{"id":66640,"date":"2025-05-03T14:49:05","date_gmt":"2025-05-03T06:49:05","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66640\/"},"modified":"2025-05-03T14:49:05","modified_gmt":"2025-05-03T06:49:05","slug":"java%e6%80%8e%e4%b9%88%e5%be%80%e6%95%b0%e7%bb%84%e9%87%8c%e5%8a%a0%e5%85%83%e7%b4%a0-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66640\/","title":{"rendered":"java\u600e\u4e48\u5f80\u6570\u7ec4\u91cc\u52a0\u5143\u7d20"},"content":{"rendered":"<blockquote><p>\n  \u5411 java \u6570\u7ec4\u4e2d\u6dfb\u52a0\u5143\u7d20\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528 array.copyof() \u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u5305\u542b\u539f\u59cb\u6570\u7ec4\u548c\u65b0\u5143\u7d20\u3002\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u53ef\u4fee\u6539\u7684 list\uff0c\u4f7f\u7528 list \u7684 add() \u65b9\u6cd5\u6dfb\u52a0\u5143\u7d20\uff0c\u7136\u540e\u5c06\u5176\u8f6c\u6362\u4e3a\u65b0\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/16\/2024111611331811866.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u5f80\u6570\u7ec4\u91cc\u52a0\u5143\u7d20\u63d2\u56fe\" alt=\"java\u600e\u4e48\u5f80\u6570\u7ec4\u91cc\u52a0\u5143\u7d20\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5411 Java \u6570\u7ec4\u6dfb\u52a0\u5143\u7d20<\/strong><\/p>\n<p>Java \u4e2d\u7684\u6570\u7ec4\u662f\u4e00\u79cd\u56fa\u5b9a\u5927\u5c0f\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5b58\u50a8\u76f8\u540c\u6570\u636e\u7c7b\u578b\u7684\u5143\u7d20\u3002\u8981\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u5143\u7d20\uff0c\u6709\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\uff1a<\/p>\n<p><strong>1. \u4f7f\u7528 Array.copyOf() \u65b9\u6cd5<\/strong><\/p>\n<p>\u8be5\u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5305\u542b\u539f\u59cb\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\u4ee5\u53ca\u4e00\u4e2a\u6216\u591a\u4e2a\u65b0\u5143\u7d20\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p><strong>\u8bed\u6cd5\uff1a<\/strong><\/p>\n<pre>int[] newArray = Arrays.copyOf(array, array.length + 1);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>int[] numbers = {1, 2, 3};\nint[] newNumbers = Arrays.copyOf(numbers, numbers.length + 1);\nnewNumbers[newNumbers.length - 1] = 4;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u4f7f\u7528 java.util.Arrays.asList() \u65b9\u6cd5<\/strong><\/p>\n<p>\u8be5\u65b9\u6cd5\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u4e00\u4e2a\u53ef\u4fee\u6539\u7684 List\u3002\u7136\u540e\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 List \u7684 add() \u65b9\u6cd5\u5411\u5217\u8868\u4e2d\u6dfb\u52a0\u5143\u7d20\u3002<\/p>\n<p><strong>\u8bed\u6cd5\uff1a<\/strong><\/p>\n<pre>List&lt;Integer&gt; list = Arrays.asList(array);\nlist.add(4);\narray = list.toArray(new Integer[list.size()]);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>int[] numbers = {1, 2, 3};\nList&lt;Integer&gt; list = Arrays.asList(numbers);\nlist.add(4);\nnumbers = list.toArray(new Integer[list.size()]);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u5f80\u6570\u7ec4\u91cc\u52a0\u5143\u7d20\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>\u5411 java \u6570\u7ec4\u4e2d\u6dfb\u52a0\u5143\u7d20\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a\u4f7f\u7528 array.copyof() \u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u5305\u542b\u539f\u59cb\u6570\u7ec4\u548c\u65b0\u5143\u7d20\u3002\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u53ef\u4fee\u6539\u7684 list\uff0c\u4f7f\u7528 list \u7684 add() \u65b9\u6cd5\u6dfb\u52a0\u5143\u7d20\uff0c\u7136\u540e\u5c06\u5176\u8f6c\u6362\u4e3a\u65b0\u6570\u7ec4\u3002 \u5982\u4f55\u5411 Java \u6570\u7ec4\u6dfb\u52a0\u5143\u7d20 Java \u4e2d\u7684\u6570\u7ec4\u662f\u4e00\u79cd\u56fa\u5b9a\u5927\u5c0f\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5b58\u50a8\u76f8\u540c\u6570\u636e\u7c7b\u578b\u7684\u5143\u7d20\u3002\u8981\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u5143\u7d20\uff0c\u6709\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\uff1a 1. \u4f7f\u7528 Array.copyOf() \u65b9\u6cd5 \u8be5\u65b9\u6cd5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u5305\u542b\u539f\u59cb\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\u4ee5\u53ca\u4e00\u4e2a\u6216\u591a\u4e2a\u65b0\u5143\u7d20\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u8bed\u6cd5\uff1a int[] newArray = Arrays.copyOf(array, array.length + 1); \u767b\u5f55\u540e\u590d\u5236 \u793a\u4f8b\uff1a int[] numbers = {1, 2, 3}; int[] newNumbers = Arrays.copyOf(numbers, numbers.length + 1); newNumbers[newNumbers.length &#8211; 1] = 4; \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 java.util.Arrays.asList() \u65b9\u6cd5 \u8be5\u65b9\u6cd5\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u4e00\u4e2a\u53ef\u4fee\u6539\u7684 [&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-66640","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66640","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=66640"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66640\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66640"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66640"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66640"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}