What are FileInputStream and FileOutputStream

FileInputStream : It contains the input byte from a file and implements an input stream.
FileOutputStream : It uses for writing data to a file and also implements an output stream.

FileInputStream, FileOutputStream

byte[] bucket = new Byte[16];
x = is.read(bucket);
os.write(bucket, 0, x);

close close

public class FileHandling { public static void main(String [ ] args) throws IOException { FileInputStream inputStream = new FileInputStream ("Input.txt") ; FileOutputStream outputStream = new FileOutputStream("Output.txt",true) ; byte[] buffer = new byte[1024]; //For larger files we specify a buffer size which defines the chunks size for data int bytesRead; while ((bytesRead = inputStream.read(buffer)) != -1) outputStream.write(buffer, 0, bytesRead); inputStream.close() ; outputStream.close() ; } }