{"id":10008313,"date":"2023-09-22T16:29:30","date_gmt":"2023-09-22T08:29:30","guid":{"rendered":"https:\/\/blog.itmax.cn\/?p=10008313"},"modified":"2023-09-22T16:29:30","modified_gmt":"2023-09-22T08:29:30","slug":"java-21%e7%9a%84stringbuilder%e5%92%8cstringbuffer%e6%96%b0%e5%a2%9e%e4%ba%86%e4%b8%80%e4%b8%aarepeat%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10008313","title":{"rendered":"Java 21\u7684StringBuilder\u548cStringBuffer\u65b0\u589e\u4e86\u4e00\u4e2arepeat\u65b9\u6cd5"},"content":{"rendered":"<p>\u53d1\u73b0Java 21\u7684<code>StringBuilder<\/code>\u548c<code>StringBuffer<\/code>\u4e2d\u591a\u4e86repeat\u65b9\u6cd5\uff1a<\/p>\n<pre><code class=\"java\">    \/**\n     * @throws IllegalArgumentException {@inheritDoc}\n     *\n     * @since 21\n     *\/\n    @Override\n    public StringBuilder repeat(int codePoint, int count) {\n        super.repeat(codePoint, count);\n        return this;\n    }\n\n    \/**\n     * @throws IllegalArgumentException {@inheritDoc}\n     *\n     * @since 21\n     *\/\n    @Override\n    public StringBuilder repeat(CharSequence cs, int count) {\n        super.repeat(cs, count);\n        return this;\n    }<\/code><\/pre>\n<p>\u6839\u636e\u540d\u5b57\u731c\u731c\u662f\u5e72\u561b\u7684\uff1f\u8bd5\u8bd5\u4e0b\u9762\u7684\u4ee3\u7801\uff1a<\/p>\n<pre><code class=\"java\">var sb = new StringBuilder().repeat(&quot;*&quot;, 10);\nSystem.out.println(sb);<\/code><\/pre>\n<p>\u6700\u540e\u4f1a\u8f93\u51fa\uff1a<\/p>\n<pre><code class=\"java\">**********<\/code><\/pre>\n<blockquote><p>\u53e6\u4e00\u4e2a<code>repeat<\/code>\u65b9\u6cd5\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f<code>codePoint<\/code>\uff0c\u6307\u5f97\u5e94\u8be5\u662fUniCode\u5b57\u7b26\u96c6\u4e2d\u7684codePoint\uff0c\u6240\u4ee5\u8fd9\u4e2a\u65b9\u6cd5\u7684repeat\u662f\u9488\u5bf9UniCode\u5b57\u7b26\u7684\u3002<\/p><\/blockquote>\n<p>\u4e00\u65f6\u95f4\u4f3c\u4e4e\u60f3\u4e0d\u5230\u4ec0\u4e48\u7279\u522b\u5927\u7684\u7528\u6237\uff0c\u5c31\u60f3\u5230\u53ef\u4ee5\u7528\u6765\u5feb\u6377\u7684\u6784\u5efa\u4e00\u4e9b\u6587\u672c\u7c7b\u7684\u5206\u9694\u7b26\uff1f\u4f60\u89c9\u5f97\u8fd8\u6709\u5176\u4ed6\u4ec0\u4e48\u5999\u7528\u5417\uff1f\u4e00\u8d77\u804a\u804a~ \u5982\u679c\u60a8\u5b66\u4e60\u8fc7\u7a0b\u4e2d\u5982\u9047\u56f0\u96be\uff1f\u53ef\u4ee5\u52a0\u5165\u6211\u4eec\u8d85\u9ad8\u8d28\u91cf\u7684<a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=D93kC7fMeLPiKcdF245Uqg%3D%3D.qEpphOZUDtL9QsufujFx1OKxKK0%2BnyZ2CmSs4zJEGh%2BDAgFl%2Bi7hFDK8OQeaWvv9\" rel=\"noopener noreferrer\">\u6280\u672f\u4ea4\u6d41\u7fa4<\/a>\uff0c\u53c2\u4e0e\u4ea4\u6d41\u4e0e\u8ba8\u8bba\uff0c\u66f4\u597d\u7684\u5b66\u4e60\u4e0e\u8fdb\u6b65\uff01\u53e6\u5916\uff0c\u4e0d\u8981\u8d70\u5f00\uff0c\u5173\u6ce8\u6211\uff01\u6301\u7eed\u66f4\u65b0<a target=\"_blank\" href=\"https:\/\/link.segmentfault.com\/?enc=w07whFpymf3jq6dxH0ZWtA%3D%3D.oOX3dDtekQyJ1R4Ea%2FVhTeni9espfRjBi%2FxBWLpuVMz3CmlPsbob97CkmyNVSzXuX9Zp8oPyfZJJ3DLM6842JCUTLDcVkD8pvoFu04wlobM%3D\" rel=\"noopener noreferrer\">Java\u65b0\u7279\u6027\u4e13\u680f<\/a>\uff01<\/p>\n<blockquote><p>\u6b22\u8fce\u5173\u6ce8\u6211\u7684\u516c\u4f17\u53f7\uff1a\u7a0b\u5e8f\u733fDD\u3002\u7b2c\u4e00\u65f6\u95f4\u4e86\u89e3\u524d\u6cbf\u884c\u4e1a\u6d88\u606f\u3001\u5206\u4eab\u6df1\u5ea6\u6280\u672f\u5e72\u8d27\u3001\u83b7\u53d6\u4f18\u8d28\u5b66\u4e60\u8d44\u6e90<\/p><\/blockquote>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000044248848\">https:\/\/segmentfault.com\/a\/1190000044248848<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u53d1\u73b0Java 21\u7684StringBuilder\u548cStringBuffer\u4e2d\u591a\u4e86repeat\u65b9\u6cd5\uff1a \/** *  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-10008313","post","type-post","status-publish","format-standard","hentry","category-share"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10008313","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10008313"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10008313\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10008313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10008313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10008313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}