Example code for the book "Thinking in Java, 4th Edition"
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Note that this book covers Java 5/6. The recent book On Java 8 covers Java 8.
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Download the code by pressing the green button you see towards the top if this page. After pressing the button, select "Download Zip."
Create a directory in which to install the code. For these instructions, we'll refer to this directory as
Using Winzip or some other zip utility, extract the zip file into the
C:\TIJ4\codedirectory. When you're done, you should see several levels of directories, and in the
C:\TIJ4\codedirectory, you'll see, among other things, subdirectories corresponding to the chapters in the book.
Install the Java JDK SE5 or later from the download site at Sun. You'll also eventually want the documentation, which is available further down on that page. You may also choose to install Java SE6; the code will work with that as well. Note that the most reliable approach is to install to the default directories.
bindirectory of your JDK to your path.
Set the CLASSPATH in your computer's environment. For Windows machines, right-click on the "My Computer" icon and select "Properties." Then select the "Advanced" tab and click the "Environment Variables" button at the bottom. Under "System Variables," look to see if there's already a "CLASSPATH" variable. If there is, double click and add
;.;..;C:\TIJ4\code;to the end of the current entry. If there is no "CLASSPATH" variable, click the "New" button and enter
CLASSPATHIn the "Variable name" box, and
.;..;C:\TIJ4\code;In the "Variable value" box, then click "OK". To verify that your classpath has been set, start a command prompt (see below), then enter
setand look for the
CLASSPATHinformation in the output.
Antbuild tool by following the instructions you will find in the Ant download. Note:
Antis not required in order to compile the examples in the book. It is used to automate the process, but you can also compile each example individually (once you have the CLASSPATH set, as described above) using the
javaccommand-line compiler that was installed when you completed the previous step (note that you may have to set the Windows PATH to point to
javac.exe). To compile a file called
MyProgram.java, you type
Start a command prompt in the
C:\TIJ4\codedirectory. To do this in Windows, press the "Start" button, then select "Run" and type "cmd" and press "OK." then type
cd C:\TIJ4\codeinto the resulting command window.
At this point you should be able to start a command prompt in
ant build, and the build should successfully compile all the chapters up to the
iochapter, where it will fail with an error message about a missing library. If you only need to work with chapters before
iofor now, this will suffice for awhile.
You can also move into individual chapters and type
ant(to compile and execute the code in that chapter) or
ant build(to compile the code only).
To build the entire code base, you'll need to install the additional libraries. These include:
javaws.jarlibrary, which comes with the standard Java installation, but which you must explicitly place in your classpath (described below).
In general, you can install the above Jar files by placing them in the
jre/lib/extdirectory that is part of the "Java Runtime" that will be set up when you install the Java SE5 or Java SE6 development kit. You may have to hunt around for the JRE, but it can often be found under your "Program Files" directory, under "Java."
Alternatively, you can explicitly install each of the Jar files. To do this, you must add each one to your CLASSPATH, following the directions shown earlier on this page. However, you must also include the name of the Jar file in the CLASSPATH entry. For example, if you put the
xom.jarfile in a directory called
C:\TIJ4\libraries\, then the associated CLASSPATH entry would be
This code is designed to work outside of IDEs. Because packages are not introduced until later chapters, and some of the fancier IDEs like Eclipse require all code to be in packages, if you want to use the code inside those IDEs you will have to make some adjustments (however, see the
Eclipse.pyprogram in the download package for some help). Different IDEs have different requirements and it may be more trouble than it's worth while you're getting started; instead, you may want to begin with a more basic editor like JEdit.