Ivor Horton's Beginning Java™ 2, JDK™ 5th Edition

Chapter 10. Writing Files

In this chapter, you'll be looking at ways in which basic data can be written to a file using the new file input/output capability that was introduced in the 1.4 release of the JDK and that continues in JDK 5.0. This mechanism for file I/O largely superseded the read/write capability provided by readers and writers from the java.io package when applied to file streams. Since the new file I/O does everything that the old capability does, and does it better, I'll focus just on that.

In this chapter you'll learn:

• The principles of reading and writing files using the new I/O capability

• How you obtain a file channel for a file

• How you create a buffer and load it with data

• What view buffers are and how you use them

• How you use a channel object to write the contents of a buffer to a file