{"id":64379,"date":"2025-05-03T12:12:29","date_gmt":"2025-05-03T04:12:29","guid":{"rendered":"https:\/\/fwq.ai\/blog\/64379\/"},"modified":"2025-05-03T12:12:29","modified_gmt":"2025-05-03T04:12:29","slug":"java%e4%b8%ad%e6%80%8e%e4%b9%88%e6%8a%8a%e5%85%83%e7%b4%a0%e6%b7%bb%e5%8a%a0%e5%88%b0%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/64379\/","title":{"rendered":"java\u4e2d\u600e\u4e48\u628a\u5143\u7d20\u6dfb\u52a0\u5230\u6570\u7ec4"},"content":{"rendered":"

\n \u5728 java \u4e2d\uff0c\u6709\u4ee5\u4e0b\u56db\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5c06\u5143\u7d20\u6dfb\u52a0\u5230\u6570\u7ec4\uff1a\u6570\u7ec4\u521d\u59cb\u5316\u8bed\u6cd5system.arraycopy() \u65b9\u6cd5arrays.copyof() \u65b9\u6cd5java 8 \u7684 stream api\n<\/p><\/blockquote>\n

\"java\u4e2d\u600e\u4e48\u628a\u5143\u7d20\u6dfb\u52a0\u5230\u6570\u7ec4\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u5728 Java \u4e2d\u5c06\u5143\u7d20\u6dfb\u52a0\u5230\u6570\u7ec4<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u5c06\u5143\u7d20\u6dfb\u52a0\u5230\u6570\u7ec4\uff1a<\/p>\n

\u4f7f\u7528\u6570\u7ec4\u521d\u59cb\u5316\u8bed\u6cd5<\/strong><\/p>\n

int[] numbers = {1, 2, 3, 4, 5};<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5<\/strong><\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
int[] originalArray = {1, 2, 3};\nint[] newArray = new int[originalArray.length + 1];\n\nSystem.arraycopy(originalArray, 0, newArray, 0, originalArray.length);\nnewArray[originalArray.length] = 4;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\uff08Java 6 \u6216\u66f4\u9ad8\u7248\u672c\uff09<\/strong><\/p>\n
int[] originalArray = {1, 2, 3};\nint[] newArray = Arrays.copyOf(originalArray, originalArray.length + 1);\nnewArray[originalArray.length] = 4;<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f7f\u7528 Java 8 \u7684 Stream API<\/strong><\/p>\n
int[] originalArray = {1, 2, 3};\nint[] newArray = IntStream.concat(Arrays.stream(originalArray), IntStream.of(4)).toArray();<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><\/p>\n
    \n
  • \u539f\u59cb\u6570\u7ec4\u7684\u7c7b\u578b\u5fc5\u987b\u4e0e\u65b0\u5143\u7d20\u7684\u7c7b\u578b\u76f8\u540c\u3002<\/strong><\/li>\n
  • \u6570\u7ec4\u53ea\u80fd\u5b58\u50a8\u57fa\u672c\u7c7b\u578b\u6216\u5bf9\u8c61\u5f15\u7528\uff0c\u800c\u4e0d\u80fd\u5b58\u50a8\u5bf9\u8c61\u672c\u8eab\u3002<\/strong><\/li>\n
  • \u5982\u679c\u60a8\u9700\u8981\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u591a\u4e2a\u5143\u7d20\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u96c6\u5408\u7c7b\uff0c\u4f8b\u5982 ArrayList \u6216 LinkedList\u3002<\/strong><\/li>\n<\/ul>\n
    \u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u600e\u4e48\u628a\u5143\u7d20\u6dfb\u52a0\u5230\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":"
    \u5728 java \u4e2d\uff0c\u6709\u4ee5\u4e0b\u56db\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5c06\u5143\u7d20\u6dfb\u52a0\u5230\u6570\u7ec4\uff1a\u6570\u7ec4\u521d\u59cb\u5316\u8bed\u6cd5system.arraycopy() \u65b9\u6cd5arrays.copyof() \u65b9\u6cd5java 8 \u7684 stream api \u5982\u4f55\u5728 Java \u4e2d\u5c06\u5143\u7d20\u6dfb\u52a0\u5230\u6570\u7ec4 \u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u5c06\u5143\u7d20\u6dfb\u52a0\u5230\u6570\u7ec4\uff1a \u4f7f\u7528\u6570\u7ec4\u521d\u59cb\u5316\u8bed\u6cd5 int[] numbers = {1, 2, 3, 4, 5}; \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] originalArray = {1, 2, 3}; int[] newArray = new int[originalArray.length + 1]; System.arraycopy(originalArray, 0, newArray, 0, originalArray.length); newArray[originalArray.length] = 4; \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\uff08Java 6 […]<\/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-64379","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64379","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=64379"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64379\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=64379"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=64379"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=64379"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}