java - What is the byte array size in this code? Can I make it more generic?

Question

I read a tutorial 'Read file in String with BufferedInputStream', and I got a code from here:

The question is this line: // byte array to store input byte[] contents = new byte[1024];

So, how can I ensure it is 1024 byte? If I have a data with 1025 byte, and my code will break. So, how can I make it more generic? Thanks.

score 1 · Accepted Answer

在您引用的代码中，数组通过调用填充

byte[] contents = new byte[1024];
int bytesRead=0;
bytesRead = bin.read(contents));

bin.read 将查看内容的大小并从流中读取最多 1024 个字节。

score 0 · Accepted Answer

不，它不会破裂。

魔法就在这里

while ((bytesRead = bin.read(contents)) != -1) {

bin.read(contents))它将bytes从中读取下一组file。

2 回答 2