{"id":65321,"date":"2025-05-03T16:02:38","date_gmt":"2025-05-03T08:02:38","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65321\/"},"modified":"2025-05-03T16:02:38","modified_gmt":"2025-05-03T08:02:38","slug":"java%e6%80%8e%e4%b9%88%e6%b8%85%e7%90%86char%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65321\/","title":{"rendered":"java\u600e\u4e48\u6e05\u7406char\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  java \u4e2d\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u6e05\u7406 char \u6570\u7ec4\uff1a\u4f7f\u7528 arrays.fill() \u65b9\u6cd5\uff0c\u5c06\u6570\u7ec4\u5143\u7d20\u8bbe\u7f6e\u4e3a &#8216;u0000&#8217;\uff08\u7a7a\u5b57\u7b26\uff09\u3002\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0cjava \u4f1a\u81ea\u52a8\u5c06\u5176\u5143\u7d20\u521d\u59cb\u5316\u4e3a\u9ed8\u8ba4\u503c &#8216;u0000&#8217;\u3002\u4f7f\u7528 system.arraycopy() \u65b9\u6cd5\uff0c\u5c06\u4e00\u4e2a\u586b\u5145 &#8216;u0000&#8217; \u7684\u6570\u7ec4\u590d\u5236\u5230\u76ee\u6807\u6570\u7ec4\u3002\u4f7f\u7528 for \u5faa\u73af\u624b\u52a8\u5730\u5c06\u6bcf\u4e2a\u5143\u7d20\u8bbe\u7f6e\u4e3a &#8216;u0000&#8217;\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/12\/2024111220244742412.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u6e05\u7406char\u6570\u7ec4\u63d2\u56fe\" alt=\"java\u600e\u4e48\u6e05\u7406char\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u6e05\u7406 Java \u4e2d\u7684 char \u6570\u7ec4<\/strong><\/p>\n<p>\u5728 Java \u4e2d\u6e05\u7406 char \u6570\u7ec4\u6709\u591a\u79cd\u65b9\u6cd5\uff1a<\/p>\n<p><strong>1. \u4f7f\u7528 Arrays.fill() \u65b9\u6cd5<\/strong><\/p>\n<p>Arrays.fill() \u65b9\u6cd5\u5c06\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\u8bbe\u7f6e\u4e3a\u6307\u5b9a\u503c\u3002\u5bf9\u4e8e char \u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528 &#8216;u0000&#8217; \u5b57\u7b26\uff08\u7a7a\u5b57\u7b26\uff09\u5bf9\u5176\u8fdb\u884c\u6e05\u9664\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>char[] array = {'a', 'b', 'c'};\nArrays.fill(array, 'u0000');<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4<\/strong><\/p>\n<p>\u521b\u5efa\u65b0\u6570\u7ec4\u65f6\uff0cJava \u4f1a\u81ea\u52a8\u5c06\u5176\u6240\u6709\u5143\u7d20\u521d\u59cb\u5316\u4e3a\u9ed8\u8ba4\u503c\u3002\u5bf9\u4e8e char \u6570\u7ec4\uff0c\u9ed8\u8ba4\u503c\u4e3a &#8216;u0000&#8217;\u3002<\/p>\n<pre>char[] array = new char[oldArray.length];<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u4f7f\u7528 System.arraycopy() \u65b9\u6cd5<\/strong><\/p>\n<p>System.arraycopy() \u65b9\u6cd5\u53ef\u7528\u4e8e\u5c06\u6570\u7ec4\u7684\u6307\u5b9a\u90e8\u5206\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u6570\u7ec4\u4e2d\u3002\u6e05\u9664 char \u6570\u7ec4\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e2a\u586b\u5145 &#8216;u0000&#8217; \u7684\u6570\u7ec4\u4f5c\u4e3a\u76ee\u6807\u3002<\/p>\n<pre>char[] cleanArray = new char[oldArray.length];\nSystem.arraycopy(cleanArray, 0, oldArray, 0, oldArray.length);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. \u4f7f\u7528 for \u5faa\u73af<\/strong><\/p>\n<p>\u4e5f\u53ef\u4ee5\u4f7f\u7528 for \u5faa\u73af\u624b\u52a8\u5730\u5c06\u6bcf\u4e2a\u5143\u7d20\u8bbe\u7f6e\u4e3a &#8216;u0000&#8217;\u3002\u867d\u7136\u6b64\u65b9\u6cd5\u6548\u7387\u8f83\u4f4e\uff0c\u4f46\u5bf9\u4e8e\u5c0f\u6570\u7ec4\u6765\u8bf4\u53ef\u80fd\u662f\u53ef\u884c\u7684\u3002<\/p>\n<pre>for (int i = 0; i &lt; oldArray.length; i++) {\n    oldArray[i] = 'u0000';\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u6e05\u7406char\u6570\u7ec4\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 \u4e2d\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u6e05\u7406 char \u6570\u7ec4\uff1a\u4f7f\u7528 arrays.fill() \u65b9\u6cd5\uff0c\u5c06\u6570\u7ec4\u5143\u7d20\u8bbe\u7f6e\u4e3a &#8216;u0000&#8217;\uff08\u7a7a\u5b57\u7b26\uff09\u3002\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0cjava \u4f1a\u81ea\u52a8\u5c06\u5176\u5143\u7d20\u521d\u59cb\u5316\u4e3a\u9ed8\u8ba4\u503c &#8216;u0000&#8217;\u3002\u4f7f\u7528 system.arraycopy() \u65b9\u6cd5\uff0c\u5c06\u4e00\u4e2a\u586b\u5145 &#8216;u0000&#8217; \u7684\u6570\u7ec4\u590d\u5236\u5230\u76ee\u6807\u6570\u7ec4\u3002\u4f7f\u7528 for \u5faa\u73af\u624b\u52a8\u5730\u5c06\u6bcf\u4e2a\u5143\u7d20\u8bbe\u7f6e\u4e3a &#8216;u0000&#8217;\u3002 \u5982\u4f55\u6e05\u7406 Java \u4e2d\u7684 char \u6570\u7ec4 \u5728 Java \u4e2d\u6e05\u7406 char \u6570\u7ec4\u6709\u591a\u79cd\u65b9\u6cd5\uff1a 1. \u4f7f\u7528 Arrays.fill() \u65b9\u6cd5 Arrays.fill() \u65b9\u6cd5\u5c06\u6570\u7ec4\u7684\u6240\u6709\u5143\u7d20\u8bbe\u7f6e\u4e3a\u6307\u5b9a\u503c\u3002\u5bf9\u4e8e char \u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528 &#8216;u0000&#8217; \u5b57\u7b26\uff08\u7a7a\u5b57\u7b26\uff09\u5bf9\u5176\u8fdb\u884c\u6e05\u9664\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b char[] array = {&#8216;a&#8217;, &#8216;b&#8217;, &#8216;c&#8217;}; Arrays.fill(array, &#8216;u0000&#8242;); \u767b\u5f55\u540e\u590d\u5236 2. \u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4 \u521b\u5efa\u65b0\u6570\u7ec4\u65f6\uff0cJava \u4f1a\u81ea\u52a8\u5c06\u5176\u6240\u6709\u5143\u7d20\u521d\u59cb\u5316\u4e3a\u9ed8\u8ba4\u503c\u3002\u5bf9\u4e8e char \u6570\u7ec4\uff0c\u9ed8\u8ba4\u503c\u4e3a &#8216;u0000&#8217;\u3002 char[] array [&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-65321","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65321","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=65321"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65321\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65321"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65321"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65321"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}