Sams Teach Yourself Java™ in 24 Hours, Sixth Edition

Writing Data to a Stream

In the java.io package, the classes for working with streams come in matched sets. There are FileInputStream and FileOutputStreams classes for working with byte streams, FileReader and FileWriter classes for working with character streams, and many other sets for working with other kinds of stream data.

To begin writing data, you first create a File object that is associated with an output stream. This file doesn’t have to exist on your system.

You can create a FileOutputStream in two ways. If you want to append bytes onto an existing file, call the FileOutputStream() constructor method with two arguments: a File object representing the file and the boolean of true. The bytes you write to the stream are tacked onto the ...