Appends the specified string to this writer.
Optionalstart: numberStart of substring in str to write
Optionalend: numberEnd of substring in str to write
Closes the stream, flushing it first.
Flushes the stream.
Writes a line separator.
Writes an array, or portion thereof, of characters.
Optionaloff: numberOffset from which to start writing characters
Optionallen: numberNumber of characters to write
Writes text to a character-output stream, buffering characters so as to provide for the efficient writing of single characters, arrays, and strings.
See java.io.BufferedWriter for full documentation