{"id":65634,"date":"2025-05-03T14:49:20","date_gmt":"2025-05-03T06:49:20","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65634\/"},"modified":"2025-05-03T14:49:20","modified_gmt":"2025-05-03T06:49:20","slug":"java%e4%b8%ad%e5%8a%a8%e6%80%81%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e5%ae%9a%e4%b9%89-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65634\/","title":{"rendered":"java\u4e2d\u52a8\u6001\u6570\u7ec4\u600e\u4e48\u5b9a\u4e49"},"content":{"rendered":"<blockquote><p>\n  java \u4e2d\u7684\u52a8\u6001\u6570\u7ec4\u79f0\u4e3a arraylist\uff0c\u662f\u4e00\u79cd\u53ef\u53d8\u957f\u5ea6\u7684\u96c6\u5408\u7c7b\uff0c\u7528\u4e8e\u5b58\u50a8\u76f8\u540c\u7c7b\u578b\u7684\u6570\u636e\u3002\u8981\u5b9a\u4e49\u4e00\u4e2a\u52a8\u6001\u6570\u7ec4\uff0c\u8bf7\u4f7f\u7528 arraylist \u7c7b\uff0c\u4f8b\u5982\uff1aarraylist names = new arraylist()\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528 add() \u65b9\u6cd5\u6dfb\u52a0\u5143\u7d20\uff0c\u4f7f\u7528 get() \u65b9\u6cd5\u83b7\u53d6\u5143\u7d20\uff0c\u4f7f\u7528 remove() \u65b9\u6cd5\u79fb\u9664\u5143\u7d20\uff0c\u4f7f\u7528 size() \u65b9\u6cd5\u786e\u5b9a\u5927\u5c0f\uff0c\u5e76\u4f7f\u7528 for \u5faa\u73af\u904d\u5386\u5143\u7d20\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111306005610383.jpg\" class=\"aligncenter\" title=\"java\u4e2d\u52a8\u6001\u6570\u7ec4\u600e\u4e48\u5b9a\u4e49\u63d2\u56fe\" alt=\"java\u4e2d\u52a8\u6001\u6570\u7ec4\u600e\u4e48\u5b9a\u4e49\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 Java \u4e2d\u5b9a\u4e49\u52a8\u6001\u6570\u7ec4<\/strong><\/p>\n<p>Java \u4e2d\u7684\u52a8\u6001\u6570\u7ec4\u53c8\u79f0\u4e3a ArrayList\u3002\u5176\u662f\u4e00\u79cd\u53ef\u53d8\u957f\u5ea6\u7684\u96c6\u5408\u7c7b\uff0c\u5141\u8bb8\u5b58\u50a8\u76f8\u540c\u7c7b\u578b\u7684\u6570\u636e\u3002\u8981\u5b9a\u4e49\u4e00\u4e2a\u52a8\u6001\u6570\u7ec4\uff0c\u9700\u8981\u4f7f\u7528 ArrayList \u7c7b\u3002<\/p>\n<p><strong>\u58f0\u660e ArrayList<\/strong><\/p>\n<pre>import java.util.ArrayList;\n\npublic class DynamicArrayExample {\n\n    public static void main(String[] args) {\n        \/\/ \u521b\u5efa\u4e00\u4e2a\u52a8\u6001\u6570\u7ec4\uff08ArrayList\uff09\u6765\u5b58\u50a8\u5b57\u7b26\u4e32\n        ArrayList&lt;String&gt; names = new ArrayList&lt;&gt;();\n    }\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6dfb\u52a0\u5143\u7d20<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528 add() \u65b9\u6cd5\u5c06\u5143\u7d20\u6dfb\u52a0\u5230\u52a8\u6001\u6570\u7ec4\u4e2d\u3002<\/p>\n<pre>names.add(\"Alice\");\nnames.add(\"Bob\");\nnames.add(\"Charlie\");<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u83b7\u53d6\u5143\u7d20<\/strong><\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528 get() \u65b9\u6cd5\u6839\u636e\u7d22\u5f15\u6765\u83b7\u53d6\u52a8\u6001\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u3002<\/p>\n<pre>String firstElement = names.get(0); \/\/ \u83b7\u53d6\u7b2c\u4e00\u4e2a\u5143\u7d20\uff08Alice\uff09<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u79fb\u9664\u5143\u7d20<\/strong><\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528 remove() \u65b9\u6cd5\u6839\u636e\u7d22\u5f15\u6216\u5143\u7d20\u503c\u6765\u79fb\u9664\u52a8\u6001\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u3002<\/p>\n<pre>names.remove(1); \/\/ \u79fb\u9664\u7b2c\u4e8c\u4e2a\u5143\u7d20\uff08Bob\uff09\nnames.remove(\"Alice\"); \/\/ \u79fb\u9664 \"Alice\" \u5143\u7d20<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u786e\u5b9a\u5927\u5c0f<\/strong><\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528 size() \u65b9\u6cd5\u6765\u786e\u5b9a\u52a8\u6001\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u6570\u91cf\u3002<\/p>\n<pre>int size = names.size(); \/\/ \u83b7\u53d6\u52a8\u6001\u6570\u7ec4\u7684\u5927\u5c0f\uff082\uff09<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u904d\u5386\u5143\u7d20<\/strong><\/p>\n<p>\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u5f0f\u904d\u5386\u52a8\u6001\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u3002\u4ee5\u4e0b\u4f7f\u7528\u589e\u5f3a\u578b for \u5faa\u73af\uff1a<\/p>\n<pre>for (String name : names) {\n    System.out.println(name); \/\/ \u8f93\u51fa\u52a8\u6001\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u4e2d\u52a8\u6001\u6570\u7ec4\u600e\u4e48\u5b9a\u4e49\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>java \u4e2d\u7684\u52a8\u6001\u6570\u7ec4\u79f0\u4e3a arraylist\uff0c\u662f\u4e00\u79cd\u53ef\u53d8\u957f\u5ea6\u7684\u96c6\u5408\u7c7b\uff0c\u7528\u4e8e\u5b58\u50a8\u76f8\u540c\u7c7b\u578b\u7684\u6570\u636e\u3002\u8981\u5b9a\u4e49\u4e00\u4e2a\u52a8\u6001\u6570\u7ec4\uff0c\u8bf7\u4f7f\u7528 arraylist \u7c7b\uff0c\u4f8b\u5982\uff1aarraylist names = new arraylist()\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528 add() \u65b9\u6cd5\u6dfb\u52a0\u5143\u7d20\uff0c\u4f7f\u7528 get() \u65b9\u6cd5\u83b7\u53d6\u5143\u7d20\uff0c\u4f7f\u7528 remove() \u65b9\u6cd5\u79fb\u9664\u5143\u7d20\uff0c\u4f7f\u7528 size() \u65b9\u6cd5\u786e\u5b9a\u5927\u5c0f\uff0c\u5e76\u4f7f\u7528 for \u5faa\u73af\u904d\u5386\u5143\u7d20\u3002 \u5982\u4f55\u5728 Java \u4e2d\u5b9a\u4e49\u52a8\u6001\u6570\u7ec4 Java \u4e2d\u7684\u52a8\u6001\u6570\u7ec4\u53c8\u79f0\u4e3a ArrayList\u3002\u5176\u662f\u4e00\u79cd\u53ef\u53d8\u957f\u5ea6\u7684\u96c6\u5408\u7c7b\uff0c\u5141\u8bb8\u5b58\u50a8\u76f8\u540c\u7c7b\u578b\u7684\u6570\u636e\u3002\u8981\u5b9a\u4e49\u4e00\u4e2a\u52a8\u6001\u6570\u7ec4\uff0c\u9700\u8981\u4f7f\u7528 ArrayList \u7c7b\u3002 \u58f0\u660e ArrayList import java.util.ArrayList; public class DynamicArrayExample { public static void main(String[] args) { \/\/ \u521b\u5efa\u4e00\u4e2a\u52a8\u6001\u6570\u7ec4\uff08ArrayList\uff09\u6765\u5b58\u50a8\u5b57\u7b26\u4e32 ArrayList&lt;String&gt; names = new ArrayList&lt;&gt;(); } } \u767b\u5f55\u540e\u590d\u5236 \u6dfb\u52a0\u5143\u7d20 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u53ef\u4ee5\u4f7f\u7528 add() [&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-65634","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65634","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=65634"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65634\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65634"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65634"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65634"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}