{"id":34964,"date":"2024-11-26T10:23:53","date_gmt":"2024-11-26T02:23:53","guid":{"rendered":"https:\/\/fwq.ai\/blog\/34964\/"},"modified":"2024-11-26T10:23:53","modified_gmt":"2024-11-26T02:23:53","slug":"java%e4%ba%8c%e7%bb%b4%e6%95%b0%e7%bb%84%e4%b8%ba%e7%a9%ba%e6%80%8e%e4%b9%88%e8%a1%a8%e7%a4%ba","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/34964\/","title":{"rendered":"java\u4e8c\u7ef4\u6570\u7ec4\u4e3a\u7a7a\u600e\u4e48\u8868\u793a"},"content":{"rendered":"

\n java \u4e2d\u4e8c\u7ef4\u6570\u7ec4\u4e3a\u7a7a\u7684\u8868\u793a\u65b9\u6cd5\u662f\u5c06\u5168\u90e8\u5143\u7d20\u8bbe\u7f6e\u4e3a null\uff0c\u5373\uff1aint[][] emptyarray = new int0;\uff0c\u8be5\u6570\u7ec4\u5927\u5c0f\u4e3a 0\uff0c\u6ca1\u6709\u884c\u6216\u5217\u3002\n<\/p><\/blockquote>\n

\"java\u4e8c\u7ef4\u6570\u7ec4\u4e3a\u7a7a\u600e\u4e48\u8868\u793a\u63d2\u56fe\"<\/p>\n

Java \u4e2d\u4e8c\u7ef4\u6570\u7ec4\u4e3a\u7a7a\u7684\u8868\u793a\u65b9\u6cd5<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u4e8c\u7ef4\u6570\u7ec4\u53ef\u4ee5\u901a\u8fc7\u5c06\u5176\u5168\u90e8\u5143\u7d20\u8bbe\u7f6e\u4e3a null \u6765\u8868\u793a\u4e3a\u7a7a\uff1a<\/p>\n

int[][] emptyArray = new int[0][0];<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f7f\u7528\u8fd9\u79cd\u65b9\u6cd5\u65f6\uff0c\u6570\u7ec4\u7684\u5927\u5c0f\u4e3a 0\uff0c\u5373\u6ca1\u6709\u884c\u6216\u5217\u3002<\/p>\n
\u65b9\u6cd5\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a<\/strong><\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
    \n
  • new int[0][0] \u521b\u5efa\u4e86\u4e00\u4e2a\u5927\u5c0f\u4e3a 0 \u7684\u4e8c\u7ef4\u6570\u7ec4\uff0c\u6ca1\u6709\u884c\u6216\u5217\u3002<\/li>\n
  • \u7531\u4e8e\u6570\u7ec4\u4e2d\u6ca1\u6709\u5143\u7d20\uff0c\u56e0\u6b64\u6240\u6709\u5143\u7d20\u90fd\u9690\u5f0f\u8bbe\u7f6e\u4e3a null\u3002<\/li>\n
  • \u8fd9\u79cd\u8868\u793a\u6cd5\u6e05\u6670\u7b80\u6d01\uff0c\u6613\u4e8e\u7406\u89e3\u3002<\/li>\n<\/ul>\n
    \u5176\u4ed6\u65b9\u6cd5\uff1a<\/strong><\/p>\n
    \u867d\u7136\u4e0a\u8ff0\u65b9\u6cd5\u662f\u8868\u793a\u7a7a\u4e8c\u7ef4\u6570\u7ec4\u7684\u9996\u9009\u65b9\u6cd5\uff0c\u4f46\u8fd8\u6709\u4e00\u4e9b\u5176\u4ed6\u65b9\u6cd5\uff0c\u5982\uff1a<\/p>\n
      \n
    • \u5c06\u6570\u7ec4\u58f0\u660e\u4e3a null\uff1aint[][] emptyArray = null;\u3002<\/li>\n
    • \u4f7f\u7528\u7a7a\u5f15\u7528\uff1aint[][] emptyArray = new int[][] {};\u3002<\/li>\n
    • \u4f7f\u7528\u7a7a\u5b50\u6570\u7ec4\uff1aint[][] emptyArray = {{}, {}};\u3002<\/li>\n<\/ul>\n
      \u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8fd9\u4e9b\u65b9\u6cd5\u53ef\u80fd\u4f1a\u4ea7\u751f\u6b67\u4e49\u6216\u5f15\u53d1\u5f02\u5e38\uff0c\u56e0\u6b64\u4e0d\u63a8\u8350\u4f7f\u7528\u3002<\/p>\n
      \u4ee5\u4e0a\u5c31\u662fjava\u4e8c\u7ef4\u6570\u7ec4\u4e3a\u7a7a\u600e\u4e48\u8868\u793a\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":"
      java \u4e2d\u4e8c\u7ef4\u6570\u7ec4\u4e3a\u7a7a\u7684\u8868\u793a\u65b9\u6cd5\u662f\u5c06\u5168\u90e8\u5143\u7d20\u8bbe\u7f6e\u4e3a null\uff0c\u5373\uff1aint[][] emptyarray = new int0;\uff0c\u8be5\u6570\u7ec4\u5927\u5c0f\u4e3a 0\uff0c\u6ca1\u6709\u884c\u6216\u5217\u3002 Java \u4e2d\u4e8c\u7ef4\u6570\u7ec4\u4e3a\u7a7a\u7684\u8868\u793a\u65b9\u6cd5 \u5728 Java \u4e2d\uff0c\u4e8c\u7ef4\u6570\u7ec4\u53ef\u4ee5\u901a\u8fc7\u5c06\u5176\u5168\u90e8\u5143\u7d20\u8bbe\u7f6e\u4e3a null \u6765\u8868\u793a\u4e3a\u7a7a\uff1a int[][] emptyArray = new int[0][0]; \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528\u8fd9\u79cd\u65b9\u6cd5\u65f6\uff0c\u6570\u7ec4\u7684\u5927\u5c0f\u4e3a 0\uff0c\u5373\u6ca1\u6709\u884c\u6216\u5217\u3002 \u65b9\u6cd5\u7684\u8be6\u7ec6\u8bf4\u660e\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b new int[0][0] \u521b\u5efa\u4e86\u4e00\u4e2a\u5927\u5c0f\u4e3a 0 \u7684\u4e8c\u7ef4\u6570\u7ec4\uff0c\u6ca1\u6709\u884c\u6216\u5217\u3002 \u7531\u4e8e\u6570\u7ec4\u4e2d\u6ca1\u6709\u5143\u7d20\uff0c\u56e0\u6b64\u6240\u6709\u5143\u7d20\u90fd\u9690\u5f0f\u8bbe\u7f6e\u4e3a null\u3002 \u8fd9\u79cd\u8868\u793a\u6cd5\u6e05\u6670\u7b80\u6d01\uff0c\u6613\u4e8e\u7406\u89e3\u3002 \u5176\u4ed6\u65b9\u6cd5\uff1a \u867d\u7136\u4e0a\u8ff0\u65b9\u6cd5\u662f\u8868\u793a\u7a7a\u4e8c\u7ef4\u6570\u7ec4\u7684\u9996\u9009\u65b9\u6cd5\uff0c\u4f46\u8fd8\u6709\u4e00\u4e9b\u5176\u4ed6\u65b9\u6cd5\uff0c\u5982\uff1a \u5c06\u6570\u7ec4\u58f0\u660e\u4e3a null\uff1aint[][] emptyArray = null;\u3002 \u4f7f\u7528\u7a7a\u5f15\u7528\uff1aint[][] emptyArray = new int[][] {};\u3002 \u4f7f\u7528\u7a7a\u5b50\u6570\u7ec4\uff1aint[][] emptyArray = {{}, {}};\u3002 \u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8fd9\u4e9b\u65b9\u6cd5\u53ef\u80fd\u4f1a\u4ea7\u751f\u6b67\u4e49\u6216\u5f15\u53d1\u5f02\u5e38\uff0c\u56e0\u6b64\u4e0d\u63a8\u8350\u4f7f\u7528\u3002 \u4ee5\u4e0a\u5c31\u662fjava\u4e8c\u7ef4\u6570\u7ec4\u4e3a\u7a7a\u600e\u4e48\u8868\u793a\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-34964","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34964","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=34964"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34964\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=34964"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=34964"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=34964"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}