Using buffered streams

Using unbuffered I/O like FileReader can be inefficient because the read requests are handled directly by the operating system.

* directly by the operating system 운영 체제에서 직접, inefficient 비효율적

 

Using buffered streams can make a program more efficient. Data is written to or read from a buffer, and the native API is only called when the buffer is full. This reduces the number of necessary expensive operations like disk accecss or network activity.

 

A buffered stream an be created by passing an unbuggered stream object to a buffered stream constructor. For example:

 

input = new BufferedReader(new FileReader("in.txt"));

output = new BufferedWriter(new FileWriter("out.txt"));