问题：
This question already has an answer here: 这个问题已经在这里有了答案：
- Clearing a string buffer/builder after loop 8 answers 循环 8回答 后清除字符串缓冲区/生成器
I'm using a StringBuilder in a loop and every x iterations I want to empty it and start with an empty StringBuilder , but I can't see any method similar to the .NET StringBuilder.Clear in the documentation, just the delete method which seems overly complicated. 我在循环中使用StringBuilder ，每隔x次迭代，我想将其清空并从一个空的StringBuilder开始，但是在文档中看不到任何类似于.NET StringBuilder.Clear的方法，只是删除方法似乎过于复杂。
So what is the best way to clean out a StringBuilder in Java? 那么用Java清理StringBuilder的最佳方法是什么？
解决方案：
参考一： https://stackoom.com/question/LmoC/如何清除或清空StringBuilder-重复参考二： https://oldbug.net/q/LmoC/How-can-I-clear-or-empty-a-StringBuilder-duplicate
来源：oschina
链接：https://my.oschina.net/u/4438370/blog/4404878