{"id":86,"date":"2021-08-26T11:41:00","date_gmt":"2021-08-26T03:41:00","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/javav2\/?p=86"},"modified":"2021-08-26T12:06:41","modified_gmt":"2021-08-26T04:06:41","slug":"java-lang-stringbuilder%e3%80%81stringbuffer","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/javav2\/post-86.html","title":{"rendered":"java.lang.StringBuilder\u3001StringBuffer"},"content":{"rendered":"\n<p>StringBuilder \u662f\u4e00\u79cd\u53ef\u4ee5\u53d8\u957f\u7684\u5b57\u7b26\u4e32\u7c7b<\/p>\n\n\n\n<p>\u5e95\u5c42\u662f\u4e00\u4e2a\u6570\u7ec4\uff0c\u4e00\u65e6\u8d85\u51fa\u957f\u5ea6\uff0c\u5c31\u4f1a\u81ea\u52a8\u91cd\u5efa\u6570\u7ec4\uff0c\u5b57\u7b26\u4e32\u4e5f\u5c31\u53d8\u957f\u4e86<\/p>\n\n\n\n<p>StringBuffer \u4e0e Stringbuilder\u00a0<strong>\u6700\u5927\u7684\u4e0d\u540c\u5c31\u662fbuffer\u7ebf\u7a0b\u5b89\u5168<\/strong>\uff0c\u5b98\u65b9\u6587\u6863\u4f20\u9001\u95e8\uff1a<\/p>\n\n\n\n<ul><li><a href=\"https:\/\/java-api.52dixiaowo.com\/libs\/jdk-6-zh\/java\/lang\/StringBuilder.html\" target=\"_blank\" rel=\"noreferrer noopener\">java.lang.StringBuilder<\/a><\/li><li><a href=\"https:\/\/java-api.52dixiaowo.com\/libs\/jdk-6-zh\/java\/lang\/StringBuffer.html\" target=\"_blank\" rel=\"noreferrer noopener\">java.lang.StringBuffer<\/a><\/li><\/ul>\n\n\n\n<p>StringBuffer\u7528\u7684\u6bd4\u8f83\u5c11\uff0c\u4e14\u7528\u6cd5\u76f8\u4f3c\uff0c\u8fd9\u91cc\u4ec5\u4ecb\u7ecdbuilder<\/p>\n\n\n\n<h5>1.\u6784\u9020\u65b9\u6cd5<\/h5>\n\n\n\n<p>\u7a7a\u53c2\u6784\u9020\u4e0e\u6709\u53c2\u6784\u9020<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>StringBuilder bu1 = new StringBuilder(); \/\/\u7a7a\u7684\u5b57\u7b26\u4e32\nStringBuilder bu2 = new StringBuilder(\"abc\"); \/\/\u5185\u5bb9\u662f\u6dfb\u52a0\u7684\u5b57\u7b26\u4e32<\/code><\/pre>\n\n\n\n<h5>2.\u65b9\u6cd5<\/h5>\n\n\n\n<p>1.\u6dfb\u52a0\u5185\u5bb9 append<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/\u53ef\u4ee5\u6dfb\u52a0\u4efb\u4f55\u7c7b\u578b\nStringBuilder sb = new StringBuilder();\nsb.append(\"abc\");\nsb.append(true);\nSystem.out.println(sb);<\/code><\/pre>\n\n\n\n<p>2.\u53cd\u8f6c<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sb.reverse();<\/code><\/pre>\n\n\n\n<p>3.\u8f6c\u6362\u4e3aString (\u5982\u679c\u53ea\u662f\u6253\u5370\uff0c\u4e0d\u9700\u8981\u8f6c\u6362\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sb.toString();<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>StringBuilder \u662f\u4e00\u79cd\u53ef\u4ee5\u53d8\u957f\u7684\u5b57\u7b26\u4e32\u7c7b \u5e95\u5c42\u662f\u4e00\u4e2a\u6570\u7ec4\uff0c\u4e00\u65e6\u8d85\u51fa\u957f\u5ea6\uff0c\u5c31\u4f1a\u81ea\u52a8\u91cd\u5efa\u6570\u7ec4\uff0c\u5b57\u7b26\u4e32\u4e5f&hellip; <a href=\"https:\/\/www.52dixiaowo.com\/javav2\/post-86.html\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">java.lang.StringBuilder\u3001StringBuffer<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[5],"tags":[],"_links":{"self":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/posts\/86"}],"collection":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/comments?post=86"}],"version-history":[{"count":1,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/posts\/86\/revisions"}],"predecessor-version":[{"id":87,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/posts\/86\/revisions\/87"}],"wp:attachment":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/media?parent=86"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/categories?post=86"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/tags?post=86"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}