{"id":37683,"date":"2024-11-26T16:38:08","date_gmt":"2024-11-26T08:38:08","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37683\/"},"modified":"2024-11-26T16:38:08","modified_gmt":"2024-11-26T08:38:08","slug":"java%e4%b8%ad%e6%95%b0%e7%bb%84%e5%86%85%e5%ae%b9%e6%80%8e%e4%b9%88%e6%b8%85%e7%a9%ba","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37683\/","title":{"rendered":"java\u4e2d\u6570\u7ec4\u5185\u5bb9\u600e\u4e48\u6e05\u7a7a"},"content":{"rendered":"<blockquote><p>\n  java \u4e2d\u6e05\u7a7a\u6570\u7ec4\u5185\u5bb9\u7684\u65b9\u6cd5\u6709\u4e24\u79cd\uff1a\u91cd\u65b0\u5206\u914d\u6570\u7ec4\uff1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u7a7a\u6570\u7ec4\uff0c\u4e22\u5f03\u65e7\u6570\u7ec4\uff1b\u4f7f\u7528\u586b\u5145\u65b9\u6cd5\uff1a\u4f7f\u7528 arrays.fill(arrayname, value) \u6216 arrays.fill(arrayname, start, end, value) \u586b\u5145\u6570\u7ec4\u5143\u7d20\uff0c\u5e76\u5c06 value \u8bbe\u7f6e\u4e3a null\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111308572262507.jpg\" class=\"aligncenter\" title=\"java\u4e2d\u6570\u7ec4\u5185\u5bb9\u600e\u4e48\u6e05\u7a7a\u63d2\u56fe\" alt=\"java\u4e2d\u6570\u7ec4\u5185\u5bb9\u600e\u4e48\u6e05\u7a7a\u63d2\u56fe\" \/><\/p>\n<p><strong>Java\u4e2d\u6570\u7ec4\u5185\u5bb9\u6e05\u7a7a\u65b9\u6cd5<\/strong><\/p>\n<p>Java\u4e2d\uff0c\u6570\u7ec4\u662f\u4e00\u79cd\u5f15\u7528\u7c7b\u578b\uff0c\u5b83\u5b58\u50a8\u4e00\u7ec4\u76f8\u540c\u7c7b\u578b\u7684\u6570\u636e\u3002\u5f53\u6570\u7ec4\u88ab\u521d\u59cb\u5316\u540e\uff0c\u5b83\u5c31\u4f1a\u5206\u914d\u4e00\u5757\u5185\u5b58\u6765\u5b58\u50a8\u8fd9\u4e9b\u6570\u636e\u3002\u4f46\u662f\uff0c\u968f\u7740\u65f6\u95f4\u7684\u63a8\u79fb\uff0c\u6570\u7ec4\u4e2d\u7684\u6570\u636e\u53ef\u80fd\u4f1a\u88ab\u4fee\u6539\u6216\u4e0d\u518d\u9700\u8981\u3002\u56e0\u6b64\uff0c\u53ef\u80fd\u9700\u8981\u6e05\u7a7a\u6570\u7ec4\u4e2d\u7684\u5185\u5bb9\u4ee5\u91ca\u653e\u5185\u5b58\u6216\u4e3a\u65b0\u6570\u636e\u817e\u51fa\u7a7a\u95f4\u3002<\/p>\n<p><strong>\u6e05\u7a7a\u6570\u7ec4\u5185\u5bb9\u7684\u65b9\u6cd5<\/strong><\/p>\n<p>\u5728Java\u4e2d\uff0c\u6709\u4e24\u79cd\u4e3b\u8981\u7684\u65b9\u6cd5\u53ef\u4ee5\u6e05\u7a7a\u6570\u7ec4\u5185\u5bb9\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p><strong>1. \u91cd\u65b0\u5206\u914d\u6570\u7ec4<\/strong><\/p>\n<p>\u6700\u76f4\u63a5\u7684\u65b9\u6cd5\u662f\u91cd\u65b0\u5206\u914d\u6570\u7ec4\uff0c\u8fd9\u5c06\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u7a7a\u6570\u7ec4\u5e76\u4e22\u5f03\u65e7\u6570\u7ec4\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u91cd\u65b0\u5206\u914d\u6570\u7ec4\uff1a<\/p>\n<pre>arrayName = new Type[size];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5176\u4e2d\uff1a<\/p>\n<ul>\n<li>arrayName \u662f\u8981\u6e05\u7a7a\u7684\u6570\u7ec4\u7684\u540d\u79f0\u3002<\/li>\n<li>Type \u662f\u6570\u7ec4\u5143\u7d20\u7684\u7c7b\u578b\u3002<\/li>\n<li>size \u662f\u65b0\u6570\u7ec4\u7684\u5927\u5c0f\u3002\uff08\u5982\u679c\u5e0c\u671b\u521b\u5efa\u4e00\u4e2a\u7a7a\u6570\u7ec4\uff0c\u5219\u53ef\u4ee5\u5c06\u5176\u8bbe\u7f6e\u4e3a 0\uff09<\/li>\n<\/ul>\n<p><strong>2. \u4f7f\u7528\u586b\u5145\u65b9\u6cd5<\/strong><\/p>\n<p>Java\u63d0\u4f9b\u4e86\u4e24\u4e2a\u5185\u7f6e\u65b9\u6cd5\u6765\u586b\u5145\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff1a<\/p>\n<ul>\n<li>Arrays.fill(arrayName, value)\uff1a\u7528\u6307\u5b9a\u7684\u503c\u586b\u5145\u6574\u4e2a\u6570\u7ec4\u3002<\/li>\n<li>Arrays.fill(arrayName, start, end, value)\uff1a\u4ec5\u7528\u6307\u5b9a\u503c\u586b\u5145\u6570\u7ec4\u6307\u5b9a\u8303\u56f4\u5185\u7684\u5143\u7d20\u3002<\/li>\n<\/ul>\n<p>\u5c06value\u8bbe\u7f6e\u4e3anull\u4ee5\u586b\u5145\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u5e76\u5c06\u5176\u6e05\u7a7a\u3002<\/p>\n<p><strong>\u7528\u6cd5\u793a\u4f8b<\/strong><\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f7f\u7528\u4e0a\u8ff0\u65b9\u6cd5\u6e05\u7a7a\u6570\u7ec4\u5185\u5bb9\u7684\u793a\u4f8b\uff1a<\/p>\n<pre>\/\/ \u91cd\u65b0\u5206\u914d\u6570\u7ec4\nint[] myArray = {1, 2, 3, 4, 5};\nmyArray = new int[0];\n\n\/\/ \u4f7f\u7528 Arrays.fill() \u65b9\u6cd5\nString[] myArray = {\"A\", \"B\", \"C\", \"D\", \"E\"};\nArrays.fill(myArray, null);\n\n\/\/ \u4f7f\u7528 Arrays.fill(start, end, value) \u65b9\u6cd5\nint[] myArray = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};\nArrays.fill(myArray, 3, 7, 0);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6ce8\u610f\uff1a<\/strong><\/p>\n<p>\u6e05\u7a7a\u6570\u7ec4\u540e\uff0c\u539f\u59cb\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u5c06\u88ab\u4e22\u5f03\uff0c\u5f15\u7528\u5c06\u6307\u5411\u4e00\u4e2a\u65b0\u7684\u7a7a\u6570\u7ec4\u3002\u56e0\u6b64\uff0c\u5982\u679c\u9700\u8981\u4fdd\u7559\u539f\u59cb\u6570\u7ec4\u4e2d\u7684\u4efb\u4f55\u5143\u7d20\uff0c\u8bf7\u52a1\u5fc5\u5728\u6e05\u7a7a\u6570\u7ec4\u4e4b\u524d\u5c06\u5176\u590d\u5236\u5230\u5176\u4ed6\u53d8\u91cf\u6216\u6570\u7ec4\u4e2d\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u6570\u7ec4\u5185\u5bb9\u600e\u4e48\u6e05\u7a7a\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":"<p>java \u4e2d\u6e05\u7a7a\u6570\u7ec4\u5185\u5bb9\u7684\u65b9\u6cd5\u6709\u4e24\u79cd\uff1a\u91cd\u65b0\u5206\u914d\u6570\u7ec4\uff1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u7a7a\u6570\u7ec4\uff0c\u4e22\u5f03\u65e7\u6570\u7ec4\uff1b\u4f7f\u7528\u586b\u5145\u65b9\u6cd5\uff1a\u4f7f\u7528 arrays.fill(arrayname, value) \u6216 arrays.fill(arrayname, start, end, value) \u586b\u5145\u6570\u7ec4\u5143\u7d20\uff0c\u5e76\u5c06 value \u8bbe\u7f6e\u4e3a null\u3002 Java\u4e2d\u6570\u7ec4\u5185\u5bb9\u6e05\u7a7a\u65b9\u6cd5 Java\u4e2d\uff0c\u6570\u7ec4\u662f\u4e00\u79cd\u5f15\u7528\u7c7b\u578b\uff0c\u5b83\u5b58\u50a8\u4e00\u7ec4\u76f8\u540c\u7c7b\u578b\u7684\u6570\u636e\u3002\u5f53\u6570\u7ec4\u88ab\u521d\u59cb\u5316\u540e\uff0c\u5b83\u5c31\u4f1a\u5206\u914d\u4e00\u5757\u5185\u5b58\u6765\u5b58\u50a8\u8fd9\u4e9b\u6570\u636e\u3002\u4f46\u662f\uff0c\u968f\u7740\u65f6\u95f4\u7684\u63a8\u79fb\uff0c\u6570\u7ec4\u4e2d\u7684\u6570\u636e\u53ef\u80fd\u4f1a\u88ab\u4fee\u6539\u6216\u4e0d\u518d\u9700\u8981\u3002\u56e0\u6b64\uff0c\u53ef\u80fd\u9700\u8981\u6e05\u7a7a\u6570\u7ec4\u4e2d\u7684\u5185\u5bb9\u4ee5\u91ca\u653e\u5185\u5b58\u6216\u4e3a\u65b0\u6570\u636e\u817e\u51fa\u7a7a\u95f4\u3002 \u6e05\u7a7a\u6570\u7ec4\u5185\u5bb9\u7684\u65b9\u6cd5 \u5728Java\u4e2d\uff0c\u6709\u4e24\u79cd\u4e3b\u8981\u7684\u65b9\u6cd5\u53ef\u4ee5\u6e05\u7a7a\u6570\u7ec4\u5185\u5bb9\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b 1. \u91cd\u65b0\u5206\u914d\u6570\u7ec4 \u6700\u76f4\u63a5\u7684\u65b9\u6cd5\u662f\u91cd\u65b0\u5206\u914d\u6570\u7ec4\uff0c\u8fd9\u5c06\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u7a7a\u6570\u7ec4\u5e76\u4e22\u5f03\u65e7\u6570\u7ec4\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u91cd\u65b0\u5206\u914d\u6570\u7ec4\uff1a arrayName = new Type[size]; \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff1a arrayName \u662f\u8981\u6e05\u7a7a\u7684\u6570\u7ec4\u7684\u540d\u79f0\u3002 Type \u662f\u6570\u7ec4\u5143\u7d20\u7684\u7c7b\u578b\u3002 size \u662f\u65b0\u6570\u7ec4\u7684\u5927\u5c0f\u3002\uff08\u5982\u679c\u5e0c\u671b\u521b\u5efa\u4e00\u4e2a\u7a7a\u6570\u7ec4\uff0c\u5219\u53ef\u4ee5\u5c06\u5176\u8bbe\u7f6e\u4e3a 0\uff09 2. \u4f7f\u7528\u586b\u5145\u65b9\u6cd5 Java\u63d0\u4f9b\u4e86\u4e24\u4e2a\u5185\u7f6e\u65b9\u6cd5\u6765\u586b\u5145\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\uff1a Arrays.fill(arrayName, value)\uff1a\u7528\u6307\u5b9a\u7684\u503c\u586b\u5145\u6574\u4e2a\u6570\u7ec4\u3002 Arrays.fill(arrayName, start, end, value)\uff1a\u4ec5\u7528\u6307\u5b9a\u503c\u586b\u5145\u6570\u7ec4\u6307\u5b9a\u8303\u56f4\u5185\u7684\u5143\u7d20\u3002 \u5c06value\u8bbe\u7f6e\u4e3anull\u4ee5\u586b\u5145\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u5e76\u5c06\u5176\u6e05\u7a7a\u3002 \u7528\u6cd5\u793a\u4f8b \u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f7f\u7528\u4e0a\u8ff0\u65b9\u6cd5\u6e05\u7a7a\u6570\u7ec4\u5185\u5bb9\u7684\u793a\u4f8b\uff1a \/\/ \u91cd\u65b0\u5206\u914d\u6570\u7ec4 int[] myArray = {1, 2, 3, 4, [&hellip;]<\/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-37683","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37683","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=37683"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37683\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37683"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37683"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37683"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}