ByteArrayOutputStream容量限制 [英] ByteArrayOutputStream capacity restriction

问题描述

我创建 ByteArrayOutputStream barr = new ByteArrayOutputStream（1）; ，即容量为1字节，并向其写入1个字节以上 barr.write （ 123456789000000 .getBytes（））; 。没有错误发生，我检查了 barr 的长度是15。为什么我的文字没有被阻止或包裹？有没有一种方法可以防止写超出容量的内容，并且可以使用哪个 outputstream ？
我的可用内存非常有限，不想超出我的限制定义

I create ByteArrayOutputStream barr = new ByteArrayOutputStream(1);, i.e. with capacity 1 bytes and write to it more than 1 byte barr.write("123456789000000".getBytes());. No error occurs, I check the length of barr it is 15. Why my writing was not blocked or wrapped? Is there a way to prevent of writing more than capacity and which outputstream could be used for that? I am very limited in available memory and don`t want to write there more than my limitations define

PS
非常感谢您的回答！我已经跟进了问题
如果您愿意可能看起来

P.S. Thanks a lot for the answers! I had a following up question It could be great if you could look

推荐答案

这是因为您指定给构造函数的容量为初始大小缓冲区。如果您写入更多数据，缓冲区将自动以更大的大小重新分配，以容纳更多数据。

That is because the capacity that you specify to the constructor is the initial size of the buffer. If you write more data, the buffer will be automatically re-allocated with a larger size, to fit more data.

据我所知， ByteArrayOutputStream 限制缓冲区的增长。您可以改用其他东西，例如 java.nio.ByteBuffer ，它的大小是固定的。

As far as I know, there is no way with ByteArrayOutputStream to limit the growth of the buffer. You could use something else instead, for example a java.nio.ByteBuffer, which has a fixed size.

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