{"id":40202,"date":"2024-11-26T14:25:55","date_gmt":"2024-11-26T06:25:55","guid":{"rendered":"https:\/\/fwq.ai\/blog\/40202\/"},"modified":"2024-11-26T14:25:55","modified_gmt":"2024-11-26T06:25:55","slug":"java%e6%80%8e%e4%b9%88%e8%ae%be%e7%bd%ae%e4%b8%8d%e7%9f%a5%e9%81%93%e9%95%bf%e5%ba%a6%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/40202\/","title":{"rendered":"java\u600e\u4e48\u8bbe\u7f6e\u4e0d\u77e5\u9053\u957f\u5ea6\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  java \u4e2d\u65e0\u6cd5\u521b\u5efa\u4e0d\u77e5\u9053\u957f\u5ea6\u7684\u6570\u7ec4\uff0c\u4f46\u6709\u4ee5\u4e0b\u65b9\u6cd5\u53ef\u4ee5\u53d8\u901a\uff1a\u4f7f\u7528 arraylist\uff0c\u4e00\u4e2a\u52a8\u6001\u957f\u5ea6\u7684\u6570\u7ec4\uff0c\u53ef\u4ee5\u901a\u8fc7 add() \u548c remove() \u65b9\u6cd5\u8c03\u6574\u5927\u5c0f\u3002\u4f7f\u7528\u6570\u7ec4\u5305\u88c5\uff0c\u5982 integer[]\uff0c\u5141\u8bb8\u52a8\u6001\u6dfb\u52a0\u5143\u7d20\uff0c\u4f46\u5e95\u5c42\u6570\u7ec4\u5927\u5c0f\u4ecd\u7136\u662f\u56fa\u5b9a\u7684\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/17\/2024111722460656174.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u8bbe\u7f6e\u4e0d\u77e5\u9053\u957f\u5ea6\u6570\u7ec4\u63d2\u56fe\" alt=\"java\u600e\u4e48\u8bbe\u7f6e\u4e0d\u77e5\u9053\u957f\u5ea6\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528 Java \u8bbe\u7f6e\u4e0d\u77e5\u9053\u957f\u5ea6\u7684\u6570\u7ec4<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u6570\u7ec4\u7684\u5927\u5c0f\u5728\u521b\u5efa\u65f6\u5c31\u88ab\u56fa\u5b9a\u4e86\uff0c\u8fd9\u4f7f\u5f97\u65e0\u6cd5\u521b\u5efa\u4e0d\u77e5\u9053\u957f\u5ea6\u7684\u6570\u7ec4\u3002\u4f46\u662f\uff0c\u6709\u53d8\u901a\u7684\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0\u7c7b\u4f3c\u7684\u6548\u679c\uff1a<\/p>\n<p><strong>\u4f7f\u7528 ArrayList<\/strong><\/p>\n<p>ArrayList \u662f\u4e00\u4e2a\u53ef\u53d8\u957f\u5ea6\u7684\u6570\u7ec4\uff0c\u53ef\u4ee5\u52a8\u6001\u5730\u6dfb\u52a0\u548c\u5220\u9664\u5143\u7d20\u3002\u5b83\u7684\u5e95\u5c42\u5b9e\u73b0\u662f\u4e00\u4e2a\u52a8\u6001\u5927\u5c0f\u7684\u6570\u7ec4\uff0c\u5f53\u5217\u8868\u9700\u8981\u66f4\u591a\u7a7a\u95f4\u65f6\u81ea\u52a8\u6269\u5c55\u3002\u8981\u521b\u5efa ArrayList\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>ArrayList&lt;Integer&gt; numbers = new ArrayList&lt;&gt;();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f7f\u7528\u6570\u7ec4\u5305\u88c5<\/strong><\/p>\n<p>\u6570\u7ec4\u5305\u88c5\u7c7b\uff0c\u5982 Integer[] \u6216 Double[]\uff0c\u53ef\u4ee5\u5141\u8bb8\u6211\u4eec\u52a8\u6001\u5730\u8c03\u6574\u6570\u7ec4\u7684\u5927\u5c0f\u3002\u4e0d\u8fc7\uff0c\u8fd9\u5e76\u4e0d\u662f\u771f\u6b63\u7684\u53ef\u53d8\u957f\u5ea6\u6570\u7ec4\uff0c\u56e0\u4e3a\u5e95\u5c42\u6570\u7ec4\u7684\u5927\u5c0f\u4ecd\u7136\u662f\u56fa\u5b9a\u7684\u3002\u8981\u4f7f\u7528\u6570\u7ec4\u5305\u88c5\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre>Integer[] numbers = new Integer[0];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4e0a\u8ff0\u4ee3\u7801\u521b\u5efa\u4e86\u4e00\u4e2a\u957f\u5ea6\u4e3a 0 \u7684\u6574\u6570\u6570\u7ec4\u5305\u88c5\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 add() \u65b9\u6cd5\u52a8\u6001\u5730\u5411\u6570\u7ec4\u5305\u88c5\u4e2d\u6dfb\u52a0\u5143\u7d20\uff0c\u5b83\u4f1a\u81ea\u52a8\u6269\u5c55\u5e95\u5c42\u6570\u7ec4\u3002<\/p>\n<pre>numbers.add(10);\nnumbers.add(20);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u9700\u8981\u6ce8\u610f\u7684\u4e8b\u9879<\/strong><\/p>\n<ul>\n<li>\u4f7f\u7528 ArrayList \u65f6\uff0c\u9700\u8981\u6ce8\u610f\u5185\u5b58\u5206\u914d\u7684\u5f00\u9500\u3002<\/li>\n<li>\u6570\u7ec4\u5305\u88c5\u63d0\u4f9b\u7684\u6027\u80fd\u53ef\u80fd\u4f1a\u4f4e\u4e8e ArrayList\u3002<\/li>\n<li>\u5982\u679c\u4f60\u77e5\u9053\u6570\u7ec4\u7684\u5927\u6982\u957f\u5ea6\uff0c\u5219\u521b\u5efa\u5927\u5c0f\u5408\u9002\u7684\u6570\u7ec4\u66f4\u52a0\u9ad8\u6548\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u8bbe\u7f6e\u4e0d\u77e5\u9053\u957f\u5ea6\u6570\u7ec4\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 \u4e2d\u65e0\u6cd5\u521b\u5efa\u4e0d\u77e5\u9053\u957f\u5ea6\u7684\u6570\u7ec4\uff0c\u4f46\u6709\u4ee5\u4e0b\u65b9\u6cd5\u53ef\u4ee5\u53d8\u901a\uff1a\u4f7f\u7528 arraylist\uff0c\u4e00\u4e2a\u52a8\u6001\u957f\u5ea6\u7684\u6570\u7ec4\uff0c\u53ef\u4ee5\u901a\u8fc7 add() \u548c remove() \u65b9\u6cd5\u8c03\u6574\u5927\u5c0f\u3002\u4f7f\u7528\u6570\u7ec4\u5305\u88c5\uff0c\u5982 integer[]\uff0c\u5141\u8bb8\u52a8\u6001\u6dfb\u52a0\u5143\u7d20\uff0c\u4f46\u5e95\u5c42\u6570\u7ec4\u5927\u5c0f\u4ecd\u7136\u662f\u56fa\u5b9a\u7684\u3002 \u5982\u4f55\u4f7f\u7528 Java \u8bbe\u7f6e\u4e0d\u77e5\u9053\u957f\u5ea6\u7684\u6570\u7ec4 \u5728 Java \u4e2d\uff0c\u6570\u7ec4\u7684\u5927\u5c0f\u5728\u521b\u5efa\u65f6\u5c31\u88ab\u56fa\u5b9a\u4e86\uff0c\u8fd9\u4f7f\u5f97\u65e0\u6cd5\u521b\u5efa\u4e0d\u77e5\u9053\u957f\u5ea6\u7684\u6570\u7ec4\u3002\u4f46\u662f\uff0c\u6709\u53d8\u901a\u7684\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0\u7c7b\u4f3c\u7684\u6548\u679c\uff1a \u4f7f\u7528 ArrayList ArrayList \u662f\u4e00\u4e2a\u53ef\u53d8\u957f\u5ea6\u7684\u6570\u7ec4\uff0c\u53ef\u4ee5\u52a8\u6001\u5730\u6dfb\u52a0\u548c\u5220\u9664\u5143\u7d20\u3002\u5b83\u7684\u5e95\u5c42\u5b9e\u73b0\u662f\u4e00\u4e2a\u52a8\u6001\u5927\u5c0f\u7684\u6570\u7ec4\uff0c\u5f53\u5217\u8868\u9700\u8981\u66f4\u591a\u7a7a\u95f4\u65f6\u81ea\u52a8\u6269\u5c55\u3002\u8981\u521b\u5efa ArrayList\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b ArrayList&lt;Integer&gt; numbers = new ArrayList&lt;&gt;(); \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528\u6570\u7ec4\u5305\u88c5 \u6570\u7ec4\u5305\u88c5\u7c7b\uff0c\u5982 Integer[] \u6216 Double[]\uff0c\u53ef\u4ee5\u5141\u8bb8\u6211\u4eec\u52a8\u6001\u5730\u8c03\u6574\u6570\u7ec4\u7684\u5927\u5c0f\u3002\u4e0d\u8fc7\uff0c\u8fd9\u5e76\u4e0d\u662f\u771f\u6b63\u7684\u53ef\u53d8\u957f\u5ea6\u6570\u7ec4\uff0c\u56e0\u4e3a\u5e95\u5c42\u6570\u7ec4\u7684\u5927\u5c0f\u4ecd\u7136\u662f\u56fa\u5b9a\u7684\u3002\u8981\u4f7f\u7528\u6570\u7ec4\u5305\u88c5\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a Integer[] numbers = new Integer[0]; \u767b\u5f55\u540e\u590d\u5236 \u4e0a\u8ff0\u4ee3\u7801\u521b\u5efa\u4e86\u4e00\u4e2a\u957f\u5ea6\u4e3a 0 \u7684\u6574\u6570\u6570\u7ec4\u5305\u88c5\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 add() \u65b9\u6cd5\u52a8\u6001\u5730\u5411\u6570\u7ec4\u5305\u88c5\u4e2d\u6dfb\u52a0\u5143\u7d20\uff0c\u5b83\u4f1a\u81ea\u52a8\u6269\u5c55\u5e95\u5c42\u6570\u7ec4\u3002 numbers.add(10); numbers.add(20); \u767b\u5f55\u540e\u590d\u5236 \u9700\u8981\u6ce8\u610f\u7684\u4e8b\u9879 \u4f7f\u7528 ArrayList \u65f6\uff0c\u9700\u8981\u6ce8\u610f\u5185\u5b58\u5206\u914d\u7684\u5f00\u9500\u3002 \u6570\u7ec4\u5305\u88c5\u63d0\u4f9b\u7684\u6027\u80fd\u53ef\u80fd\u4f1a\u4f4e\u4e8e ArrayList\u3002 \u5982\u679c\u4f60\u77e5\u9053\u6570\u7ec4\u7684\u5927\u6982\u957f\u5ea6\uff0c\u5219\u521b\u5efa\u5927\u5c0f\u5408\u9002\u7684\u6570\u7ec4\u66f4\u52a0\u9ad8\u6548\u3002 \u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u8bbe\u7f6e\u4e0d\u77e5\u9053\u957f\u5ea6\u6570\u7ec4\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/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-40202","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/40202","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=40202"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/40202\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=40202"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=40202"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=40202"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}