For this project you will install and then explore Eclipse and NetBeans Java IDEs. In either case you will need to have installed the JDK too, which in turn includes a JRE.
In addition, you will learn and explore using the non-GUI tool Maven.
Complete directions for installing all software as used in the classroom can be found in the course resources, in the Java Setup link. What follows are the brief directions for setting up just the two IDEs.
Eclipse is easy to install on a Windows platform.
You download the “zip” file for Eclipse (the 32-bit
version is recommended for our class), and extract
the contents into “
(for the 64-bit version), or
C:\Program Files (x86)”
(for the 32-bit version).
This creates a new sub-directory “
Open that folder and right-click on the file
Next, right-click on the “
button and click on “
Next open the “
Finally, right-click in this window and choose
(You can add additional short-cuts to your desktop or the
quick launch bar, if desired.)
Eclipse is now installed and ready to use. Before getting started, it is a good idea to go to the “Help” menu and select “Check for Updates”.
My Documents\Eclipse-workspace” or “
C:\Temp\Eclipse-workspace”, depending on if the computer is single user or multi-user. (You can click the button to make Eclipse remember your choice.)
You can also read the Eclipse Documentation online, especially the Workbench User Guide and the Java Development User Guide.
Additionally, you can read this tutorial which I found to be well-written: www.vogella.de/articles/Eclipse/article.html.
jarfiles placed into the Eclipse install directory. There are hundreds available to extend Eclipse with additional functionality, such as XML editors,
Junittest case editors, UML GUI drawing tools (that generate Java code for you), and Java EE tools.
A collection of these projects useful for Java and Java EE development has been bundled together under the name Mars, which is what you have installed (the current version of Eclipse). To install other Eclipse plug-ins:
Install New Software...”. Now tell Eclipse where to look for the new plug-ins. You should select “The Eclipse Project Updates - URL”, but to add some third party plug-in you need to add their site to the list, by clicking on the “Add...” button. Then you can select that site. You can also pick “Mars” (the current Eclipse release name at the time of this writing) to install additional projects not included with your installer bundle.
Install...button. For example, try adding the two UML2 projects (under “modeling” in the Galileo release site), and click “Next”. This shows a summary of all the items that will be installed based on your choices. Click “Next” show the license screen; be sure to select the “I agree ...” button, then click on the “Finish” button to start the install.
Feel free to explore other available plug-ins. Even more plug-ins can be found at marketplace.eclipse.org. (Warning: You should learn the basic Eclipse platform first, because adding plug-ins complicates the user interface.)
Hello. (Be sure to check the “Generate comments” checkbox.) You should see a new file “
Hello.java” in the Package Explorer window. Right-click on it and chose open, and create another hello world (or other simple) application. Your application should not be identical with the tutorial; make yours say something such as “Hello from the world of Eclipse!”. Don't forget to add appropriate comments (and to delete or modify the pointless comments that Eclipse inserts automatically for you).
Note the Eclipse won't automatically put your classes in packages. That is fine for this project, but generally it is best to use packages. You can name your package after the project name.
You might want to read about Git, Maven, or other topics; examine the links for any guides/tutorials that seem interesting. (You won't have time to read them all now, but you should attempt to read some of them over time to improve your skills.)
Give your project a useful name (e.g., “
and pick a name for the class that will be generated
Note the NetBeans automatically puts your classes in a
package named after the project.
That is fine, but for this simple project, you could put your class in the
default, nameless package.
Leave “Set as Main Project” selected, and click
Read the Maven in 5 Minutes tutorial.
C:\Java\(used in the directions that follow), but anyplace you wish is fine.
apache-maven-versionto something simpler, such as
(As a reminder:
PATH is used by your system to locate executables
CLASSPATH is used
by Java to locate packages and some other things;
used by various programs (including Maven) to locate a JDK; and
M2_HOME (previously known as
MAVEN_HOME) is used by
mvn to locate various configuration files.
All of these may be used by other programs to locate files they need.
While some programs are smart enough to guess to try default install locations
when you don't set these variables, that won't work if you don't install
in the default locations.)
There are several ways do to this. One is to follow the standard install directions for a Linux-like system, found on the Maven website. The simplest way seems to be this:
brewcommand to install things.
brew install maven.
treecommand, you can install that using the command
brew install tree.
cdinto it. Next, create a working “Hello, World” project named “
hello” using the command (one long line):
mvn archetype:generate -DgroupId=cop2805 -DartifactId=hello -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false
That might take a while the first time.
When done, see what files were created by using the
tree/F hello command
tree on Mac or Linux).
cd into your new
Take a look at the generated source code at
src/main/java/cop2805/App.java, the generated unit test at
src/main/java/cop2805/App.java, and the generated
(When using Maven “for real”, you would edit the POM file and
edit or replace the
Next, compile, test, package, and install your project (into your
This is done with the simple command:
tree) command to see the new
(Also look in your home directory and use
tree on the
.m2 directory there.)
Notice the JAR file; that is the resulting application.
To run this Jar file, enter the command (without changing directories first):
java -cp target\hello-1.0-SNAPSHOT.jar cop2805.App
Finally, there are a couple of other Maven commands to play with:
mvn site” to generate a website for
You can view the site in your web browser by opening the file
Convert your Maven project to an Eclipse-Maven project:
If you copy this project (the whole folder) into your Eclipse workspace
directory, it should just work.
Now try to convert your “Hello, world” projects from the two IDEs into Maven projects. Notice how the layout of folders is now different from the default for your IDEs.
A copy of your Java source code from the “Hello World” programs you created in parts I, II, and III, and the answers to the questions asked in part IV.
When copying from Eclipse, copied code loses all formatting if any of the code is “folded” (hidden with a plus sign where the missing lines are). To avoid losing formatting when copying, first right click on the line numbers and select Folding → Expand All. Now when you copy, all formatting should still be there when you paste! (To prevent folding altogether, go to Window→preferences→java→editor→Folding, and select/unselect the various folding options.)
You can send as email to (preferred). If email is a problem for some reason, you may turn in a hard-copy. In this case the pages should be readable, dated, and stapled together. Your name should appear on the first page.