{"id":65801,"date":"2025-05-03T11:41:16","date_gmt":"2025-05-03T03:41:16","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65801\/"},"modified":"2025-05-03T11:41:16","modified_gmt":"2025-05-03T03:41:16","slug":"java8%e6%80%8e%e4%b9%88%e5%ae%9a%e4%b9%89%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65801\/","title":{"rendered":"Java8\u600e\u4e48\u5b9a\u4e49\u6570\u7ec4"},"content":{"rendered":"

\n \u5982\u4f55\u5728 java 8 \u4e2d\u5b9a\u4e49\u6570\u7ec4\uff1f\u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4\uff1aarray = new int[]{1, 2, 3};\u4f7f\u7528 arrays.copyof() \u9759\u6001\u65b9\u6cd5\uff1aarray = arrays.copyof(array, n);\n<\/p><\/blockquote>\n

\"Java8\u600e\u4e48\u5b9a\u4e49\u6570\u7ec4\u63d2\u56fe\"<\/p>\n

Java8\u4e2d\u5b9a\u4e49\u6570\u7ec4\u7684\u65b9\u6cd5<\/strong><\/p>\n

\u5728Java 8\u4e2d\uff0c\u6709\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\u53ef\u4ee5\u5b9a\u4e49\u6570\u7ec4\uff1a<\/p>\n

1. \u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4<\/strong><\/p>\n

int[] numbers = new int[]{1, 2, 3, 4, 5};\nString[] names = new String[]{\"John\", \"Mary\", \"Bob\"};<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5728\u8fd9\u79cd\u65b9\u6cd5\u4e2d\uff0c\u6570\u7ec4\u7684\u7c7b\u578b\u548c\u957f\u5ea6\u5728\u58f0\u660e\u65f6\u6307\u5b9a\uff0c\u6570\u7ec4\u5143\u7d20\u5728\u521d\u59cb\u5316\u65f6\u6307\u5b9a\u3002<\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
2. \u4f7f\u7528Arrays.copyOf()\u9759\u6001\u65b9\u6cd5<\/strong><\/p>\n
int[] numbers = Arrays.copyOf(new int[]{1, 2, 3, 4, 5}, 10);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6b64\u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u4e0e\u7ed9\u5b9a\u6570\u7ec4\u5177\u6709\u76f8\u540c\u5185\u5bb9\u7684\u65b0\u6570\u7ec4\u3002\u7b2c\u4e8c\u4e2a\u53c2\u6570\u6307\u5b9a\u6570\u7ec4\u7684\u5927\u5c0f\u3002\u5982\u679c\u65b0\u6570\u7ec4\u5927\u4e8e\u7ed9\u5b9a\u6570\u7ec4\uff0c\u5219\u5269\u4f59\u5143\u7d20\u5c06\u521d\u59cb\u5316\u4e3a\u96f6\u6216\u7a7a\u503c\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u6570\u7ec4\u7c7b\u578b\u3002<\/p>\n
\u5176\u4ed6\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><\/p>\n
    \n
  • \u6570\u7ec4\u7684\u7c7b\u578b\u53ef\u4ee5\u662f\u4efb\u4f55\u57fa\u672c\u7c7b\u578b\u6216\u5f15\u7528\u7c7b\u578b\u3002<\/li>\n
  • \u6570\u7ec4\u5143\u7d20\u53ef\u4ee5\u662f\u5e38\u91cf\u3001\u53d8\u91cf\u6216\u8868\u8fbe\u5f0f\u3002<\/li>\n
  • \u6570\u7ec4\u5927\u5c0f\u5728\u58f0\u660e\u65f6\u56fa\u5b9a\uff0c\u4e0d\u80fd\u5728\u8fd0\u884c\u65f6\u66f4\u6539\u3002<\/li>\n
  • \u6570\u7ec4\u53ef\u4ee5\u4f7f\u7528\u7d22\u5f15\u8bbf\u95ee\u5143\u7d20\uff0c\u7d22\u5f15\u4ece 0 \u5f00\u59cb\u3002<\/li>\n
  • \u6570\u7ec4\u662f\u5f15\u7528\u7c7b\u578b\uff0c\u56e0\u6b64\u53ef\u4ee5\u901a\u8fc7\u5f15\u7528\u53d8\u91cf\u8bbf\u95ee\u5b83\u4eec\u3002<\/li>\n<\/ul>\n
    \u4ee5\u4e0a\u5c31\u662fJava8\u600e\u4e48\u5b9a\u4e49\u6570\u7ec4\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5982\u4f55\u5728 java 8 \u4e2d\u5b9a\u4e49\u6570\u7ec4\uff1f\u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4\uff1aarray = new int[]{1, 2, 3};\u4f7f\u7528 arrays.copyof() \u9759\u6001\u65b9\u6cd5\uff1aarray = arrays.copyof(array, n); Java8\u4e2d\u5b9a\u4e49\u6570\u7ec4\u7684\u65b9\u6cd5 \u5728Java 8\u4e2d\uff0c\u6709\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\u53ef\u4ee5\u5b9a\u4e49\u6570\u7ec4\uff1a 1. \u58f0\u660e\u5e76\u521d\u59cb\u5316\u6570\u7ec4 int[] numbers = new int[]{1, 2, 3, 4, 5}; String[] names = new String[]{“John”, “Mary”, “Bob”}; \u767b\u5f55\u540e\u590d\u5236 \u5728\u8fd9\u79cd\u65b9\u6cd5\u4e2d\uff0c\u6570\u7ec4\u7684\u7c7b\u578b\u548c\u957f\u5ea6\u5728\u58f0\u660e\u65f6\u6307\u5b9a\uff0c\u6570\u7ec4\u5143\u7d20\u5728\u521d\u59cb\u5316\u65f6\u6307\u5b9a\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b 2. \u4f7f\u7528Arrays.copyOf()\u9759\u6001\u65b9\u6cd5 int[] numbers = Arrays.copyOf(new int[]{1, 2, 3, 4, 5}, 10); \u767b\u5f55\u540e\u590d\u5236 \u6b64\u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u4e0e\u7ed9\u5b9a\u6570\u7ec4\u5177\u6709\u76f8\u540c\u5185\u5bb9\u7684\u65b0\u6570\u7ec4\u3002\u7b2c\u4e8c\u4e2a\u53c2\u6570\u6307\u5b9a\u6570\u7ec4\u7684\u5927\u5c0f\u3002\u5982\u679c\u65b0\u6570\u7ec4\u5927\u4e8e\u7ed9\u5b9a\u6570\u7ec4\uff0c\u5219\u5269\u4f59\u5143\u7d20\u5c06\u521d\u59cb\u5316\u4e3a\u96f6\u6216\u7a7a\u503c\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u6570\u7ec4\u7c7b\u578b\u3002 \u5176\u4ed6\u6ce8\u610f\u4e8b\u9879\uff1a \u6570\u7ec4\u7684\u7c7b\u578b\u53ef\u4ee5\u662f\u4efb\u4f55\u57fa\u672c\u7c7b\u578b\u6216\u5f15\u7528\u7c7b\u578b\u3002 \u6570\u7ec4\u5143\u7d20\u53ef\u4ee5\u662f\u5e38\u91cf\u3001\u53d8\u91cf\u6216\u8868\u8fbe\u5f0f\u3002 […]<\/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-65801","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65801","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=65801"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65801\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65801"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65801"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65801"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}