\u7684\u6570\u7ec4\uff1a<\/p>\n

int[] arr = new int[0];<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6b64\u793a\u4f8b\u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a\u96f6\u7684\u7a7a\u6574\u578b\u6570\u7ec4\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528 new \u5173\u952e\u5b57\u548c\u65b9\u62ec\u53f7\u6307\u5b9a\u6570\u7ec4\u7684\u7c7b\u578b\u548c\u5927\u5c0f\u3002<\/p>\n
\u8be6\u7ec6\u8bf4\u660e<\/strong><\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
    \n
  •  new \u5173\u952e\u5b57\uff1a<\/strong>\u7528\u4e8e\u521b\u5efa\u65b0\u6570\u7ec4\u3002<\/li>\n
  •  \u65b9\u62ec\u53f7\uff1a<\/strong>\u6307\u5b9a\u6570\u7ec4\u7684\u7c7b\u578b\u548c\u5927\u5c0f\u3002<\/li>\n
  •  0\uff1a<\/strong>\u8868\u793a\u521b\u5efa\u957f\u5ea6\u4e3a\u96f6\u7684\u6570\u7ec4\u3002<\/li>\n<\/ul>\n
    \u793a\u4f8b\u7528\u6cd5<\/strong><\/p>\n
    \u4ee5\u4e0b\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u58f0\u660e\u548c\u4f7f\u7528\u7a7a\u7684\u6570\u7ec4\uff1a<\/p>\n
    int[] arr = new int[0];\nSystem.out.println(\"\u6570\u7ec4\u957f\u5ea6\uff1a\" + arr.length); \/\/ \u8f93\u51fa\uff1a0<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u8f93\u51fa\u4e3a 0\uff0c\u8868\u793a\u6570\u7ec4\u4e3a\u7a7a\u3002<\/p>\n
    \u6ce8\u610f\uff1a<\/strong><\/p>\n
      \n
    • Java \u6570\u7ec4\u662f\u56fa\u5b9a\u5927\u5c0f\u7684\uff0c\u56e0\u6b64\u4e00\u65e6\u521b\u5efa\u5c31\u4e0d\u80fd\u66f4\u6539\u5176\u5927\u5c0f\u3002<\/li>\n
    • \u7a7a\u6570\u7ec4\u4ecd\u7136\u662f\u4e00\u4e2a\u6570\u7ec4\u5bf9\u8c61\uff0c\u56e0\u6b64\u60a8\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u65b9\u6cd5\uff08\u4f8b\u5982 length\uff09\u5bf9\u5176\u8fdb\u884c\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n
      \u4ee5\u4e0a\u5c31\u662f\u600e\u4e48\u58f0\u660e\u4e00\u4e2a\u7a7a\u7684\u6570\u7ec4java\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":"
      \u5728 java \u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\u58f0\u660e\u4e00\u4e2a\u7a7a\u7684\u6570\u7ec4\uff1a\u4f7f\u7528 new \u5173\u952e\u5b57\u548c\u65b9\u62ec\u53f7\u6307\u5b9a\u6570\u7ec4\u7684\u7c7b\u578b\u548c\u5927\u5c0f\u3002\u4f8b\u5982\uff0cint[] arr = new int[0]; \u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a\u96f6\u7684\u7a7a\u6574\u578b\u6570\u7ec4\u3002 \u5982\u4f55\u5728 Java \u4e2d\u58f0\u660e\u4e00\u4e2a\u7a7a\u7684\u6570\u7ec4 \u5728 Java \u4e2d\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u58f0\u660e\u4e00\u4e2a\u7a7a\u7684\u6570\u7ec4\uff1a int[] arr = new int[0]; \u767b\u5f55\u540e\u590d\u5236 \u6b64\u793a\u4f8b\u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a\u96f6\u7684\u7a7a\u6574\u578b\u6570\u7ec4\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528 new \u5173\u952e\u5b57\u548c\u65b9\u62ec\u53f7\u6307\u5b9a\u6570\u7ec4\u7684\u7c7b\u578b\u548c\u5927\u5c0f\u3002 \u8be6\u7ec6\u8bf4\u660e \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b new \u5173\u952e\u5b57\uff1a\u7528\u4e8e\u521b\u5efa\u65b0\u6570\u7ec4\u3002 \u65b9\u62ec\u53f7\uff1a\u6307\u5b9a\u6570\u7ec4\u7684\u7c7b\u578b\u548c\u5927\u5c0f\u3002 0\uff1a\u8868\u793a\u521b\u5efa\u957f\u5ea6\u4e3a\u96f6\u7684\u6570\u7ec4\u3002 \u793a\u4f8b\u7528\u6cd5 \u4ee5\u4e0b\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u58f0\u660e\u548c\u4f7f\u7528\u7a7a\u7684\u6570\u7ec4\uff1a int[] arr = new int[0]; System.out.println(“\u6570\u7ec4\u957f\u5ea6\uff1a” + arr.length); \/\/ \u8f93\u51fa\uff1a0 \u767b\u5f55\u540e\u590d\u5236 \u8f93\u51fa\u4e3a 0\uff0c\u8868\u793a\u6570\u7ec4\u4e3a\u7a7a\u3002 \u6ce8\u610f\uff1a Java \u6570\u7ec4\u662f\u56fa\u5b9a\u5927\u5c0f\u7684\uff0c\u56e0\u6b64\u4e00\u65e6\u521b\u5efa\u5c31\u4e0d\u80fd\u66f4\u6539\u5176\u5927\u5c0f\u3002 \u7a7a\u6570\u7ec4\u4ecd\u7136\u662f\u4e00\u4e2a\u6570\u7ec4\u5bf9\u8c61\uff0c\u56e0\u6b64\u60a8\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u65b9\u6cd5\uff08\u4f8b\u5982 length\uff09\u5bf9\u5176\u8fdb\u884c\u64cd\u4f5c\u3002 \u4ee5\u4e0a\u5c31\u662f\u600e\u4e48\u58f0\u660e\u4e00\u4e2a\u7a7a\u7684\u6570\u7ec4java\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-34935","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34935","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=34935"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34935\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=34935"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=34935"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=34935"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}