java - Java中如何从某个偏移量处读取文件？

Question

嘿，我正在尝试打开一个文件并仅从偏移量读取特定长度!我读过这个主题: How to read a specific line using the specific line number from a file in Java?在那里它说不可能在不读取之前的行的情况下读取某一行，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.