{"id":39180,"date":"2024-11-26T10:31:19","date_gmt":"2024-11-26T02:31:19","guid":{"rendered":"https:\/\/fwq.ai\/blog\/39180\/"},"modified":"2024-11-26T10:31:19","modified_gmt":"2024-11-26T02:31:19","slug":"java%e4%ba%8c%e7%bb%b4%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e5%ad%98%e5%a4%9a%e4%b8%aa","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/39180\/","title":{"rendered":"java\u4e8c\u7ef4\u6570\u7ec4\u600e\u4e48\u5b58\u591a\u4e2a"},"content":{"rendered":"

\n \u5728 java \u4e2d\uff0c\u4e8c\u7ef4\u6570\u7ec4\u53ef\u5b58\u50a8\u591a\u4e2a\u5bf9\u8c61\uff0c\u65b9\u6cd5\u5305\u62ec\uff1a\u521b\u5efa\u5e76\u521d\u59cb\u5316\u6570\u7ec4\uff0c\u6307\u5b9a\u884c\u6570\u548c\u5217\u6570\u3002\u904d\u5386\u6570\u7ec4\uff0c\u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26\u5c06\u5bf9\u8c61\u5b58\u50a8\u5728\u5143\u7d20\u4e2d\u3002\u904d\u5386\u6570\u7ec4\uff0c\u4f7f\u7528\u76f8\u540c\u5faa\u73af\u8bbf\u95ee\u5b58\u50a8\u7684\u5bf9\u8c61\u3002\n<\/p><\/blockquote>\n

\"java\u4e8c\u7ef4\u6570\u7ec4\u600e\u4e48\u5b58\u591a\u4e2a\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u5728 Java \u4e2d\u5411\u4e8c\u7ef4\u6570\u7ec4\u5b58\u50a8\u591a\u4e2a\u5bf9\u8c61<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u4e8c\u7ef4\u6570\u7ec4\u53ef\u4ee5\u5b58\u50a8\u591a\u4e2a\u5bf9\u8c61\u3002\u4ee5\u4e0b\u662f\u5b9e\u73b0\u6b64\u76ee\u7684\u7684\u6b65\u9aa4\uff1a<\/p>\n

    \n
  1. \u521b\u5efa\u548c\u521d\u59cb\u5316\u6570\u7ec4\uff1a<\/strong>
    \u58f0\u660e\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4\uff0c\u4f8b\u5982 Object[][] array = new Object[rows][cols];\uff0c\u5176\u4e2d rows \u548c cols \u5206\u522b\u8868\u793a\u884c\u6570\u548c\u5217\u6570\u3002<\/li>\n
  2. \n

    \u904d\u5386\u6570\u7ec4\uff1a<\/strong>
    \u4f7f\u7528\u5d4c\u5957\u5faa\u73af\u904d\u5386\u6570\u7ec4\u7684\u6bcf\u4e2a\u5143\u7d20\uff0c\u4f8b\u5982\uff1a<\/p>\n

    for (int i = 0; i < array.length; i++) {\n    for (int j = 0; j < array[i].length; j++) {\n        \/\/ \u6570\u7ec4\u5143\u7d20\u7684\u5185\u5bb9\u8bbe\u7f6e\u5728\u8fd9\u91cc\n    }\n}<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n
  3. \n
    \u5b58\u50a8\u5bf9\u8c61\uff1a<\/strong>
    \u5728\u904d\u5386\u6570\u7ec4\u65f6\uff0c\u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26\u5c06\u5bf9\u8c61\u5b58\u50a8\u5728\u5143\u7d20\u4e2d\uff0c\u4f8b\u5982\uff1a<\/p>\n
    \u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
    array[i][j] = someObject;<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n
  4. \n
    \u8bbf\u95ee\u5bf9\u8c61\uff1a<\/strong>
    \u4f7f\u7528\u540c\u6837\u7684\u5d4c\u5957\u5faa\u73af\u904d\u5386\u6570\u7ec4\uff0c\u60a8\u53ef\u4ee5\u50cf\u8fd9\u6837\u8bbf\u95ee\u5b58\u50a8\u7684\u5bf9\u8c61\uff1a<\/p>\n
    Object retrievedObject = array[i][j];<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ol>\n
    \u793a\u4f8b\u4ee3\u7801\uff1a<\/strong><\/p>\n
    \/\/ \u521b\u5efa\u548c\u521d\u59cb\u5316 3 \u884c 4 \u5217\u7684\u4e8c\u7ef4\u6570\u7ec4\nObject[][] array = new Object[3][4];\n\n\/\/ \u5b58\u50a8\u5bf9\u8c61\narray[0][0] = \"String\";\narray[1][1] = 123;\narray[2][2] = new Employee(\"John Doe\");\n\n\/\/ \u8bbf\u95ee\u5bf9\u8c61\nSystem.out.println(array[0][0]); \/\/ \u8f93\u51fa \"String\"\nSystem.out.println(array[1][1]); \/\/ \u8f93\u51fa 123\nSystem.out.println(array[2][2]); \/\/ \u8f93\u51fa Employee \u5bf9\u8c61<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u901a\u8fc7\u9075\u5faa\u8fd9\u4e9b\u6b65\u9aa4\uff0c\u60a8\u53ef\u4ee5\u5c06\u591a\u4e2a\u5bf9\u8c61\u5b58\u50a8\u5728 Java \u4e2d\u7684\u4e8c\u7ef4\u6570\u7ec4\u4e2d\u3002<\/p>\n
    \u4ee5\u4e0a\u5c31\u662fjava\u4e8c\u7ef4\u6570\u7ec4\u600e\u4e48\u5b58\u591a\u4e2a\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\u4e8c\u7ef4\u6570\u7ec4\u53ef\u5b58\u50a8\u591a\u4e2a\u5bf9\u8c61\uff0c\u65b9\u6cd5\u5305\u62ec\uff1a\u521b\u5efa\u5e76\u521d\u59cb\u5316\u6570\u7ec4\uff0c\u6307\u5b9a\u884c\u6570\u548c\u5217\u6570\u3002\u904d\u5386\u6570\u7ec4\uff0c\u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26\u5c06\u5bf9\u8c61\u5b58\u50a8\u5728\u5143\u7d20\u4e2d\u3002\u904d\u5386\u6570\u7ec4\uff0c\u4f7f\u7528\u76f8\u540c\u5faa\u73af\u8bbf\u95ee\u5b58\u50a8\u7684\u5bf9\u8c61\u3002 \u5982\u4f55\u5728 Java \u4e2d\u5411\u4e8c\u7ef4\u6570\u7ec4\u5b58\u50a8\u591a\u4e2a\u5bf9\u8c61 \u5728 Java \u4e2d\uff0c\u4e8c\u7ef4\u6570\u7ec4\u53ef\u4ee5\u5b58\u50a8\u591a\u4e2a\u5bf9\u8c61\u3002\u4ee5\u4e0b\u662f\u5b9e\u73b0\u6b64\u76ee\u7684\u7684\u6b65\u9aa4\uff1a \u521b\u5efa\u548c\u521d\u59cb\u5316\u6570\u7ec4\uff1a\u58f0\u660e\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4\uff0c\u4f8b\u5982 Object[][] array = new Object[rows][cols];\uff0c\u5176\u4e2d rows \u548c cols \u5206\u522b\u8868\u793a\u884c\u6570\u548c\u5217\u6570\u3002 \u904d\u5386\u6570\u7ec4\uff1a\u4f7f\u7528\u5d4c\u5957\u5faa\u73af\u904d\u5386\u6570\u7ec4\u7684\u6bcf\u4e2a\u5143\u7d20\uff0c\u4f8b\u5982\uff1a for (int i = 0; i < array.length; i++) { for (int j = 0; j < array[i].length; j++) { \/\/ \u6570\u7ec4\u5143\u7d20\u7684\u5185\u5bb9\u8bbe\u7f6e\u5728\u8fd9\u91cc } } \u767b\u5f55\u540e\u590d\u5236 \u5b58\u50a8\u5bf9\u8c61\uff1a\u5728\u904d\u5386\u6570\u7ec4\u65f6\uff0c\u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26\u5c06\u5bf9\u8c61\u5b58\u50a8\u5728\u5143\u7d20\u4e2d\uff0c\u4f8b\u5982\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b array[i][j] = someObject; \u767b\u5f55\u540e\u590d\u5236 \u8bbf\u95ee\u5bf9\u8c61\uff1a\u4f7f\u7528\u540c\u6837\u7684\u5d4c\u5957\u5faa\u73af\u904d\u5386\u6570\u7ec4\uff0c\u60a8\u53ef\u4ee5\u50cf\u8fd9\u6837\u8bbf\u95ee\u5b58\u50a8\u7684\u5bf9\u8c61\uff1a Object retrievedObject = […]<\/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-39180","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/39180","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=39180"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/39180\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=39180"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=39180"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=39180"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}