When using RandomAccessFile and Multi Thread, How do I split big char file?

Question

I have to read a big char file.Then I have found RandomAccessFile which meets my need. I have a try, then faced with a question that how to get the point that every thread starts with.

The RandomAccessFile API read file by byte, but the file is charset and I need to process every line.so How do I spilt it by line ?

thanks help.

Can not do this with NIO.

Answer 1

I have to read a big char file.

So you should be using FileReader , probably wrapped in a BufferedReader .

However reading a file with multiple threads won't buy you anything. The disk isn't multi-threaded.

And you can't read lines in parallel. It doesn't even make sense,