This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
ByteBuffer class uses channels like "FileChannel" to read data from files.
Have you seen methods available ByteBuffer and FileChannel classes?
I think there is no readLine() method available.
But you can do similar by allocating a buffer size and than setting initial offset and capacity
also you can extract the specific part of data from buffer using utilities like subString,indexOf.