CS210: Introduction to Java development Tools
following questions about the Sun Java Development Kit (JDK) and Dr Java in your own words. Each answer should be 1
paragraph long. Your answers must be printed (not
handwritten). All your answers together must fit on one side of one
sheet of paper.
What are the two main component programs in the
Sun Java Development Kit? What does each
of them do?
What is the difference between the filename
ending with .java and the file name ending with .class?
What is Dr
Java? What kinds of things can we do with Dr
Why is it easier to use Dr
Java with the Sun JDK than to use the Sun JDK by itself?
The assignment is due at the BEGINNING of the lab. You can only work on
the lab once you complete the pre-lab assignment.
This lab gives
you experience working with Dr Java. The goal
of the lab is to get you started with Dr Java so you
are better prepared when you begin writing your own source code in lab 2.
This lab works
with a small graphics application that displays “eyes” that follow the
mouse. You will use a similar process for the other labs and projects in
this course. Your TA will lead you
through the following process:
save, and unzip the file Lab1.zip on your removable
media (floppy disk, Zip disk, or memory stick) creating a directory named Lab1.
the Dr Java Application on your PC. You may want to see line numbers to answer
the questions. Using the menu Edit
-> Preferences … under the
category Display Options, check the box labeled Show All Line Numbers.
a new Dr Java project in the Lab1 directory by
selecting the menu Project -> New… naming the project file Lab1
and saving it in your new Lab1 directory.
(Dr Java automatically opens an Untitled
file in the editor window which you will ignore.)
the menu File-> Open, open the file EyeballPanel.java
and the file Eye.java. Dr Java will automatically include these as source files in
the Lab1 Project. Use the menu Project
-> Save to save the updated project file.
the menu Project -> Compile Project, compile the files. Dr Java invokes the
Sun JDK javac compiler for you on each file in the
the file that contains the main method (EyeballPanel.java) in the sidebar
the menu Tools -> Run Document’s Main Method, run the
application. It will appear in a
new Window in the upper left corner of your screen.
with the application and read the Java source code, so you can answer the
questions for the lab report.
you are through with the lab, close the Project using the menu Project
-> Close. Be sure to remove
your media and take it with you.
Before you leave, have your TA
check off that you completed the lab.
document that answers the following questions. Your lab must be
printed (not handwritten).
following questions related to what you did in this week’s lab.
happens when you resize the application window?
you run the application, the window that pops up has a
title. In which file and at what line number in the code is that title
22 of EyeballPanel.java has the statement this(20,32). What happens when you change the two parameters of
in the directory you created for this project. What are the names of the
source code files? What are the names of the byte code files? What
is the name of the other file you find there?
Open it with Wordpad and describe what you
find in it, but do not edit it.
can you make sure another CS110 student is not able to sit down at the
workstation after you leave and look at your work? (Even though that
would NEVER happen ;-)
Note: You should work alone on the
The assignment is due at the BEGINNING of your next lab.