{"id":37607,"date":"2024-11-26T16:30:03","date_gmt":"2024-11-26T08:30:03","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37607\/"},"modified":"2024-11-26T16:30:03","modified_gmt":"2024-11-26T08:30:03","slug":"java%e6%80%8e%e4%b9%88%e5%ae%9e%e7%8e%b0%e6%95%b0%e7%bb%84%e7%9a%84%e5%a4%a7%e5%b0%8f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37607\/","title":{"rendered":"java\u600e\u4e48\u5b9e\u73b0\u6570\u7ec4\u7684\u5927\u5c0f"},"content":{"rendered":"<blockquote><p>\n  \u6709\u56db\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0 java \u6570\u7ec4\u7684\u5927\u5c0f\uff1a\u76f4\u63a5\u521b\u5efa\u6570\u7ec4\uff1a\u901a\u8fc7\u6307\u5b9a\u5143\u7d20\u7c7b\u578b\u548c\u6570\u91cf\u521b\u5efa\u6570\u7ec4\u3002\u4f7f\u7528 arrays.copyof()\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u5176\u5927\u5c0f\u4e0e\u73b0\u6709\u6570\u7ec4\u76f8\u540c\u3002\u4f7f\u7528 system.arraycopy()\uff1a\u5c06\u6307\u5b9a\u8303\u56f4\u7684\u5143\u7d20\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\uff0c\u4ece\u800c\u786e\u5b9a\u5927\u5c0f\u3002\u4f7f\u7528 array.length \u5c5e\u6027\uff1a\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/13\/2024111307453013553.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u5b9e\u73b0\u6570\u7ec4\u7684\u5927\u5c0f\u63d2\u56fe\" alt=\"java\u600e\u4e48\u5b9e\u73b0\u6570\u7ec4\u7684\u5927\u5c0f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5b9e\u73b0 Java \u6570\u7ec4\u7684\u5927\u5c0f<\/strong><\/p>\n<p><strong>\u76f4\u63a5\u521b\u5efa\u6570\u7ec4<\/strong><\/p>\n<p>\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a\u6570\u7ec4\u5143\u7d20\u7684\u7c7b\u578b\u548c\u6570\u91cf\u76f4\u63a5\u521b\u5efa\u6570\u7ec4\uff1a<\/p>\n<pre>int[] myArray = new int[10]; \/\/ \u521b\u5efa\u4e00\u4e2a\u5305\u542b 10 \u4e2a\u6574\u6570\u5143\u7d20\u7684\u6570\u7ec4\nString[] myStringArray = new String[5]; \/\/ \u521b\u5efa\u4e00\u4e2a\u5305\u542b 5 \u4e2a\u5b57\u7b26\u4e32\u5143\u7d20\u7684\u6570\u7ec4<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f7f\u7528 Arrays.copyOf()<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<p>Arrays.copyOf() \u65b9\u6cd5\u53ef\u7528\u4e8e\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u5176\u5927\u5c0f\u4e0e\u73b0\u6709\u6570\u7ec4\u76f8\u540c\uff1a<\/p>\n<pre>int[] originalArray = {1, 2, 3, 4, 5};\nint[] copyArray = Arrays.copyOf(originalArray, originalArray.length);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u4f7f\u7528 System.arraycopy()<\/strong><\/p>\n<p>System.arraycopy() \u65b9\u6cd5\u53ef\u7528\u4e8e\u5c06\u6307\u5b9a\u8303\u56f4\u7684\u5143\u7d20\u4ece\u4e00\u4e2a\u6570\u7ec4\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\uff1a<\/p>\n<pre>int[] originalArray = {1, 2, 3, 4, 5};\nint[] copyArray = new int[5];\nSystem.arraycopy(originalArray, 0, copyArray, 0, 5);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u786e\u5b9a\u6570\u7ec4\u5927\u5c0f<\/strong><\/p>\n<p>\u8981\u786e\u5b9a\u6570\u7ec4\u7684\u5927\u5c0f\uff0c\u53ef\u4ee5\u4f7f\u7528 array.length \u5c5e\u6027\uff1a<\/p>\n<pre>int myArray[] = {1, 2, 3, 4, 5};\nint arrayLength = myArray.length; \/\/ 5<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u5b9e\u73b0\u6570\u7ec4\u7684\u5927\u5c0f\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>\u6709\u56db\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0 java \u6570\u7ec4\u7684\u5927\u5c0f\uff1a\u76f4\u63a5\u521b\u5efa\u6570\u7ec4\uff1a\u901a\u8fc7\u6307\u5b9a\u5143\u7d20\u7c7b\u578b\u548c\u6570\u91cf\u521b\u5efa\u6570\u7ec4\u3002\u4f7f\u7528 arrays.copyof()\uff1a\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u5176\u5927\u5c0f\u4e0e\u73b0\u6709\u6570\u7ec4\u76f8\u540c\u3002\u4f7f\u7528 system.arraycopy()\uff1a\u5c06\u6307\u5b9a\u8303\u56f4\u7684\u5143\u7d20\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\uff0c\u4ece\u800c\u786e\u5b9a\u5927\u5c0f\u3002\u4f7f\u7528 array.length \u5c5e\u6027\uff1a\u83b7\u53d6\u6570\u7ec4\u7684\u957f\u5ea6\u3002 \u5982\u4f55\u5b9e\u73b0 Java \u6570\u7ec4\u7684\u5927\u5c0f \u76f4\u63a5\u521b\u5efa\u6570\u7ec4 \u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a\u6570\u7ec4\u5143\u7d20\u7684\u7c7b\u578b\u548c\u6570\u91cf\u76f4\u63a5\u521b\u5efa\u6570\u7ec4\uff1a int[] myArray = new int[10]; \/\/ \u521b\u5efa\u4e00\u4e2a\u5305\u542b 10 \u4e2a\u6574\u6570\u5143\u7d20\u7684\u6570\u7ec4 String[] myStringArray = new String[5]; \/\/ \u521b\u5efa\u4e00\u4e2a\u5305\u542b 5 \u4e2a\u5b57\u7b26\u4e32\u5143\u7d20\u7684\u6570\u7ec4 \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528 Arrays.copyOf() \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b Arrays.copyOf() \u65b9\u6cd5\u53ef\u7528\u4e8e\u521b\u5efa\u65b0\u6570\u7ec4\uff0c\u5176\u5927\u5c0f\u4e0e\u73b0\u6709\u6570\u7ec4\u76f8\u540c\uff1a int[] originalArray = {1, 2, 3, 4, 5}; int[] copyArray = Arrays.copyOf(originalArray, originalArray.length); \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528 System.arraycopy() System.arraycopy() \u65b9\u6cd5\u53ef\u7528\u4e8e\u5c06\u6307\u5b9a\u8303\u56f4\u7684\u5143\u7d20\u4ece\u4e00\u4e2a\u6570\u7ec4\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\uff1a 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-37607","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37607","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=37607"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37607\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37607"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37607"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37607"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}