Lecture 2
Assignment 5:
Reading: Chapters 12, 13, and 14 from Java: First Contact
Programming:
(1) Problem 3 and 6 of Chapter 7, Java: First Contact
(2) Problem 3, 4 and 5 of Chapter 8, Java: First Contact
Assignment 4:
Reading: Chapters 7 from Java: First Contact
Programming:
(1) Problem 1 of Chapter 5, Java: First Contact
(2 and 3) Problem 2 and 3 of Chapter 6, Java: First Contact
(4) Write a program that sums a sequence of integers. The first integer
read specifies the number of integers remaining to be entered.
Here are two examples:
Example 1
3
10
60
5
The sum of the 3 numbers is 75.
Example 2
5
100
10
100
50
500
The sum of the 5 numbers is 760.
(5) Write a program that sums a sequence of integers. The end of the
sequence will be specified with a -1.
Here are two examples:
Example 1
10
60
5
-1
The sum of the 3 numbers is 75.
Example 2
100
10
100
50
500
-1
The sum of the 5 numbers is 760.
Assignment 3:
Reading: Chapters 5 and Chapter 6 from Java: First Contact
Programming:
Problem 2, 3, 4, 5, and 6 of Chapter 4, Java: First Contact
Assignment 2:
Reading: Chapters 4 from Java: First Contact
Programming:
Problem 3, 4, and 5 of Chapter 3, Java: First Contact
Assignment 1:
Reading: Chapters 1, 2, and 3 from Java: First Contact
Programming:
(1) Last problem of Chapter 1, Java: First Contact
(2) A simple program that prints out your name, phone number, and
social security number.
Chapter 8:
Ex 3,
Ex 4,
Ex 5 and the
Car,
Cooker, and
Dish classes.
Chapter 7:
Ex 3,
Ex 6 and the
Journey class.
Chapter 5:
Ex 1,
Summing integers (when
user specifies the number of integers),
Summing integers (until
user specifies -1)
Chapter 4:
Ex 2 ,
Ex 3 ,
Ex 4 ,
Ex 5 ,
Ex 6
Chapter 3:
Ex 3 ,
Ex 3 (cool version) ,
Ex 4 ,
Ex 5
A simple program
that prints out your name, phone number, and social security
number.
Quizzes
Quiz 5 (programming) and
suppliment code :
Solution
Quiz 4 (programming)
: Solutions
Version 1,
Version 2
Quiz 3 (programming) and
suppliment code
: Solutions
part (a),
part (b)
Examples
Graphical User Interface (GUI) application:
This
Adder
application is an example of a GUI application (without having to be
an applet)
Fun Applet:
Genie applet:
code
and
applet
Advanced Applets:
CardShow example shows the use of the Choice GUI object. It also shows
the how to download images into an applet:
code
and
applet
(
images
of cards used in this example)
Applets:
BeanJar example (from our last class):
code
and
applet
Persistence:
Example of persistence (storing objects to disk and reading objects
from disk) through the
PersistentPeople
class.
Chapter 12:
Example of inheritance through the extended Person class:
PersonWithAddressInfo
Chapter 9:
Example of a collection of
Person
objects through the use of the Vector class.
Chapter 7 and 8:
Example of Person class:
Version 1,
Version 2,
Version 3,
Version 4
Example of
Rectangle class.
Chapter 5:
Example of for loops:
(1) simple,
(2) summation of
integers from 1 to number,
(3) nested for loops
Example of while loops:
(1) Original greetings
program,
(2) Greetings
with while loop,
(3) Greeting
with while and break
Chapter 4:
Person classification
(uses if/else statements)
Greetings
(uses switch/case statements)
Chapter 3:
Sample from book
2. When the File Download box appears, choose Run this program from its current location.
3. Click Yes when the Security Warning appears.
4. Type c:\cst310 in Unzip to Folder in the
WinZip dialog.
5. Move the .class files from c:\cst310\Disk1\classes\bytecode
to c:\cst310\java\lancs. This can be done by
doing the following from the command prompt (cmd):
E:\irfan> c:
C:\WINNT> cd \cst310
C:\cst310> mkdir java
C:\cst310> mkdir java\lancs
C:\cst310> move Disk1\classes\bytecode\* java\lancs
6. In Visual J++, under:
Project -> Setting -> General -> Class path directories
add:
c:\cst310
Your final string under Class path directories may look
like this:
c:\winnt\java\classes\classes.zip;c:\cst310
7. (Optional): If you want to run jview from the command line, add
c:\cst310 to your CLASSPATH variable:
set CLASSPATH=c:\cst310
Dates: 10/27, 11/3, 11/10, 11/17, 11/24, 12/1, 12/8, and 12/15
Place: Room 1066, McDonnell Douglas Hall, Frost Campus, Saint Louis University
11/5 session has been cancelled for now. It will be reschedule later on in the semester.
Question: I get this error when I compile my program:
error J0051: Undefined package 'lang'
Answer: The fix is to add the following line to:
Project -> Setting -> General -> Class Path directories:
Note: Since I use Windows NT, my system path is c:\winnt. For some
people, it might be c:\windows or c:\win95.
c:\winnt\java\classes\classes.zip
Question: How do I run my Java program from the DOS prompt?
Answer: You can run your Java program from the DOS prompt by running the Java interpreter (jview.exe) by hand. Here is an example:
E:\irfan\SLU\cst310\Simple> c:\WINNT\jview.exe simple.class
Teaching Assistant:
Hung Tang
Applied Computer Science
Parks College of Saint Louis University
E-Mail: tanghp@sol.slu.edu
Java Development Kit from Microsoft
Documentation for standard Java packages
The Java Language Specification
The installation procedure in the trial version of Visual J++ is
somewhat flaky. It sometimes leaves out the classes.zip
file from the c:\windows\java\classes directory. Please
download classes.zip and
place it in under the c:\windows\java\classes directory.
Note that depending upon your system, c:\windows maybe be
c:\win95 or c:\winnt.
Chapter 3, Question 5 requires the use of the GregorianCalendar class.
Unfortunate, this class is missing from the Java Virtual Machine from
Microsoft. To rectify this situation, please do the following:
- Create directory c:\cst310\java\io
- Create directory c:\cst310\java\util
Then install:
- Serializable.class
under c:\cst310\java\io
- Calendar.class
under c:\cst310\java\util
-
GregorianCalendar.class under c:\cst310\java\util
Some people may also need these:
-
TimeZone.class under c:\cst310\java\util
-
TimeZoneData.class under c:\cst310\java\util
Chapter 4, Question 5 requires the use of Card::Card(int s, int
v). However, there is a bug in the Card class. Please download
this version of Card.class
and save it under c:\cst310\java\lancs. This means
that you will be overwriting the old version of Card.class.
If you are missing other files, please check here. If you cannot find the file you are
looking for, please let the instructor know.
If you are having problems using the BasicIo class, take a look at this example for an alternate
way of obtaining input from the user.