{"id":36941,"date":"2024-11-26T16:16:35","date_gmt":"2024-11-26T08:16:35","guid":{"rendered":"https:\/\/fwq.ai\/blog\/36941\/"},"modified":"2024-11-26T16:16:35","modified_gmt":"2024-11-26T08:16:35","slug":"java%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e8%bd%aclist","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/36941\/","title":{"rendered":"java\u6570\u7ec4\u600e\u4e48\u8f6clist"},"content":{"rendered":"

\n \u6709\u56db\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5c06 java \u6570\u7ec4\u8f6c\u6362\u4e3a list\uff1acollections.addall()\uff1a\u6027\u80fd\u9ad8\uff0c\u4f46\u521b\u5efa\u4e0d\u53ef\u4fee\u6539\u5217\u8868\u3002arrays.aslist()\uff1a\u65b9\u4fbf\uff0c\u4f46\u521b\u5efa\u4e0d\u53ef\u4fee\u6539\u5217\u8868\u3002stream api\uff1a\u4f7f\u7528 java 8 \u7684 stream api \u521b\u5efa\u53ef\u4fee\u6539\u5217\u8868\u3002\u81ea\u5b9a\u4e49\u5faa\u73af\uff1a\u521b\u5efa\u53ef\u4fee\u6539\u5217\u8868\uff0c\u4f46\u9700\u8981\u624b\u52a8\u6dfb\u52a0\u5143\u7d20\u3002\n<\/p><\/blockquote>\n

\"java\u6570\u7ec4\u600e\u4e48\u8f6clist\u63d2\u56fe\"<\/p>\n

Java \u6570\u7ec4\u8f6c List<\/strong><\/p>\n

\u65b9\u6cd5\u4e00\uff1a\u4f7f\u7528 Collections.addAll()<\/strong><\/p>\n

\u6b64\u65b9\u6cd5\u4f7f\u7528 Collections.addAll() \u65b9\u6cd5\u5c06\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u6dfb\u52a0\u8fdb\u4e00\u4e2a\u65b0\u7684 List \u4e2d\u3002<\/p>\n

int[] numbers = {1, 2, 3, 4, 5};\nList<Integer> list = new ArrayList<>();\nCollections.addAll(list, numbers);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u65b9\u6cd5\u4e8c\uff1a\u4f7f\u7528 Arrays.asList()<\/strong><\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
\u6b64\u65b9\u6cd5\u4f7f\u7528 Arrays.asList() \u65b9\u6cd5\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u4e00\u4e2a List\u3002\u4f46\u662f\uff0c\u8fd4\u56de\u7684 List \u662f\u4e00\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684 List\uff0c\u65e0\u6cd5\u8fdb\u884c\u4fee\u6539\u3002<\/p>\n
int[] numbers = {1, 2, 3, 4, 5};\nList<Integer> list = Arrays.asList(numbers);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u65b9\u6cd5\u4e09\uff1a\u4f7f\u7528 Stream API<\/strong><\/p>\n
\u6b64\u65b9\u6cd5\u4f7f\u7528 Java 8 \u7684 Stream API \u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u4e00\u4e2a List\u3002<\/p>\n
int[] numbers = {1, 2, 3, 4, 5};\nList<Integer> list = Arrays.stream(numbers).boxed().toList();<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u65b9\u6cd5\u56db\uff1a\u4f7f\u7528\u81ea\u5b9a\u4e49\u5faa\u73af<\/strong><\/p>\n
\u5982\u679c\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u53ef\u4fee\u6539\u7684 List\uff0c\u53ef\u4ee5\u4f7f\u7528\u81ea\u5b9a\u4e49\u5faa\u73af\u5c06\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u624b\u52a8\u6dfb\u52a0\u5230 List \u4e2d\u3002<\/p>\n
int[] numbers = {1, 2, 3, 4, 5};\nList<Integer> list = new ArrayList<>();\nfor (int number : numbers) {\n    list.add(number);\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u9009\u62e9\u65b9\u6cd5<\/strong><\/p>\n
\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u4ee5\u4e0b\u56e0\u7d20\uff1a<\/p>\n
    \n
  •  \u6027\u80fd\uff1a<\/strong> Collections.addAll() \u65b9\u6cd5\u901a\u5e38\u6bd4\u5176\u4ed6\u65b9\u6cd5\u6027\u80fd\u66f4\u9ad8\u3002<\/li>\n
  •  \u53ef\u4fee\u6539\u6027\uff1a<\/strong> \u53ea\u6709 \u65b9\u6cd5\u56db \u521b\u5efa\u7684 List \u662f\u53ef\u4fee\u6539\u7684\u3002<\/li>\n
  •  \u65b9\u4fbf\u6027\uff1a<\/strong> Arrays.asList() \u65b9\u6cd5\u662f\u6700\u65b9\u4fbf\u7684\u65b9\u6cd5\uff0c\u4f46\u8fd4\u56de\u7684 List \u662f\u4e0d\u53ef\u4fee\u6539\u7684\u3002<\/li>\n<\/ul>\n
    \u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n
      \n
    • \u65b9\u6cd5\u4e8c \u548c \u65b9\u6cd5\u4e09 \u8fd4\u56de\u7684 List \u5927\u5c0f\u662f\u56fa\u5b9a\u7684\uff0c\u65e0\u6cd5\u5bf9\u5176\u6dfb\u52a0\u6216\u5220\u9664\u5143\u7d20\u3002<\/li>\n
    • \u65b9\u6cd5\u56db \u521b\u5efa\u7684 List \u662f\u53ef\u4fee\u6539\u7684\uff0c\u4f46\u53ef\u80fd\u4f1a\u5bfc\u81f4\u539f\u59cb\u6570\u7ec4\u548c List \u4e4b\u95f4\u51fa\u73b0\u95ee\u9898\u3002<\/li>\n<\/ul>\n
      \u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u600e\u4e48\u8f6clist\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":"
      \u6709\u56db\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5c06 java \u6570\u7ec4\u8f6c\u6362\u4e3a list\uff1acollections.addall()\uff1a\u6027\u80fd\u9ad8\uff0c\u4f46\u521b\u5efa\u4e0d\u53ef\u4fee\u6539\u5217\u8868\u3002arrays.aslist()\uff1a\u65b9\u4fbf\uff0c\u4f46\u521b\u5efa\u4e0d\u53ef\u4fee\u6539\u5217\u8868\u3002stream api\uff1a\u4f7f\u7528 java 8 \u7684 stream api \u521b\u5efa\u53ef\u4fee\u6539\u5217\u8868\u3002\u81ea\u5b9a\u4e49\u5faa\u73af\uff1a\u521b\u5efa\u53ef\u4fee\u6539\u5217\u8868\uff0c\u4f46\u9700\u8981\u624b\u52a8\u6dfb\u52a0\u5143\u7d20\u3002 Java \u6570\u7ec4\u8f6c List \u65b9\u6cd5\u4e00\uff1a\u4f7f\u7528 Collections.addAll() \u6b64\u65b9\u6cd5\u4f7f\u7528 Collections.addAll() \u65b9\u6cd5\u5c06\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u6dfb\u52a0\u8fdb\u4e00\u4e2a\u65b0\u7684 List \u4e2d\u3002 int[] numbers = {1, 2, 3, 4, 5}; List<Integer> list = new ArrayList<>(); Collections.addAll(list, numbers); \u767b\u5f55\u540e\u590d\u5236 \u65b9\u6cd5\u4e8c\uff1a\u4f7f\u7528 Arrays.asList() \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u6b64\u65b9\u6cd5\u4f7f\u7528 Arrays.asList() \u65b9\u6cd5\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u4e00\u4e2a List\u3002\u4f46\u662f\uff0c\u8fd4\u56de\u7684 List \u662f\u4e00\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684 List\uff0c\u65e0\u6cd5\u8fdb\u884c\u4fee\u6539\u3002 int[] numbers = {1, 2, 3, 4, 5}; […]<\/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-36941","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36941","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=36941"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36941\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=36941"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=36941"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=36941"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}