Java in a Nutshell, 5th Edition [Electronic resources]

This class applies buffering to a character output stream, improving output efficiency by coalescing many small write requests into a single larger request. You create a BufferedWriter by specifying some other character output stream to which it sends its buffered and coalesced output. (You can also specify a buffer size at this time, although the default size is usually satisfactory.) Typically, you use this sort of buffering with a FileWriter or OutputStreamWriter. BufferedWriter defines the standard write( ), flush( ), and close( ) methods all output streams define, but it adds a newLine( ) method that outputs the platform-dependent line separator (usually a newline character, a carriage-return character, or both) to the stream. BufferedWriter is the character-stream analog of BufferedOutputStream.

public class 
BufferedWriter  extends Writer {
// Public Constructors
public 
BufferedWriter (Writer 
out );  
public 
BufferedWriter (Writer 
out , int 
sz );  
// Public Instance Methods
public void 
newLine ( ) throws IOException;  
// Public Methods Overriding Writer
public void 
close ( ) throws IOException;  
public void 
flush ( ) throws IOException;  
public void 
write (int 
c ) throws IOException;  
public void 
write (char[ ] 
cbuf , int 
off , int 
len ) throws IOException;  
public void 
write (String 
s , int 
off , int 
len ) throws IOException;  
}