java - 如何从Java中的某个偏移量读取文件？

Question

嘿，我正在尝试打开一个文件并仅从偏移量读取一定长度!我读了这个话题: How to read a specific line using the specific line number from a file in Java?在那里它说如果不读之前的行就不可能读到某一行，但我想知道字节!

FileReader location = new FileReader(file);
BufferedReader inputFile = new BufferedReader(location);
// Read from bytes 1000 to 2000
// Something like this
inputFile.read(1000,2000);

是否可以从已知偏移量读取某些字节？

Answer 1

RandomAccessFile公开一个函数:

seek(long pos) 
          Sets the file-pointer offset, measured from the beginning of this file, at which the next read or write occurs.