你如何在 Java 中“清空”一个 StringWriter？
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How do you "empty" a StringWriter in Java?
提问by Derek Mahar
What is the correct way to "empty" a StringWriterin Java so that I can reuse the StringWriterwithout having to create a new one? Neither StringWriter.flush()nor StringWriter.close()seem to have the desired effect.
StringWriter在 Java 中“清空” a以便我可以重用它StringWriter而不必创建新的正确方法是什么？无论是StringWriter.flush()也StringWriter.close()似乎收到预期的效果。
回答by Jon Skeet
How about calling getBuffer().setLength(0)?
打电话getBuffer().setLength(0)怎么样？
回答by Exception_al
Alternatively, we could also delete the buffer using the following code:
或者，我们也可以使用以下代码删除缓冲区：
StringBuffer buf = ****.getBuffer();
buf.delete(0,buf.length());
