Introduction


This chapter describes how your Java program can deal with its immediate surroundings, with what we call the runtime environment . In one sense, everything you do in a Java program using almost any Java API involves the environment. Here we focus more narrowly on things that directly surround your program. Along the way we'll meet the System class, which knows a lot about your particular system.

Two other runtime classes deserve brief mention. The first, java.lang.Runtime , lies behind many of the methods in the System class. System.exit( ) , for example, just calls Runtime.exit( ) . It is technically part of "the environment," but the only time we use it directly is to run other programs, which is covered in Recipe 26.1. The java.awt.Toolkit object is also part of the environment and is discussed in Chapter 13.



Java Cookbook
Java Cookbook, Second Edition
ISBN: 0596007019
EAN: 2147483647
Year: 2003
Pages: 409
Authors: Ian F Darwin

Similar book on Amazon

flylib.com © 2008-2017.
If you may any questions please contact us: flylib@qtcs.net