{"id":65246,"date":"2025-05-03T15:16:33","date_gmt":"2025-05-03T07:16:33","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65246\/"},"modified":"2025-05-03T15:16:33","modified_gmt":"2025-05-03T07:16:33","slug":"java-%e6%95%b0%e7%bb%84%e6%80%8e%e4%b9%88%e6%8e%a5%e6%94%b6-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65246\/","title":{"rendered":"java \u6570\u7ec4\u600e\u4e48\u63a5\u6536"},"content":{"rendered":"<blockquote><p>\n  java\u6570\u7ec4\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\u63a5\u6536\u6570\u636e\uff1a\u624b\u52a8\u8d4b\u503c\uff1a\u521b\u5efa\u6570\u7ec4\u5e76\u9010\u4e2a\u5143\u7d20\u8d4b\u503c\u3002\u901a\u8fc7\u65b9\u6cd5\u6216\u6784\u9020\u51fd\u6570\u8c03\u7528\uff1a\u8c03\u7528\u5e26\u6709\u6570\u7ec4\u53c2\u6570\u7684\u65b9\u6cd5\u6216\u6784\u9020\u51fd\u6570\u5e76\u4f20\u9012\u6570\u636e\u3002\u5bf9\u4e8e\u52a8\u6001\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528add()\u65b9\u6cd5\u6dfb\u52a0\u5143\u7d20\u3002\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u4ece\u5176\u4ed6\u6570\u7ec4\u6216\u96c6\u5408\u4e2d\u63a5\u6536\u6570\u636e\uff0c\u65b9\u6cd5\u662f\u4f7f\u7528arrays.copyof()\u6216list.toarray()\u65b9\u6cd5\u5c06\u5176\u8f6c\u6362\u4e3a\u6570\u7ec4\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/12\/2024111214243437003.jpg\" class=\"aligncenter\" title=\"java \u6570\u7ec4\u600e\u4e48\u63a5\u6536\u63d2\u56fe\" alt=\"java \u6570\u7ec4\u600e\u4e48\u63a5\u6536\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u6570\u7ec4\u5982\u4f55\u63a5\u6536\u6570\u636e<\/strong><\/p>\n<p>Java \u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u53ef\u7528\u4e8e\u5b58\u50a8\u76f8\u540c\u7c7b\u578b\u7684\u5143\u7d20\u5e8f\u5217\u3002\u8981\u63a5\u6536\u6570\u636e\u5230 Java \u6570\u7ec4\uff0c\u6709\u4ee5\u4e0b\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\uff1a<\/p>\n<p><strong>1. \u624b\u52a8\u8d4b\u503c<\/strong><\/p>\n<ul>\n<li>\u624b\u52a8\u521b\u5efa\u6570\u7ec4\uff0c\u5e76\u9010\u4e2a\u5143\u7d20\u8d4b\u503c\u3002<\/li>\n<li>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>int[] myInts = new int[5]; \/\/ \u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a 5 \u7684\u6570\u7ec4\nmyInts[0] = 1;\nmyInts[1] = 2;\nmyInts[2] = 3;\nmyInts[3] = 4;\nmyInts[4] = 5;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ul>\n<p><strong>2. \u901a\u8fc7\u65b9\u6cd5\u6216\u6784\u9020\u51fd\u6570<\/strong><\/p>\n<ul>\n<li>\u8c03\u7528\u5e26\u6709\u6570\u7ec4\u53c2\u6570\u7684\u65b9\u6cd5\u6216\u6784\u9020\u51fd\u6570\uff0c\u5e76\u5c06\u6570\u636e\u4f20\u9012\u7ed9\u5b83\u3002<\/li>\n<li>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>\/\/ \u901a\u8fc7\u65b9\u6cd5\u8d4b\u503c\nint[] myInts = createArray(1, 2, 3, 4, 5);\n\n\/\/ \u901a\u8fc7\u6784\u9020\u51fd\u6570\u8d4b\u503c\nint[] myInts = new int[] {1, 2, 3, 4, 5};<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ul>\n<p><strong>\u63a5\u6536\u52a8\u6001\u6570\u7ec4<\/strong><\/p>\n<p>\u5bf9\u4e8e\u52a8\u6001\u6570\u7ec4\uff08\u5982 ArrayList\uff09\uff0c\u53ef\u4ee5\u4f7f\u7528 add() \u65b9\u6cd5\u5411\u6570\u7ec4\u4e2d\u6dfb\u52a0\u5143\u7d20\uff1a<\/p>\n<pre>ArrayList&lt;Integer&gt; myInts = new ArrayList&lt;&gt;();\nmyInts.add(1);\nmyInts.add(2);\nmyInts.add(3);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4ece\u5176\u4ed6\u6570\u7ec4\u6216\u96c6\u5408\u4e2d\u63a5\u6536\u6570\u636e<\/strong><\/p>\n<p>\u8981\u4ece\u5176\u4ed6\u6570\u7ec4\u6216\u96c6\u5408\u4e2d\u63a5\u6536\u6570\u636e\uff0c\u53ef\u4ee5\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u6216 List.toArray() \u65b9\u6cd5\u5c06\u5b83\u4eec\u8f6c\u6362\u4e3a\u6570\u7ec4\uff1a<\/p>\n<pre>int[] originalArray = {1, 2, 3, 4, 5};\n\n\/\/ \u4f7f\u7528 Arrays.copyOf()\nint[] myInts = Arrays.copyOf(originalArray, originalArray.length);\n\n\/\/ \u4f7f\u7528 List.toArray()\nArrayList&lt;Integer&gt; myList = new ArrayList&lt;&gt;(Arrays.asList(1, 2, 3, 4, 5));\nint[] myInts = myList.toArray(new int[myList.size()]);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava \u6570\u7ec4\u600e\u4e48\u63a5\u6536\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\u6570\u7ec4\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\u63a5\u6536\u6570\u636e\uff1a\u624b\u52a8\u8d4b\u503c\uff1a\u521b\u5efa\u6570\u7ec4\u5e76\u9010\u4e2a\u5143\u7d20\u8d4b\u503c\u3002\u901a\u8fc7\u65b9\u6cd5\u6216\u6784\u9020\u51fd\u6570\u8c03\u7528\uff1a\u8c03\u7528\u5e26\u6709\u6570\u7ec4\u53c2\u6570\u7684\u65b9\u6cd5\u6216\u6784\u9020\u51fd\u6570\u5e76\u4f20\u9012\u6570\u636e\u3002\u5bf9\u4e8e\u52a8\u6001\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528add()\u65b9\u6cd5\u6dfb\u52a0\u5143\u7d20\u3002\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u4ece\u5176\u4ed6\u6570\u7ec4\u6216\u96c6\u5408\u4e2d\u63a5\u6536\u6570\u636e\uff0c\u65b9\u6cd5\u662f\u4f7f\u7528arrays.copyof()\u6216list.toarray()\u65b9\u6cd5\u5c06\u5176\u8f6c\u6362\u4e3a\u6570\u7ec4\u3002 Java \u6570\u7ec4\u5982\u4f55\u63a5\u6536\u6570\u636e Java \u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u53ef\u7528\u4e8e\u5b58\u50a8\u76f8\u540c\u7c7b\u578b\u7684\u5143\u7d20\u5e8f\u5217\u3002\u8981\u63a5\u6536\u6570\u636e\u5230 Java \u6570\u7ec4\uff0c\u6709\u4ee5\u4e0b\u4e24\u79cd\u4e3b\u8981\u65b9\u6cd5\uff1a 1. \u624b\u52a8\u8d4b\u503c \u624b\u52a8\u521b\u5efa\u6570\u7ec4\uff0c\u5e76\u9010\u4e2a\u5143\u7d20\u8d4b\u503c\u3002 \u793a\u4f8b\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] myInts = new int[5]; \/\/ \u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a 5 \u7684\u6570\u7ec4 myInts[0] = 1; myInts[1] = 2; myInts[2] = 3; myInts[3] = 4; myInts[4] = 5; \u767b\u5f55\u540e\u590d\u5236 2. \u901a\u8fc7\u65b9\u6cd5\u6216\u6784\u9020\u51fd\u6570 \u8c03\u7528\u5e26\u6709\u6570\u7ec4\u53c2\u6570\u7684\u65b9\u6cd5\u6216\u6784\u9020\u51fd\u6570\uff0c\u5e76\u5c06\u6570\u636e\u4f20\u9012\u7ed9\u5b83\u3002 \u793a\u4f8b\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \/\/ \u901a\u8fc7\u65b9\u6cd5\u8d4b\u503c int[] myInts = createArray(1, 2, 3, 4, 5); \/\/ \u901a\u8fc7\u6784\u9020\u51fd\u6570\u8d4b\u503c int[] [&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-65246","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65246","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=65246"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65246\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65246"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65246"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65246"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}