{"id":65862,"date":"2025-05-03T13:43:11","date_gmt":"2025-05-03T05:43:11","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65862\/"},"modified":"2025-05-03T13:43:11","modified_gmt":"2025-05-03T05:43:11","slug":"java%e5%a4%9a%e7%bb%b4%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e6%b7%bb%e5%8a%a0%e5%85%83%e7%b4%a0-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65862\/","title":{"rendered":"java\u591a\u7ef4\u6570\u7ec4\u600e\u4e48\u6dfb\u52a0\u5143\u7d20"},"content":{"rendered":"<blockquote><p>\n  \u5728 java \u4e2d\uff0c\u5411\u591a\u7ef4\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20\u7684\u65b9\u6cd5\u4e3a\uff1a\u6307\u5b9a\u6bcf\u4e2a\u7ef4\u5ea6\u7684\u7d22\u5f15\u3002\u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26 = \u5c06\u503c\u5206\u914d\u7ed9\u7279\u5b9a\u5355\u5143\u683c\u6216\u5143\u7d20\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111313152552094.jpg\" class=\"aligncenter\" title=\"java\u591a\u7ef4\u6570\u7ec4\u600e\u4e48\u6dfb\u52a0\u5143\u7d20\u63d2\u56fe\" alt=\"java\u591a\u7ef4\u6570\u7ec4\u600e\u4e48\u6dfb\u52a0\u5143\u7d20\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u4e2d\u5411\u591a\u7ef4\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u591a\u7ef4\u6570\u7ec4\u662f\u4e00\u79cd\u6570\u7ec4\uff0c\u5b83\u5305\u542b\u591a\u4e2a\u7ef4\u5ea6\u3002\u5411\u591a\u7ef4\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20\u9700\u8981\u6839\u636e\u6240\u6d89\u53ca\u7684\u7ef4\u5ea6\u8fdb\u884c\u8003\u8651\u3002<\/p>\n<p><strong>\u6dfb\u52a0\u5143\u7d20\u5230\u4e8c\u7ef4\u6570\u7ec4<\/strong><\/p>\n<p>\u5bf9\u4e8e\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4\uff0c\u4f8b\u5982 int[][] arr = new int[3][4];\uff0c\u4ee5\u4e0b\u662f\u5982\u4f55\u5411\u5176\u6dfb\u52a0\u5143\u7d20\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<ol>\n<li> <strong>\u6307\u5b9a\u884c\u548c\u5217\u7d22\u5f15\uff1a<\/strong>\u4f7f\u7528 arr[rowIndex][columnIndex] \u8bbf\u95ee\u7279\u5b9a\u5355\u5143\u683c\u3002<\/li>\n<li> <strong>\u5c06\u503c\u5206\u914d\u7ed9\u5355\u5143\u683c\uff1a<\/strong>\u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26 = \u5c06\u4e00\u4e2a\u503c\u5206\u914d\u7ed9\u5355\u5143\u683c\uff0c\u4f8b\u5982 arr[1][2] = 10;\u3002<\/li>\n<\/ol>\n<p><strong>\u6dfb\u52a0\u5143\u7d20\u5230\u66f4\u9ad8\u7ef4\u6570\u7ec4<\/strong><\/p>\n<p>\u5bf9\u4e8e\u4e09\u7ef4\u6570\u7ec4\u6216\u66f4\u9ad8\u7ef4\u6570\u7ec4\uff0c\u6dfb\u52a0\u5143\u7d20\u7684\u8fc7\u7a0b\u7c7b\u4f3c\uff0c\u4f46\u9700\u8981\u6307\u5b9a\u66f4\u591a\u7ef4\u5ea6\uff1a<\/p>\n<ol>\n<li> <strong>\u6307\u5b9a\u6240\u6709\u7ef4\u5ea6\u7d22\u5f15\uff1a<\/strong>\u4f7f\u7528 arr[dim1Index][dim2Index][dim3Index]&#8230; \u8bbf\u95ee\u7279\u5b9a\u5143\u7d20\u3002<\/li>\n<li> <strong>\u5c06\u503c\u5206\u914d\u7ed9\u5143\u7d20\uff1a<\/strong>\u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26 = \u5c06\u503c\u5206\u914d\u7ed9\u5143\u7d20\uff0c\u4f8b\u5982 arr[2][1][3] = 20;\u3002<\/li>\n<\/ol>\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<ul>\n<li>\u786e\u4fdd\u6570\u7ec4\u5df2\u7ecf\u521d\u59cb\u5316\uff0c\u5426\u5219\u4f1a\u629b\u51fa NullPointerException\u3002<\/li>\n<li>\u8fb9\u754c\u68c0\u67e5\u5f88\u91cd\u8981\uff0c\u4ee5\u907f\u514d\u6570\u7ec4\u8d8a\u754c\u5f02\u5e38\u3002<\/li>\n<li>\u4f7f\u7528 for \u5faa\u73af\u6216\u5d4c\u5957 for \u5faa\u73af\u53ef\u4ee5\u6709\u6548\u5730\u904d\u5386\u591a\u7ef4\u6570\u7ec4\u5e76\u6dfb\u52a0\u5143\u7d20\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u591a\u7ef4\u6570\u7ec4\u600e\u4e48\u6dfb\u52a0\u5143\u7d20\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 java \u4e2d\uff0c\u5411\u591a\u7ef4\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20\u7684\u65b9\u6cd5\u4e3a\uff1a\u6307\u5b9a\u6bcf\u4e2a\u7ef4\u5ea6\u7684\u7d22\u5f15\u3002\u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26 = \u5c06\u503c\u5206\u914d\u7ed9\u7279\u5b9a\u5355\u5143\u683c\u6216\u5143\u7d20\u3002 Java \u4e2d\u5411\u591a\u7ef4\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20 \u5728 Java \u4e2d\uff0c\u591a\u7ef4\u6570\u7ec4\u662f\u4e00\u79cd\u6570\u7ec4\uff0c\u5b83\u5305\u542b\u591a\u4e2a\u7ef4\u5ea6\u3002\u5411\u591a\u7ef4\u6570\u7ec4\u6dfb\u52a0\u5143\u7d20\u9700\u8981\u6839\u636e\u6240\u6d89\u53ca\u7684\u7ef4\u5ea6\u8fdb\u884c\u8003\u8651\u3002 \u6dfb\u52a0\u5143\u7d20\u5230\u4e8c\u7ef4\u6570\u7ec4 \u5bf9\u4e8e\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4\uff0c\u4f8b\u5982 int[][] arr = new int[3][4];\uff0c\u4ee5\u4e0b\u662f\u5982\u4f55\u5411\u5176\u6dfb\u52a0\u5143\u7d20\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u6307\u5b9a\u884c\u548c\u5217\u7d22\u5f15\uff1a\u4f7f\u7528 arr[rowIndex][columnIndex] \u8bbf\u95ee\u7279\u5b9a\u5355\u5143\u683c\u3002 \u5c06\u503c\u5206\u914d\u7ed9\u5355\u5143\u683c\uff1a\u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26 = \u5c06\u4e00\u4e2a\u503c\u5206\u914d\u7ed9\u5355\u5143\u683c\uff0c\u4f8b\u5982 arr[1][2] = 10;\u3002 \u6dfb\u52a0\u5143\u7d20\u5230\u66f4\u9ad8\u7ef4\u6570\u7ec4 \u5bf9\u4e8e\u4e09\u7ef4\u6570\u7ec4\u6216\u66f4\u9ad8\u7ef4\u6570\u7ec4\uff0c\u6dfb\u52a0\u5143\u7d20\u7684\u8fc7\u7a0b\u7c7b\u4f3c\uff0c\u4f46\u9700\u8981\u6307\u5b9a\u66f4\u591a\u7ef4\u5ea6\uff1a \u6307\u5b9a\u6240\u6709\u7ef4\u5ea6\u7d22\u5f15\uff1a\u4f7f\u7528 arr[dim1Index][dim2Index][dim3Index]&#8230; \u8bbf\u95ee\u7279\u5b9a\u5143\u7d20\u3002 \u5c06\u503c\u5206\u914d\u7ed9\u5143\u7d20\uff1a\u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26 = \u5c06\u503c\u5206\u914d\u7ed9\u5143\u7d20\uff0c\u4f8b\u5982 arr[2][1][3] = 20;\u3002 \u6ce8\u610f\uff1a \u786e\u4fdd\u6570\u7ec4\u5df2\u7ecf\u521d\u59cb\u5316\uff0c\u5426\u5219\u4f1a\u629b\u51fa NullPointerException\u3002 \u8fb9\u754c\u68c0\u67e5\u5f88\u91cd\u8981\uff0c\u4ee5\u907f\u514d\u6570\u7ec4\u8d8a\u754c\u5f02\u5e38\u3002 \u4f7f\u7528 for \u5faa\u73af\u6216\u5d4c\u5957 for \u5faa\u73af\u53ef\u4ee5\u6709\u6548\u5730\u904d\u5386\u591a\u7ef4\u6570\u7ec4\u5e76\u6dfb\u52a0\u5143\u7d20\u3002 \u4ee5\u4e0a\u5c31\u662fjava\u591a\u7ef4\u6570\u7ec4\u600e\u4e48\u6dfb\u52a0\u5143\u7d20\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\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-65862","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65862","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=65862"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65862\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65862"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65862"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65862"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}