如何在java中编写缓冲行？

Question

In C you can set the buffering using the function

int setvbuf (FILE *stream, char *buf, int mode, size_t size);

How can I set the buffering in Java so that is behaves the same as _IOLBF (for line buffering)? Which class does this?

I know that there is BufferedWriter, but this does full buffering.

Answer 1

You can use PrintWriter with autoflush.

PrintWriter pw = new PrintWriter(out, /* autoflush */ true);

pw.println(somethingToPrint); // will flush as well.

This is not exactly the same as it will push out data whenever the buffer files (esp for very long lines) and it won't flush if you write text with newlines in it but use print() to print the line.