September 2005
Beginner
576 pages
13h 6m
English
Content preview from SAMS Teach Yourself Programming with Java™ in 24 Hours, FOURTH EDITIONBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Hour 20. Reading and Writing Files
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 as a hard drive, CD-ROM, or the computer's memory.
You can bring data into a program and send data out by using a communications system called streams, or objects that take information from one place to another. ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.