{"id":37806,"date":"2024-11-26T08:47:50","date_gmt":"2024-11-26T00:47:50","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37806\/"},"modified":"2024-11-26T08:47:50","modified_gmt":"2024-11-26T00:47:50","slug":"java%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e8%bd%ac%e5%8c%96%e4%b8%ba%e9%9b%86%e5%90%88","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37806\/","title":{"rendered":"java\u6570\u7ec4\u600e\u4e48\u8f6c\u5316\u4e3a\u96c6\u5408"},"content":{"rendered":"<blockquote><p>\n  java \u6570\u7ec4\u53ef\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u8f6c\u6362\u4e3a\u96c6\u5408\uff1aarrays.aslist()\uff1a\u8fd4\u56de\u4e00\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684\u4e0d\u53ef\u53d8\u5217\u8868\u3002new arraylist(arrays.aslist())\uff1a\u8fd4\u56de\u4e00\u4e2a\u53ef\u53d8\u7684\u5f3a\u7c7b\u578b\u5217\u8868\u3002stream.of()\uff1a\u521b\u5efa\u4e00\u4e2a\u5143\u7d20\u96c6\uff0c\u4e0e collect(collectors.tolist()) \u4e00\u8d77\u4f7f\u7528\u521b\u5efa\u96c6\u5408\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111311001926872.jpg\" class=\"aligncenter\" title=\"java\u6570\u7ec4\u600e\u4e48\u8f6c\u5316\u4e3a\u96c6\u5408\u63d2\u56fe\" alt=\"java\u6570\u7ec4\u600e\u4e48\u8f6c\u5316\u4e3a\u96c6\u5408\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u6570\u7ec4\u8f6c\u6362\u4e3a\u96c6\u5408<\/strong><\/p>\n<p><strong>\u7b80\u4ecb<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u96c6\u5408\u3002\u96c6\u5408\u63d0\u4f9b\u4e86\u6bd4\u6570\u7ec4\u66f4\u7075\u6d3b\u548c\u901a\u7528\u7684\u65b9\u6cd5\u6765\u7ba1\u7406\u6570\u636e\u3002<\/p>\n<p><strong>\u65b9\u6cd5 1\uff1a\u4f7f\u7528 Arrays.asList()<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>Arrays.asList() \u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u7531\u6307\u5b9a\u6570\u7ec4\u5143\u7d20\u652f\u6301\u7684\u56fa\u5b9a\u5927\u5c0f\u7684\u5217\u8868\u3002\u6b64\u65b9\u6cd5\u7b80\u5355\u4e14\u6613\u4e8e\u4f7f\u7528\uff0c\u4f46\u5b58\u5728\u4ee5\u4e0b\u9650\u5236\uff1a<\/p>\n<ul>\n<li>\u8fd4\u56de\u7684\u5217\u8868\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u8fd9\u610f\u5473\u7740\u65e0\u6cd5\u4fee\u6539\u6216\u6dfb\u52a0\u5143\u7d20\u3002<\/li>\n<li>\u5982\u679c\u539f\u59cb\u6570\u7ec4\u5305\u542b\u57fa\u672c\u7c7b\u578b\uff08\u5982 int \u6216 double\uff09\uff0c\u5219\u8be5\u65b9\u6cd5\u4f1a\u5305\u88c5\u5b83\u4eec\u5e76\u8fd4\u56de\u4e00\u4e2a\u5bf9\u8c61\u6570\u7ec4\u3002<\/li>\n<\/ul>\n<pre>int[] arr = {1, 2, 3};\nList&lt;Integer&gt; list = Arrays.asList(arr);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u65b9\u6cd5 2\uff1a\u4f7f\u7528 new ArrayList(Arrays.asList())<\/strong><\/p>\n<p>\u4e3a\u4e86\u83b7\u5f97\u4e00\u4e2a\u53ef\u53d8\u7684\u548c\u5f3a\u7c7b\u578b\u7684\u5217\u8868\uff0c\u53ef\u4ee5\u4f7f\u7528 new ArrayList(Arrays.asList())\u3002\u6b64\u65b9\u6cd5\u5c06\u57fa\u672c\u7c7b\u578b\u5143\u7d20\u8f6c\u6362\u4e3a\u5b83\u4eec\u7684\u76f8\u5e94\u5305\u88c5\u7c7b\u578b\u3002<\/p>\n<pre>int[] arr = {1, 2, 3};\nList&lt;Integer&gt; list = new ArrayList&lt;&gt;(Arrays.asList(arr));<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u65b9\u6cd5 3\uff1a\u4f7f\u7528 Stream.of()<\/strong><\/p>\n<p>Java 8 \u5f15\u5165\u4e86 Stream.of() \u65b9\u6cd5\uff0c\u5b83\u53ef\u4ee5\u521b\u5efa\u4e00\u7ec4\u5143\u7d20\u3002\u6b64\u65b9\u6cd5\u53ef\u4ee5\u4e0e collect(Collectors.toList()) \u4e00\u8d77\u4f7f\u7528\u6765\u521b\u5efa\u96c6\u5408\u3002<\/p>\n<pre>int[] arr = {1, 2, 3};\nList&lt;Integer&gt; list = Stream.of(arr).collect(Collectors.toList());<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u7ed3\u8bba<\/strong><\/p>\n<p>\u9009\u62e9\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u96c6\u5408\u7684\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5e94\u7528\u7a0b\u5e8f\u7684\u8981\u6c42\u3002\u5bf9\u4e8e\u4e0d\u53ef\u53d8\u7684\u5217\u8868\uff0cArrays.asList() \u662f\u6700\u5feb\u6377\u7684\u65b9\u6cd5\u3002\u5bf9\u4e8e\u53ef\u53d8\u548c\u5f3a\u7c7b\u578b\u7684\u5217\u8868\uff0cnew ArrayList(Arrays.asList()) \u6216 Stream.of() \u662f\u66f4\u5408\u9002\u7684\u9009\u62e9\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u6570\u7ec4\u600e\u4e48\u8f6c\u5316\u4e3a\u96c6\u5408\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 \u6570\u7ec4\u53ef\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u8f6c\u6362\u4e3a\u96c6\u5408\uff1aarrays.aslist()\uff1a\u8fd4\u56de\u4e00\u4e2a\u56fa\u5b9a\u5927\u5c0f\u7684\u4e0d\u53ef\u53d8\u5217\u8868\u3002new arraylist(arrays.aslist())\uff1a\u8fd4\u56de\u4e00\u4e2a\u53ef\u53d8\u7684\u5f3a\u7c7b\u578b\u5217\u8868\u3002stream.of()\uff1a\u521b\u5efa\u4e00\u4e2a\u5143\u7d20\u96c6\uff0c\u4e0e collect(collectors.tolist()) \u4e00\u8d77\u4f7f\u7528\u521b\u5efa\u96c6\u5408\u3002 Java \u6570\u7ec4\u8f6c\u6362\u4e3a\u96c6\u5408 \u7b80\u4ecb \u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u96c6\u5408\u3002\u96c6\u5408\u63d0\u4f9b\u4e86\u6bd4\u6570\u7ec4\u66f4\u7075\u6d3b\u548c\u901a\u7528\u7684\u65b9\u6cd5\u6765\u7ba1\u7406\u6570\u636e\u3002 \u65b9\u6cd5 1\uff1a\u4f7f\u7528 Arrays.asList() \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b Arrays.asList() \u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u7531\u6307\u5b9a\u6570\u7ec4\u5143\u7d20\u652f\u6301\u7684\u56fa\u5b9a\u5927\u5c0f\u7684\u5217\u8868\u3002\u6b64\u65b9\u6cd5\u7b80\u5355\u4e14\u6613\u4e8e\u4f7f\u7528\uff0c\u4f46\u5b58\u5728\u4ee5\u4e0b\u9650\u5236\uff1a \u8fd4\u56de\u7684\u5217\u8868\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u8fd9\u610f\u5473\u7740\u65e0\u6cd5\u4fee\u6539\u6216\u6dfb\u52a0\u5143\u7d20\u3002 \u5982\u679c\u539f\u59cb\u6570\u7ec4\u5305\u542b\u57fa\u672c\u7c7b\u578b\uff08\u5982 int \u6216 double\uff09\uff0c\u5219\u8be5\u65b9\u6cd5\u4f1a\u5305\u88c5\u5b83\u4eec\u5e76\u8fd4\u56de\u4e00\u4e2a\u5bf9\u8c61\u6570\u7ec4\u3002 int[] arr = {1, 2, 3}; List&lt;Integer&gt; list = Arrays.asList(arr); \u767b\u5f55\u540e\u590d\u5236 \u65b9\u6cd5 2\uff1a\u4f7f\u7528 new ArrayList(Arrays.asList()) \u4e3a\u4e86\u83b7\u5f97\u4e00\u4e2a\u53ef\u53d8\u7684\u548c\u5f3a\u7c7b\u578b\u7684\u5217\u8868\uff0c\u53ef\u4ee5\u4f7f\u7528 new ArrayList(Arrays.asList())\u3002\u6b64\u65b9\u6cd5\u5c06\u57fa\u672c\u7c7b\u578b\u5143\u7d20\u8f6c\u6362\u4e3a\u5b83\u4eec\u7684\u76f8\u5e94\u5305\u88c5\u7c7b\u578b\u3002 int[] arr = {1, 2, 3}; List&lt;Integer&gt; list = new ArrayList&lt;&gt;(Arrays.asList(arr)); \u767b\u5f55\u540e\u590d\u5236 \u65b9\u6cd5 3\uff1a\u4f7f\u7528 Stream.of() [&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-37806","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37806","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=37806"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37806\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37806"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37806"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37806"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}