{"id":65388,"date":"2025-05-03T10:27:33","date_gmt":"2025-05-03T02:27:33","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65388\/"},"modified":"2025-05-03T10:27:33","modified_gmt":"2025-05-03T02:27:33","slug":"java%e6%80%8e%e4%b9%88%e7%94%a8%e5%8a%a8%e6%80%81%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65388\/","title":{"rendered":"java\u600e\u4e48\u7528\u52a8\u6001\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  \u4ec0\u4e48\u662f\u52a8\u6001\u6570\u7ec4\uff1f java \u4e2d\u7684\u52a8\u6001\u6570\u7ec4\uff08arraylist\uff09\u5141\u8bb8\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u8c03\u6574\u5176\u5927\u5c0f\uff0c\u5b58\u50a8\u5728\u5e95\u5c42\u6570\u7ec4\u4e2d\u5e76\u6839\u636e\u9700\u8981\u8c03\u6574\u5927\u5c0f\u3002\u5982\u4f55\u4f7f\u7528\u52a8\u6001\u6570\u7ec4\uff1f\u5bfc\u5165 arraylist \u7c7b\u3002\u521b\u5efa arraylist \u5bf9\u8c61\u3002\u4f7f\u7528 add() \u6dfb\u52a0\u5143\u7d20\u3002\u4f7f\u7528 get() \u83b7\u53d6\u5143\u7d20\u3002\u4f7f\u7528 remove() \u5220\u9664\u5143\u7d20\u3002arraylist \u4f1a\u81ea\u52a8\u8c03\u6574\u5927\u5c0f\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/12\/2024111223062351401.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u7528\u52a8\u6001\u6570\u7ec4\u63d2\u56fe\" alt=\"java\u600e\u4e48\u7528\u52a8\u6001\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u4e2d\u4f7f\u7528\u52a8\u6001\u6570\u7ec4<\/strong><\/p>\n<p><strong>\u4ec0\u4e48\u662f\u52a8\u6001\u6570\u7ec4\uff1f<\/strong><\/p>\n<p>\u52a8\u6001\u6570\u7ec4\uff08\u4e5f\u79f0 ArrayList\uff09\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u5141\u8bb8\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u8c03\u6574\u5176\u5927\u5c0f\u3002\u5b83\u901a\u8fc7\u5c06\u5143\u7d20\u5b58\u50a8\u5728\u5e95\u5c42\u6570\u7ec4\u4e2d\u6765\u5b9e\u73b0\uff0c\u5e76\u6839\u636e\u9700\u8981\u81ea\u52a8\u8c03\u6574\u6570\u7ec4\u7684\u5927\u5c0f\u3002<\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528\u52a8\u6001\u6570\u7ec4\uff1f<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>\u5728 Java \u4e2d\u4f7f\u7528\u52a8\u6001\u6570\u7ec4\uff0c\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u8fdb\u884c\uff1a<\/p>\n<ol>\n<li> <strong>\u5bfc\u5165 ArrayList \u7c7b\uff1a<\/strong>\u5728\u4f60\u7684 Java \u7a0b\u5e8f\u4e2d\u5bfc\u5165 java.util.ArrayList \u7c7b\u3002<\/li>\n<li> <strong>\u521b\u5efa ArrayList \u5bf9\u8c61\uff1a<\/strong>\u4f7f\u7528 new \u8fd0\u7b97\u7b26\u521b\u5efa\u4e00\u4e2a ArrayList \u5bf9\u8c61\u3002<\/li>\n<li> <strong>\u6dfb\u52a0\u5143\u7d20\uff1a<\/strong>\u4f7f\u7528 add() \u65b9\u6cd5\u5411 ArrayList \u4e2d\u6dfb\u52a0\u5143\u7d20\u3002<\/li>\n<li> <strong>\u83b7\u53d6\u5143\u7d20\uff1a<\/strong>\u4f7f\u7528 get() \u65b9\u6cd5\u4ece ArrayList \u4e2d\u83b7\u53d6\u7279\u5b9a\u7d22\u5f15\u5904\u7684\u5143\u7d20\u3002<\/li>\n<li> <strong>\u5220\u9664\u5143\u7d20\uff1a<\/strong>\u4f7f\u7528 remove() \u65b9\u6cd5\u4ece ArrayList \u4e2d\u5220\u9664\u7279\u5b9a\u7684\u5143\u7d20\u3002<\/li>\n<li> <strong>\u8c03\u6574\u5927\u5c0f\uff1a<\/strong>ArrayList \u4f1a\u6839\u636e\u9700\u8981\u81ea\u52a8\u8c03\u6574\u5176\u5927\u5c0f\uff0c\u4f46\u4f60\u4e5f\u53ef\u4ee5\u4f7f\u7528 trimToSize() \u65b9\u6cd5\u6765\u91ca\u653e\u4efb\u4f55\u672a\u4f7f\u7528\u7684\u7a7a\u95f4\u3002<\/li>\n<\/ol>\n<p><strong>\u793a\u4f8b\uff1a<\/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 ArrayList \u5bf9\u8c61\n        ArrayList&lt;String&gt; names = new ArrayList&lt;&gt;();\n\n        \/\/ \u6dfb\u52a0\u5143\u7d20\n        names.add(\"John\");\n        names.add(\"Mary\");\n        names.add(\"Bob\");\n\n        \/\/ \u83b7\u53d6\u5143\u7d20\n        System.out.println(names.get(1)); \/\/ Mary\n\n        \/\/ \u5220\u9664\u5143\u7d20\n        names.remove(0); \/\/ John\n\n        \/\/ \u8c03\u6574\u5927\u5c0f\n        names.trimToSize(); \/\/ \u91ca\u653e\u672a\u4f7f\u7528\u7684\u7a7a\u95f4\n\n        \/\/ \u904d\u5386 ArrayList\n        for (String name : names) {\n            System.out.println(name);\n        }\n    }\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f18\u70b9\uff1a<\/strong><\/p>\n<ul>\n<li>\u52a8\u6001\u8c03\u6574\u5927\u5c0f\uff0c\u65e0\u9700\u624b\u52a8\u7ba1\u7406\u6570\u7ec4\u5927\u5c0f<\/li>\n<li>\u6613\u4e8e\u4f7f\u7528\uff0c\u63d0\u4f9b\u4e30\u5bcc\u7684 API<\/li>\n<li>\u5728\u9700\u8981\u5b58\u50a8\u5927\u91cf\u6570\u636e\u65f6\uff0c\u6bd4\u666e\u901a\u6570\u7ec4\u66f4\u6709\u6548\u7387<\/li>\n<\/ul>\n<p><strong>\u7f3a\u70b9\uff1a<\/strong><\/p>\n<ul>\n<li>\u53ef\u80fd\u6bd4\u666e\u901a\u6570\u7ec4\u66f4\u8017\u8d39\u5185\u5b58\uff0c\u56e0\u4e3a\u9700\u8981\u989d\u5916\u7684\u7a7a\u95f4\u6765\u7ba1\u7406\u6570\u7ec4\u5927\u5c0f<\/li>\n<li>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u6bd4\u666e\u901a\u6570\u7ec4\u7684\u901f\u5ea6\u53ef\u80fd\u4f1a\u6162\u4e00\u4e9b<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u7528\u52a8\u6001\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":"<p>\u4ec0\u4e48\u662f\u52a8\u6001\u6570\u7ec4\uff1f java \u4e2d\u7684\u52a8\u6001\u6570\u7ec4\uff08arraylist\uff09\u5141\u8bb8\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u8c03\u6574\u5176\u5927\u5c0f\uff0c\u5b58\u50a8\u5728\u5e95\u5c42\u6570\u7ec4\u4e2d\u5e76\u6839\u636e\u9700\u8981\u8c03\u6574\u5927\u5c0f\u3002\u5982\u4f55\u4f7f\u7528\u52a8\u6001\u6570\u7ec4\uff1f\u5bfc\u5165 arraylist \u7c7b\u3002\u521b\u5efa arraylist \u5bf9\u8c61\u3002\u4f7f\u7528 add() \u6dfb\u52a0\u5143\u7d20\u3002\u4f7f\u7528 get() \u83b7\u53d6\u5143\u7d20\u3002\u4f7f\u7528 remove() \u5220\u9664\u5143\u7d20\u3002arraylist \u4f1a\u81ea\u52a8\u8c03\u6574\u5927\u5c0f\u3002 Java \u4e2d\u4f7f\u7528\u52a8\u6001\u6570\u7ec4 \u4ec0\u4e48\u662f\u52a8\u6001\u6570\u7ec4\uff1f \u52a8\u6001\u6570\u7ec4\uff08\u4e5f\u79f0 ArrayList\uff09\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u5141\u8bb8\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u8c03\u6574\u5176\u5927\u5c0f\u3002\u5b83\u901a\u8fc7\u5c06\u5143\u7d20\u5b58\u50a8\u5728\u5e95\u5c42\u6570\u7ec4\u4e2d\u6765\u5b9e\u73b0\uff0c\u5e76\u6839\u636e\u9700\u8981\u81ea\u52a8\u8c03\u6574\u6570\u7ec4\u7684\u5927\u5c0f\u3002 \u5982\u4f55\u4f7f\u7528\u52a8\u6001\u6570\u7ec4\uff1f \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u5728 Java \u4e2d\u4f7f\u7528\u52a8\u6001\u6570\u7ec4\uff0c\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u8fdb\u884c\uff1a \u5bfc\u5165 ArrayList \u7c7b\uff1a\u5728\u4f60\u7684 Java \u7a0b\u5e8f\u4e2d\u5bfc\u5165 java.util.ArrayList \u7c7b\u3002 \u521b\u5efa ArrayList \u5bf9\u8c61\uff1a\u4f7f\u7528 new \u8fd0\u7b97\u7b26\u521b\u5efa\u4e00\u4e2a ArrayList \u5bf9\u8c61\u3002 \u6dfb\u52a0\u5143\u7d20\uff1a\u4f7f\u7528 add() \u65b9\u6cd5\u5411 ArrayList \u4e2d\u6dfb\u52a0\u5143\u7d20\u3002 \u83b7\u53d6\u5143\u7d20\uff1a\u4f7f\u7528 get() \u65b9\u6cd5\u4ece ArrayList \u4e2d\u83b7\u53d6\u7279\u5b9a\u7d22\u5f15\u5904\u7684\u5143\u7d20\u3002 \u5220\u9664\u5143\u7d20\uff1a\u4f7f\u7528 remove() \u65b9\u6cd5\u4ece ArrayList \u4e2d\u5220\u9664\u7279\u5b9a\u7684\u5143\u7d20\u3002 \u8c03\u6574\u5927\u5c0f\uff1aArrayList \u4f1a\u6839\u636e\u9700\u8981\u81ea\u52a8\u8c03\u6574\u5176\u5927\u5c0f\uff0c\u4f46\u4f60\u4e5f\u53ef\u4ee5\u4f7f\u7528 [&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-65388","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65388","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=65388"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65388\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65388"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65388"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65388"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}