{"id":66812,"date":"2025-05-03T09:24:49","date_gmt":"2025-05-03T01:24:49","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66812\/"},"modified":"2025-05-03T09:24:49","modified_gmt":"2025-05-03T01:24:49","slug":"java%e6%95%b0%e7%bb%84%e7%9a%84%e6%9f%90%e4%b8%80%e5%88%97%e6%80%8e%e4%b9%88%e8%8e%b7%e5%8f%96-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66812\/","title":{"rendered":"java\u6570\u7ec4\u7684\u67d0\u4e00\u5217\u600e\u4e48\u83b7\u53d6"},"content":{"rendered":"

\n \u8981\u83b7\u53d6 java \u6570\u7ec4\u4e2d\u7684\u67d0\u4e00\u5217\uff0c\u9700\u9075\u5faa\u4ee5\u4e0b\u6b65\u9aa4\uff1a\u786e\u5b9a\u5217\u7d22\u5f15\u3002\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\u3002\u904d\u5386\u5916\u5c42\u6570\u7ec4\uff08\u884c\uff09\u3002\u4f7f\u7528\u5217\u7d22\u5f15\u83b7\u53d6\u5217\u503c\u5e76\u5b58\u50a8\u5728\u65b0\u6570\u7ec4\u4e2d\u3002\n<\/p><\/blockquote>\n

\"java\u6570\u7ec4\u7684\u67d0\u4e00\u5217\u600e\u4e48\u83b7\u53d6\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u83b7\u53d6 Java \u6570\u7ec4\u4e2d\u7684\u67d0\u4e00\u5217<\/strong><\/p>\n

\u83b7\u53d6 Java \u6570\u7ec4\u4e2d\u7684\u67d0\u4e00\u5217\u6d89\u53ca\u4f7f\u7528\u4e8c\u7ef4\u6570\u7ec4\u7684\u6982\u5ff5\u3002\u4e8c\u7ef4\u6570\u7ec4\u662f\u4e00\u4e2a\u6570\u7ec4\u7684\u6570\u7ec4\uff0c\u5176\u4e2d\u6bcf\u4e2a\u5143\u7d20\u672c\u8eab\u53c8\u662f\u4e00\u4e2a\u6570\u7ec4\u3002<\/p>\n

\u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u67d0\u4e00\u5217\u7684\u6b65\u9aa4\uff1a<\/strong><\/p>\n

    \n
  1. \u786e\u5b9a\u5217\u7d22\u5f15\uff1a<\/strong>\u786e\u5b9a\u8981\u83b7\u53d6\u7684\u5217\u7684\u7d22\u5f15\uff0c\u4ece 0 \u5f00\u59cb\u3002<\/li>\n
  2. \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff1a<\/strong>\u521b\u5efa\u4e00\u4e2a\u4e0e\u8981\u83b7\u53d6\u7684\u5217\u957f\u5ea6\u76f8\u540c\u7684\u65b0\u6570\u7ec4\u3002<\/li>\n
  3. \u904d\u5386\u5916\u5c42\u6570\u7ec4\uff1a<\/strong>\u4f7f\u7528 for \u5faa\u73af\u904d\u5386\u4e8c\u7ef4\u6570\u7ec4\u7684\u5916\u5c42\u6570\u7ec4\uff08\u884c\uff09\u3002<\/li>\n
  4. \u83b7\u53d6\u5217\u503c\uff1a<\/strong>\u5728\u5185\u5c42\u5faa\u73af\u4e2d\uff0c\u4f7f\u7528\u5217\u7d22\u5f15\u4ece\u884c\u4e2d\u83b7\u53d6\u6240\u9700\u7684\u5217\u503c\uff0c\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u65b0\u6570\u7ec4\u4e2d\u3002<\/li>\n<\/ol>\n

    \u793a\u4f8b\u4ee3\u7801\uff1a<\/strong><\/p>\n

    \u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n

    int[][] twoDimensionalArray = {\n    {1, 2, 3},\n    {4, 5, 6},\n    {7, 8, 9}\n};\n\nint columnToGet = 1; \/\/ \u83b7\u53d6\u7b2c 2 \u5217\n\nint[] columnArray = new int[twoDimensionalArray.length];\n\nfor (int i = 0; i < twoDimensionalArray.length; i++) {\n    columnArray[i] = twoDimensionalArray[i][columnToGet];\n}\n\n\/\/ \u6253\u5370\u83b7\u53d6\u7684\u5217\nfor (int value : columnArray) {\n    System.out.println(value);\n}<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u8f93\u51fa\uff1a<\/strong><\/p>\n
    2\n5\n8<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u7684\u67d0\u4e00\u5217\u600e\u4e48\u83b7\u53d6\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u8981\u83b7\u53d6 java \u6570\u7ec4\u4e2d\u7684\u67d0\u4e00\u5217\uff0c\u9700\u9075\u5faa\u4ee5\u4e0b\u6b65\u9aa4\uff1a\u786e\u5b9a\u5217\u7d22\u5f15\u3002\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\u3002\u904d\u5386\u5916\u5c42\u6570\u7ec4\uff08\u884c\uff09\u3002\u4f7f\u7528\u5217\u7d22\u5f15\u83b7\u53d6\u5217\u503c\u5e76\u5b58\u50a8\u5728\u65b0\u6570\u7ec4\u4e2d\u3002 \u5982\u4f55\u83b7\u53d6 Java \u6570\u7ec4\u4e2d\u7684\u67d0\u4e00\u5217 \u83b7\u53d6 Java \u6570\u7ec4\u4e2d\u7684\u67d0\u4e00\u5217\u6d89\u53ca\u4f7f\u7528\u4e8c\u7ef4\u6570\u7ec4\u7684\u6982\u5ff5\u3002\u4e8c\u7ef4\u6570\u7ec4\u662f\u4e00\u4e2a\u6570\u7ec4\u7684\u6570\u7ec4\uff0c\u5176\u4e2d\u6bcf\u4e2a\u5143\u7d20\u672c\u8eab\u53c8\u662f\u4e00\u4e2a\u6570\u7ec4\u3002 \u83b7\u53d6\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u67d0\u4e00\u5217\u7684\u6b65\u9aa4\uff1a \u786e\u5b9a\u5217\u7d22\u5f15\uff1a\u786e\u5b9a\u8981\u83b7\u53d6\u7684\u5217\u7684\u7d22\u5f15\uff0c\u4ece 0 \u5f00\u59cb\u3002 \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff1a\u521b\u5efa\u4e00\u4e2a\u4e0e\u8981\u83b7\u53d6\u7684\u5217\u957f\u5ea6\u76f8\u540c\u7684\u65b0\u6570\u7ec4\u3002 \u904d\u5386\u5916\u5c42\u6570\u7ec4\uff1a\u4f7f\u7528 for \u5faa\u73af\u904d\u5386\u4e8c\u7ef4\u6570\u7ec4\u7684\u5916\u5c42\u6570\u7ec4\uff08\u884c\uff09\u3002 \u83b7\u53d6\u5217\u503c\uff1a\u5728\u5185\u5c42\u5faa\u73af\u4e2d\uff0c\u4f7f\u7528\u5217\u7d22\u5f15\u4ece\u884c\u4e2d\u83b7\u53d6\u6240\u9700\u7684\u5217\u503c\uff0c\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u65b0\u6570\u7ec4\u4e2d\u3002 \u793a\u4f8b\u4ee3\u7801\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[][] twoDimensionalArray = { {1, 2, 3}, {4, 5, 6}, {7, 8, 9} }; int columnToGet = 1; \/\/ \u83b7\u53d6\u7b2c 2 \u5217 int[] columnArray = new int[twoDimensionalArray.length]; for (int i = 0; i < twoDimensionalArray.length; […]<\/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-66812","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66812","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=66812"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66812\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66812"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66812"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66812"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}