{"id":37495,"date":"2024-11-26T15:53:27","date_gmt":"2024-11-26T07:53:27","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37495\/"},"modified":"2024-11-26T15:53:27","modified_gmt":"2024-11-26T07:53:27","slug":"java%e6%80%8e%e4%b9%88%e6%b7%bb%e5%8a%a0%e7%a9%ba%e6%95%b0%e7%bb%84%e5%85%83%e7%b4%a0","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37495\/","title":{"rendered":"java\u600e\u4e48\u6dfb\u52a0\u7a7a\u6570\u7ec4\u5143\u7d20"},"content":{"rendered":"

\n \u5411 java \u6570\u7ec4\u6dfb\u52a0\u7a7a\u5143\u7d20\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a1. \u8d4b\u503c null\uff0c2. \u4f7f\u7528 arrays.fill() \u65b9\u6cd5\u586b\u5145\u4e3a null\u3002\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u6dfb\u52a0\u7a7a\u6570\u7ec4\u5143\u7d20\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u5411 Java \u6570\u7ec4\u4e2d\u6dfb\u52a0\u7a7a\u5143\u7d20<\/strong><\/p>\n

\u7b80\u4ecb<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u6570\u7ec4\u662f\u4e00\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684\u5bf9\u8c61\u5bb9\u5668\uff0c\u5b83\u4eec\u53ef\u4ee5\u5b58\u50a8\u76f8\u540c\u6570\u636e\u7c7b\u578b\u7684\u5143\u7d20\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u6570\u7ec4\u5143\u7d20\u88ab\u521d\u59cb\u5316\u4e3a\u5176\u9ed8\u8ba4\u503c\uff08\u5982 0\u3001false \u6216 null\uff09\u3002\u7136\u800c\uff0c\u6709\u65f6\u5019\u6211\u4eec\u53ef\u80fd\u9700\u8981\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u7a7a\u5143\u7d20\u3002<\/p>\n

\u5982\u4f55\u6dfb\u52a0\u7a7a\u5143\u7d20<\/strong><\/p>\n

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

\u5411 Java \u6570\u7ec4\u4e2d\u6dfb\u52a0\u7a7a\u5143\u7d20\u7684\u65b9\u6cd5\u6709\u4e24\u79cd\uff1a<\/p>\n

1. \u4f7f\u7528 null<\/strong><\/p>\n

\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 null \u503c\uff0c\u5b83\u8868\u793a\u4e0d\u5b58\u5728\u503c\u3002\u6211\u4eec\u53ef\u4ee5\u5c06 null \u8d4b\u503c\u7ed9\u6570\u7ec4\u5143\u7d20\uff1a<\/p>\n

int[] myArray = new int[10];\nmyArray[5] = null;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
2. \u4f7f\u7528 Arrays.fill() \u65b9\u6cd5<\/strong><\/p>\n
Arrays.fill() \u65b9\u6cd5\u5141\u8bb8\u6211\u4eec\u7528\u6307\u5b9a\u503c\u586b\u5145\u6574\u4e2a\u6570\u7ec4\u6216\u5176\u6307\u5b9a\u90e8\u5206\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 Arrays.fill() \u65b9\u6cd5\u5c06\u6570\u7ec4\u5143\u7d20\u586b\u5145\u4e3a null\uff1a<\/p>\n
int[] myArray = new int[10];\nArrays.fill(myArray, null);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6ce8\u610f\uff1a<\/strong><\/p>\n
    \n
  • \u786e\u4fdd\u6570\u7ec4\u7684\u5927\u5c0f\u8db3\u591f\u5927\u4ee5\u5bb9\u7eb3\u7a7a\u5143\u7d20\u3002<\/li>\n
  • \u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u7a7a\u5143\u7d20\u540e\uff0c\u8be5\u5143\u7d20\u7684\u503c\u5c06\u4e3a null\uff0c\u65e0\u6cd5\u518d\u5b58\u50a8\u5176\u4ed6\u503c\u3002<\/li>\n
  • \u867d\u7136\u7a7a\u5143\u7d20\u5728\u6570\u7ec4\u4e2d\u6709\u6548\uff0c\u4f46\u4f7f\u7528\u5b83\u4eec\u65f6\u5e94\u8c28\u614e\uff0c\u56e0\u4e3a\u5b83\u4eec\u53ef\u80fd\u4f1a\u5bfc\u81f4\u4ee3\u7801\u6df7\u4e71\u3002<\/li>\n<\/ul>\n
    \u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u6dfb\u52a0\u7a7a\u6570\u7ec4\u5143\u7d20\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":"
    \u5411 java \u6570\u7ec4\u6dfb\u52a0\u7a7a\u5143\u7d20\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a1. \u8d4b\u503c null\uff0c2. \u4f7f\u7528 arrays.fill() \u65b9\u6cd5\u586b\u5145\u4e3a null\u3002 \u5982\u4f55\u5411 Java \u6570\u7ec4\u4e2d\u6dfb\u52a0\u7a7a\u5143\u7d20 \u7b80\u4ecb \u5728 Java \u4e2d\uff0c\u6570\u7ec4\u662f\u4e00\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684\u5bf9\u8c61\u5bb9\u5668\uff0c\u5b83\u4eec\u53ef\u4ee5\u5b58\u50a8\u76f8\u540c\u6570\u636e\u7c7b\u578b\u7684\u5143\u7d20\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u6570\u7ec4\u5143\u7d20\u88ab\u521d\u59cb\u5316\u4e3a\u5176\u9ed8\u8ba4\u503c\uff08\u5982 0\u3001false \u6216 null\uff09\u3002\u7136\u800c\uff0c\u6709\u65f6\u5019\u6211\u4eec\u53ef\u80fd\u9700\u8981\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u7a7a\u5143\u7d20\u3002 \u5982\u4f55\u6dfb\u52a0\u7a7a\u5143\u7d20 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u5411 Java \u6570\u7ec4\u4e2d\u6dfb\u52a0\u7a7a\u5143\u7d20\u7684\u65b9\u6cd5\u6709\u4e24\u79cd\uff1a 1. \u4f7f\u7528 null \u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 null \u503c\uff0c\u5b83\u8868\u793a\u4e0d\u5b58\u5728\u503c\u3002\u6211\u4eec\u53ef\u4ee5\u5c06 null \u8d4b\u503c\u7ed9\u6570\u7ec4\u5143\u7d20\uff1a int[] myArray = new int[10]; myArray[5] = null; \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 Arrays.fill() \u65b9\u6cd5 Arrays.fill() \u65b9\u6cd5\u5141\u8bb8\u6211\u4eec\u7528\u6307\u5b9a\u503c\u586b\u5145\u6574\u4e2a\u6570\u7ec4\u6216\u5176\u6307\u5b9a\u90e8\u5206\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 Arrays.fill() \u65b9\u6cd5\u5c06\u6570\u7ec4\u5143\u7d20\u586b\u5145\u4e3a null\uff1a int[] myArray = new int[10]; […]<\/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-37495","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37495","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=37495"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37495\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37495"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37495"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37495"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}