{"id":35434,"date":"2024-11-26T08:09:43","date_gmt":"2024-11-26T00:09:43","guid":{"rendered":"https:\/\/fwq.ai\/blog\/35434\/"},"modified":"2024-11-26T08:09:43","modified_gmt":"2024-11-26T00:09:43","slug":"java%e6%80%8e%e4%b9%88%e6%b8%85%e7%a9%ba%e5%ad%97%e7%ac%a6%e4%b8%b2%e6%95%b0%e7%bb%84%e5%85%83%e7%b4%a0","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/35434\/","title":{"rendered":"java\u600e\u4e48\u6e05\u7a7a\u5b57\u7b26\u4e32\u6570\u7ec4\u5143\u7d20"},"content":{"rendered":"<blockquote><p>\n  \u5b57\u7b26\u4e32\u6570\u7ec4\u5143\u7d20\u6e05\u7a7a\u65b9\u6cd5\uff1a\u4f7f\u7528 arrays.fill() \u65b9\u6cd5\uff0c\u5c06\u586b\u5145\u503c\u8bbe\u7f6e\u4e3a null \u6216\u7a7a\u5b57\u7b26\u4e32\uff08&#8221;&#8221;\uff09\uff0c\u4f8b\u5982\uff1aarrays.fill(myarray, null) \u6216 arrays.fill(myarray, &#8220;&#8221;)\u3002\u5176\u4ed6\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528\u5faa\u73af\u6216 system.arraycopy()\uff0c\u4f46\u6548\u7387\u8f83\u4f4e\u3002\u4f7f\u7528 arrays.fill() \u662f\u6700\u6709\u6548\u7684\u65b9\u6cd5\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/04\/2024110402515486336.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u6e05\u7a7a\u5b57\u7b26\u4e32\u6570\u7ec4\u5143\u7d20\u63d2\u56fe\" alt=\"java\u600e\u4e48\u6e05\u7a7a\u5b57\u7b26\u4e32\u6570\u7ec4\u5143\u7d20\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 Java \u4e2d\u6e05\u7a7a\u5143\u7d20<\/strong><\/p>\n<p><strong>\u6e05\u7a7a\u5b57\u7b26\u4e32\u6570\u7ec4\u5143\u7d20\u7684\u65b9\u6cd5<\/strong><\/p>\n<p>\u5728 Java \u4e2d\uff0c\u6e05\u7a7a\u5b57\u7b26\u4e32\u6570\u7ec4\u5143\u7d20\u7684\u4e3b\u8981\u65b9\u6cd5\u662f\u4f7f\u7528 Arrays.fill() \u65b9\u6cd5\u3002\u8be5\u65b9\u6cd5\u91c7\u7528\u4e24\u4e2a\u53c2\u6570\uff1a\u6570\u7ec4\u548c\u586b\u5145\u503c\u3002\u8981\u6e05\u7a7a\u6570\u7ec4\u4e2d\u7684\u5b57\u7b26\u4e32\u5143\u7d20\uff0c\u8bf7\u5c06\u586b\u5145\u503c\u8bbe\u7f6e\u4e3a null \u6216\u7a7a\u5b57\u7b26\u4e32 (&#8220;&#8221;)\u3002<\/p>\n<p><strong>\u8bed\u6cd5<\/strong><\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>Arrays.fill(array, null);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6216<\/p>\n<pre>Arrays.fill(array, \"\");<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u793a\u4f8b<\/strong><\/p>\n<pre>String[] myArray = {\"a\", \"b\", \"c\"};\n\n\/\/ \u6e05\u7a7a\u6570\u7ec4\u5143\u7d20\nArrays.fill(myArray, null);\n\n\/\/ \u6216\nArrays.fill(myArray, \"\");<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u5176\u4ed6\u65b9\u6cd5<\/strong><\/p>\n<p>\u9664\u4e86 Arrays.fill() \u65b9\u6cd5\u4e4b\u5916\uff0c\u8fd8\u6709\u5176\u4ed6\u65b9\u6cd5\u53ef\u4ee5\u6e05\u7a7a\u5b57\u7b26\u4e32\u6570\u7ec4\u5143\u7d20\uff0c\u4f46\u6548\u7387\u8f83\u4f4e\u3002<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u5faa\u73af\uff1a<\/strong><\/li>\n<\/ul>\n<pre>for (int i = 0; i &lt; myArray.length; i++) {\n    myArray[i] = null;\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6216<\/p>\n<pre>for (int i = 0; i &lt; myArray.length; i++) {\n    myArray[i] = \"\";\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<ul>\n<li><strong>\u4f7f\u7528 System.arraycopy() \u65b9\u6cd5\uff1a<\/strong><\/li>\n<\/ul>\n<pre>System.arraycopy(new String[myArray.length], 0, myArray, 0, myArray.length);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u7ed3\u8bba<\/strong><\/p>\n<p>\u4f7f\u7528 Arrays.fill() \u65b9\u6cd5\u662f\u6e05\u7a7a\u5b57\u7b26\u4e32\u6570\u7ec4\u5143\u7d20\u7684\u6700\u6709\u6548\u548c\u7b80\u4fbf\u7684\u65b9\u6cd5\u3002\u5176\u4ed6\u65b9\u6cd5\u867d\u7136\u53ef\u884c\uff0c\u4f46\u6548\u7387\u4e0d\u5982 Arrays.fill()\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u6e05\u7a7a\u5143\u7d20\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>\u5b57\u7b26\u4e32\u6570\u7ec4\u5143\u7d20\u6e05\u7a7a\u65b9\u6cd5\uff1a\u4f7f\u7528 arrays.fill() \u65b9\u6cd5\uff0c\u5c06\u586b\u5145\u503c\u8bbe\u7f6e\u4e3a null \u6216\u7a7a\u5b57\u7b26\u4e32\uff08&#8221;&#8221;\uff09\uff0c\u4f8b\u5982\uff1aarrays.fill(myarray, null) \u6216 arrays.fill(myarray, &#8220;&#8221;)\u3002\u5176\u4ed6\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528\u5faa\u73af\u6216 system.arraycopy()\uff0c\u4f46\u6548\u7387\u8f83\u4f4e\u3002\u4f7f\u7528 arrays.fill() \u662f\u6700\u6709\u6548\u7684\u65b9\u6cd5\u3002 \u5982\u4f55\u5728 Java \u4e2d\u6e05\u7a7a\u5143\u7d20 \u6e05\u7a7a\u5b57\u7b26\u4e32\u6570\u7ec4\u5143\u7d20\u7684\u65b9\u6cd5 \u5728 Java \u4e2d\uff0c\u6e05\u7a7a\u5b57\u7b26\u4e32\u6570\u7ec4\u5143\u7d20\u7684\u4e3b\u8981\u65b9\u6cd5\u662f\u4f7f\u7528 Arrays.fill() \u65b9\u6cd5\u3002\u8be5\u65b9\u6cd5\u91c7\u7528\u4e24\u4e2a\u53c2\u6570\uff1a\u6570\u7ec4\u548c\u586b\u5145\u503c\u3002\u8981\u6e05\u7a7a\u6570\u7ec4\u4e2d\u7684\u5b57\u7b26\u4e32\u5143\u7d20\uff0c\u8bf7\u5c06\u586b\u5145\u503c\u8bbe\u7f6e\u4e3a null \u6216\u7a7a\u5b57\u7b26\u4e32 (&#8220;&#8221;)\u3002 \u8bed\u6cd5 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b Arrays.fill(array, null); \u767b\u5f55\u540e\u590d\u5236 \u6216 Arrays.fill(array, &#8220;&#8221;); \u767b\u5f55\u540e\u590d\u5236 \u793a\u4f8b String[] myArray = {&#8220;a&#8221;, &#8220;b&#8221;, &#8220;c&#8221;}; \/\/ \u6e05\u7a7a\u6570\u7ec4\u5143\u7d20 Arrays.fill(myArray, null); \/\/ \u6216 Arrays.fill(myArray, &#8220;&#8221;); \u767b\u5f55\u540e\u590d\u5236 \u5176\u4ed6\u65b9\u6cd5 \u9664\u4e86 Arrays.fill() \u65b9\u6cd5\u4e4b\u5916\uff0c\u8fd8\u6709\u5176\u4ed6\u65b9\u6cd5\u53ef\u4ee5\u6e05\u7a7a\u5b57\u7b26\u4e32\u6570\u7ec4\u5143\u7d20\uff0c\u4f46\u6548\u7387\u8f83\u4f4e\u3002 \u4f7f\u7528\u5faa\u73af\uff1a for [&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-35434","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/35434","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=35434"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/35434\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=35434"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=35434"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=35434"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}