{"id":36681,"date":"2024-11-26T13:51:48","date_gmt":"2024-11-26T05:51:48","guid":{"rendered":"https:\/\/fwq.ai\/blog\/36681\/"},"modified":"2024-11-26T13:51:48","modified_gmt":"2024-11-26T05:51:48","slug":"java-%e6%80%8e%e4%b9%88%e8%bf%94%e5%9b%9e%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/36681\/","title":{"rendered":"java \u600e\u4e48\u8fd4\u56de\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  \u53ef\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u8fd4\u56de java \u6570\u7ec4\uff1a\u76f4\u63a5\u8fd4\u56de\u57fa\u672c\u7c7b\u578b\u6570\u7ec4\u3002\u4f7f\u7528 object[] \u6216\u7279\u5b9a\u7c7b\u578b\u6570\u7ec4\u8fd4\u56de\u5bf9\u8c61\u6570\u7ec4\u3002\u4f7f\u7528\u901a\u914d\u7b26\u6570\u7ec4\u8fd4\u56de\u4efb\u610f\u7c7b\u578b\u6570\u7ec4\u3002\u4f7f\u7528\u6cdb\u578b\u65b9\u6cd5\u8fd4\u56de\u7279\u5b9a\u7c7b\u578b\u6570\u7ec4\u3002\u4f7f\u7528 arrays.copyof() \u8fd4\u56de\u6570\u7ec4\u526f\u672c\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/12\/2024111213481748482.jpg\" class=\"aligncenter\" title=\"java \u600e\u4e48\u8fd4\u56de\u6570\u7ec4\u63d2\u56fe\" alt=\"java \u600e\u4e48\u8fd4\u56de\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>Java \u4e2d\u5982\u4f55\u8fd4\u56de\u6570\u7ec4<\/strong><\/p>\n<p>Java \u4e2d\u8fd4\u56de\u6570\u7ec4\u7684\u65b9\u5f0f\u6709\u591a\u79cd\uff0c\u5177\u4f53\u65b9\u6cd5\u53d6\u51b3\u4e8e\u6570\u7ec4\u7684\u7c7b\u578b\u548c\u8fd4\u56de\u6570\u7ec4\u7684\u73af\u5883\u3002<\/p>\n<p><strong>1. \u4f5c\u4e3a\u65b9\u6cd5\u8fd4\u56de\u503c\u76f4\u63a5\u8fd4\u56de<\/strong><\/p>\n<p>\u5bf9\u4e8e\u57fa\u672c\u7c7b\u578b\u6570\u7ec4\uff08\u4f8b\u5982 int[]\u3001char[]\uff09\uff0c\u53ef\u4ee5\u76f4\u63a5\u5c06\u5176\u4f5c\u4e3a\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u8fd4\u56de\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>public int[] getArray() {\n    return new int[]{1, 2, 3};\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u4f5c\u4e3a\u5bf9\u8c61\u6570\u7ec4\u8fd4\u56de<\/strong><\/p>\n<p>\u5bf9\u4e8e\u5bf9\u8c61\u6570\u7ec4\uff08\u4f8b\u5982 String[]\u3001Object[]\uff09\uff0c\u53ef\u4ee5\u4f7f\u7528 Object[] \u6216\u7279\u5b9a\u7c7b\u578b\u7684\u6570\u7ec4\u4f5c\u4e3a\u8fd4\u56de\u503c\u3002<\/p>\n<pre>public Object[] getArray() {\n    return new String[]{\"a\", \"b\", \"c\"};\n}\n\npublic String[] getStringArray() {\n    return new String[]{\"a\", \"b\", \"c\"};\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u4f7f\u7528\u901a\u914d\u7b26\u6570\u7ec4\u8fd4\u56de<\/strong><\/p>\n<p>\u53ef\u4ee5\u4f7f\u7528\u901a\u914d\u7b26\u6570\u7ec4\uff08\u4f8b\u5982 T[]\uff09\u4f5c\u4e3a\u8fd4\u56de\u503c\uff0c\u5b83\u53ef\u4ee5\u8fd4\u56de\u4efb\u4f55\u7c7b\u578b\u7684\u5bf9\u8c61\u6570\u7ec4\u3002<\/p>\n<pre>public &lt;T&gt; T[] getArray() {\n    return new T[]{1, 2, 3};\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. \u4f7f\u7528\u6cdb\u578b\u65b9\u6cd5\u8fd4\u56de<\/strong><\/p>\n<p>\u5bf9\u4e8e\u8fd4\u56de\u7279\u5b9a\u7c7b\u578b\u5bf9\u8c61\u6570\u7ec4\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u4f7f\u7528\u6cdb\u578b\u65b9\u6cd5\uff0c\u5b83\u5141\u8bb8\u4ee5\u66f4\u7b80\u6d01\u7684\u65b9\u5f0f\u6307\u5b9a\u8fd4\u56de\u503c\u7c7b\u578b\u3002<\/p>\n<pre>public &lt;T&gt; T[] getArray(T[] arr) {\n    return arr;\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>5. \u4f7f\u7528 Arrays.copyOf() \u8fd4\u56de\u526f\u672c<\/strong><\/p>\n<p>\u5982\u679c\u9700\u8981\u8fd4\u56de\u6570\u7ec4\u7684\u526f\u672c\uff0c\u53ef\u4ee5\u4f7f\u7528 Arrays.copyOf() \u65b9\u6cd5\u3002<\/p>\n<pre>public int[] getArrayCopy() {\n    int[] original = {1, 2, 3};\n    return Arrays.copyOf(original, original.length);\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><\/p>\n<ul>\n<li>\u5bf9\u4e8e\u57fa\u672c\u7c7b\u578b\u6570\u7ec4\uff0c\u8fd4\u56de\u7684\u6570\u7ec4\u59cb\u7ec8\u662f\u4e00\u4e2a\u65b0\u6570\u7ec4\u3002<\/li>\n<li>\u5bf9\u4e8e\u5bf9\u8c61\u6570\u7ec4\uff0c\u8fd4\u56de\u7684\u6570\u7ec4\u53ef\u80fd\u662f\u539f\u59cb\u6570\u7ec4\u6216\u526f\u672c\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u8fd4\u56de\u6570\u7ec4\u7684\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava \u600e\u4e48\u8fd4\u56de\u6570\u7ec4\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>\u53ef\u901a\u8fc7\u4ee5\u4e0b\u65b9\u6cd5\u8fd4\u56de java \u6570\u7ec4\uff1a\u76f4\u63a5\u8fd4\u56de\u57fa\u672c\u7c7b\u578b\u6570\u7ec4\u3002\u4f7f\u7528 object[] \u6216\u7279\u5b9a\u7c7b\u578b\u6570\u7ec4\u8fd4\u56de\u5bf9\u8c61\u6570\u7ec4\u3002\u4f7f\u7528\u901a\u914d\u7b26\u6570\u7ec4\u8fd4\u56de\u4efb\u610f\u7c7b\u578b\u6570\u7ec4\u3002\u4f7f\u7528\u6cdb\u578b\u65b9\u6cd5\u8fd4\u56de\u7279\u5b9a\u7c7b\u578b\u6570\u7ec4\u3002\u4f7f\u7528 arrays.copyof() \u8fd4\u56de\u6570\u7ec4\u526f\u672c\u3002 Java \u4e2d\u5982\u4f55\u8fd4\u56de\u6570\u7ec4 Java \u4e2d\u8fd4\u56de\u6570\u7ec4\u7684\u65b9\u5f0f\u6709\u591a\u79cd\uff0c\u5177\u4f53\u65b9\u6cd5\u53d6\u51b3\u4e8e\u6570\u7ec4\u7684\u7c7b\u578b\u548c\u8fd4\u56de\u6570\u7ec4\u7684\u73af\u5883\u3002 1. \u4f5c\u4e3a\u65b9\u6cd5\u8fd4\u56de\u503c\u76f4\u63a5\u8fd4\u56de \u5bf9\u4e8e\u57fa\u672c\u7c7b\u578b\u6570\u7ec4\uff08\u4f8b\u5982 int[]\u3001char[]\uff09\uff0c\u53ef\u4ee5\u76f4\u63a5\u5c06\u5176\u4f5c\u4e3a\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u8fd4\u56de\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b public int[] getArray() { return new int[]{1, 2, 3}; } \u767b\u5f55\u540e\u590d\u5236 2. \u4f5c\u4e3a\u5bf9\u8c61\u6570\u7ec4\u8fd4\u56de \u5bf9\u4e8e\u5bf9\u8c61\u6570\u7ec4\uff08\u4f8b\u5982 String[]\u3001Object[]\uff09\uff0c\u53ef\u4ee5\u4f7f\u7528 Object[] \u6216\u7279\u5b9a\u7c7b\u578b\u7684\u6570\u7ec4\u4f5c\u4e3a\u8fd4\u56de\u503c\u3002 public Object[] getArray() { return new String[]{&#8220;a&#8221;, &#8220;b&#8221;, &#8220;c&#8221;}; } public String[] getStringArray() { return new String[]{&#8220;a&#8221;, &#8220;b&#8221;, &#8220;c&#8221;}; } \u767b\u5f55\u540e\u590d\u5236 3. [&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-36681","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36681","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=36681"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36681\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=36681"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=36681"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=36681"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}