{"id":40289,"date":"2024-11-26T09:35:28","date_gmt":"2024-11-26T01:35:28","guid":{"rendered":"https:\/\/fwq.ai\/blog\/40289\/"},"modified":"2024-11-26T09:35:28","modified_gmt":"2024-11-26T01:35:28","slug":"%e5%9c%a8java%e4%b8%ad%e6%80%8e%e4%b9%88%e5%ae%9a%e4%b9%89%e4%b8%80%e4%b8%aa%e6%95%b0%e7%bb%84%e7%9a%84%e9%95%bf%e5%ba%a6","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/40289\/","title":{"rendered":"\u5728java\u4e2d\u600e\u4e48\u5b9a\u4e49\u4e00\u4e2a\u6570\u7ec4\u7684\u957f\u5ea6"},"content":{"rendered":"

\n \u5728 java \u4e2d\u5b9a\u4e49\u6570\u7ec4\u7684\u957f\u5ea6\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528\u65b9\u62ec\u53f7\u8bed\u6cd5\uff0c\u4f8b\u5982\uff1aint[] numbers = new int[5]; \/\/ \u5b9a\u4e49\u957f\u5ea6\u4e3a 5 \u7684 int \u6570\u7ec4\u4f7f\u7528 array.newinstance() \u5de5\u5382\u65b9\u6cd5\uff0c\u4f8b\u5982\uff1aint[][] matrix = (int[][]) array.newinstance(int.class, 2, 3); \/\/ \u5b9a\u4e49\u4e00\u4e2a 2×3 \u7684 int \u6570\u7ec4\n<\/p><\/blockquote>\n

\"\u5728java\u4e2d\u600e\u4e48\u5b9a\u4e49\u4e00\u4e2a\u6570\u7ec4\u7684\u957f\u5ea6\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u5728 Java \u4e2d\u5b9a\u4e49\u6570\u7ec4\u7684\u957f\u5ea6<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\u6765\u5b9a\u4e49\u6570\u7ec4\u7684\u957f\u5ea6\uff1a<\/p>\n

1. \u4f7f\u7528\u65b9\u62ec\u53f7\u8bed\u6cd5<\/strong><\/p>\n

\u8fd9\u662f\u5b9a\u4e49\u6570\u7ec4\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u3002\u6570\u7ec4\u7c7b\u578b\u540e\u52a0\u4e0a\u65b9\u62ec\u53f7\uff0c\u5185\u542b\u7684\u6570\u5b57\u8868\u793a\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u4f8b\u5982\uff1a<\/p>\n

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

int[] numbers = new int[5]; \/\/ \u5b9a\u4e49\u957f\u5ea6\u4e3a 5 \u7684 int \u6570\u7ec4<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
2. \u4f7f\u7528 Array.newInstance() \u5de5\u5382\u65b9\u6cd5<\/strong><\/p>\n
\u6b64\u65b9\u6cd5\u63d0\u4f9b\u4e86\u66f4\u591a\u7684\u7075\u6d3b\u6027\u3002\u5b83\u91c7\u7528\u4e09\u4e2a\u53c2\u6570\uff1a<\/p>\n
    \n
  • \u5143\u7d20\u7c7b\u578b\uff08\u4f8b\u5982 int.class\u3001String.class \u7b49\uff09<\/li>\n
  • \u7ef4\u6570\uff08\u4f8b\u5982 1 \u8868\u793a\u4e00\u7ef4\u6570\u7ec4\uff0c2 \u8868\u793a\u4e8c\u7ef4\u6570\u7ec4\u7b49\uff09<\/li>\n
  • \u6bcf\u4e2a\u7ef4\u5ea6\u7684\u957f\u5ea6<\/li>\n<\/ul>\n
    \u4f8b\u5982\uff1a<\/p>\n
    int[][] matrix = (int[][]) Array.newInstance(int.class, 2, 3); \/\/ \u5b9a\u4e49\u4e00\u4e2a 2x3 \u7684 int \u6570\u7ec4<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u6ce8\u610f\uff1a<\/strong><\/p>\n
      \n
    • \u6570\u7ec4\u4e00\u65e6\u521b\u5efa\uff0c\u5176\u957f\u5ea6\u5c31\u56fa\u5b9a\u4e86\u3002<\/li>\n
    • \u6570\u7ec4\u7d22\u5f15\u662f\u4ece 0 \u5f00\u59cb\u7684\u3002<\/li>\n
    • \u5b9a\u4e49\u6570\u7ec4\u65f6\uff0c\u4e0d\u80fd\u7701\u7565\u5143\u7d20\u7c7b\u578b\u6216\u957f\u5ea6\u3002<\/li>\n<\/ul>\n
      \u4ee5\u4e0a\u5c31\u662f\u5728java\u4e2d\u600e\u4e48\u5b9a\u4e49\u4e00\u4e2a\u6570\u7ec4\u7684\u957f\u5ea6\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\u5b9a\u4e49\u6570\u7ec4\u7684\u957f\u5ea6\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528\u65b9\u62ec\u53f7\u8bed\u6cd5\uff0c\u4f8b\u5982\uff1aint[] numbers = new int[5]; \/\/ \u5b9a\u4e49\u957f\u5ea6\u4e3a 5 \u7684 int \u6570\u7ec4\u4f7f\u7528 array.newinstance() \u5de5\u5382\u65b9\u6cd5\uff0c\u4f8b\u5982\uff1aint[][] matrix = (int[][]) array.newinstance(int.class, 2, 3); \/\/ \u5b9a\u4e49\u4e00\u4e2a 2×3 \u7684 int \u6570\u7ec4 \u5982\u4f55\u5728 Java \u4e2d\u5b9a\u4e49\u6570\u7ec4\u7684\u957f\u5ea6 \u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\u6765\u5b9a\u4e49\u6570\u7ec4\u7684\u957f\u5ea6\uff1a 1. \u4f7f\u7528\u65b9\u62ec\u53f7\u8bed\u6cd5 \u8fd9\u662f\u5b9a\u4e49\u6570\u7ec4\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u3002\u6570\u7ec4\u7c7b\u578b\u540e\u52a0\u4e0a\u65b9\u62ec\u53f7\uff0c\u5185\u542b\u7684\u6570\u5b57\u8868\u793a\u6570\u7ec4\u7684\u957f\u5ea6\u3002\u4f8b\u5982\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] numbers = new int[5]; \/\/ \u5b9a\u4e49\u957f\u5ea6\u4e3a 5 \u7684 int \u6570\u7ec4 \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 Array.newInstance() \u5de5\u5382\u65b9\u6cd5 \u6b64\u65b9\u6cd5\u63d0\u4f9b\u4e86\u66f4\u591a\u7684\u7075\u6d3b\u6027\u3002\u5b83\u91c7\u7528\u4e09\u4e2a\u53c2\u6570\uff1a \u5143\u7d20\u7c7b\u578b\uff08\u4f8b\u5982 […]<\/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-40289","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/40289","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=40289"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/40289\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=40289"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=40289"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=40289"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}