October 2009
Beginner
432 pages
8h 14m
English
Content preview from Sams Teach Yourself Java™ in 24 Hours, Fifth Edition<feature><title></title>
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Chapter 20. Reading and Writing Files
WHAT YOU’LL LEARN IN THIS HOUR:
Read bytes from a file into a program
Create a new file on your computer
Save an array of bytes to a file
Make changes to the data stored in a file
There are numerous ways to represent data on a computer. You already have worked with one by creating objects. An object includes data in the form of variables and references to objects. It also includes methods that use the data to accomplish tasks.
To work with other kinds of data, such as files on your hard drive and documents on a web server, you can use the classes of the java.io package. The “io” part of its name stands for “input/output” and the classes are used to access a source of data, such ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.