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Aims
• To give non-programmers confidence– Particularly written for this group so no prior
knowledge expected
• Conversion from other languages to Java– Close links with C++
Structure
• Two weeks: 9-19/09/02
• Mornings 10:00 - 12:00 Lectures– SCI 0.31 & SCI 3.05
• Afternoons 13:00-15:00 Labs Group A/B/C– NT1, NT2, NT5
• Afternoons 15:00-17:00 Labs Group D/E– NT1, NT2
Who’s Doing What
• Lectures– Steve Hordley: [email protected]– Reyer Zwiggelaar: [email protected]
• Lab Sessions– Lilian Blot, Yanong Zhu, Paul Southam, Daan
Zhu, Alex Palmer, Ling Ma, Guoying Qi, Ruiting Liu, Judy Tryggvason, Min Chen
Week One
Day Lecture Lecturer9th September10:00-12:00
SCI 3.05
Overview of the two weeks Introduction to software engineering Intro to OO analysis, design and programming First program in JAVA
Reyer Zwiggelaar
10th September9:00-11:00SCI 3.05
Primitives in Java Variables and Constants Basic operators
Steve Hordley
11th September10:00-12:00
SCI 3.05
Arrays and String String operator null value
Steve Hordley
12th September10:00-12:00
SCI 3.05
Selections: if, if-else, switch Condition and boolean operator
Steve Hordley
Any Questions
• These come up after important points in a lecture
• If there are no questions I will assume you all have understood it so far
• So, any questions….
Week Two
Day Lecture Lecturer15th September
10:00-12:00SCI 0.31
Repetitions loops: for, while, do-while Steve Hordley
16th September10:00-12:00
SCI 0.31
Objects in Java Steve Hordley
17th September10:00-12:00
SCI 0.31
Methods in Java Steve Hordley
18th September09:30-12:00
SCI 1.07
Postgraduates Registration
19th September10:00-12:00
SCI 3.05
Introduction to GUI (Graphical User Interface) Review of the two weeks into one application
Steve Hordley
19th September12:00-14:00
SCI 0.31
Deans Welcome address (SCI 0.31) Postgraduate welcome party (SCI 3.04)
Assessment Aspects
• Zero rated unit
• Two exercises from each lab-session– Printed on paper – Handed in to SYS Admin Office (or in mailbox
if set up)– One exercise from each lab-session selected (at
random) and marked
What Will We Use
• The pre-sessional course– JDK/SDK 1.4.0– Simple text editor
• MA23/MA15– The same as above– Or an IDE (Integrated Development
Environment)
Books and Documentation
• There are lots of books out there– Bruce Eckell: Thinking in Java (which is freely
available on the web)– Jan Skansholm: Java From the Beginning– O’Reilly Books: Java in a Nutshell– Pooley and Stevens: Using UML
• www.java.com
• The lecture notes
Any Questions
Computers and Programs
Memory
Program
Input
Output
Computer
Files, Directories and Disks
• Information is stored on “Hard Disks”
• Disks contain Directories (and Files)
• Directories contain Files (and Directories)
• Tree Structure– Windows Explorer
Simple Software Engineering
SourceCode
Compilation MachineReadableCode
Execution
Simple Software Engineering
• Define the problem
• Outline the solution
• Develop the outline into an algorithm
• Test the algorithm for correctness
• Code the algorithm
• Execute the program
• Document and maintain the program
Simple Software Engineering
• How many students are there in this class?
Object Oriented SE
• An attempt to model the real world
• The data determines the object/classes
• Short introduction here– More details in second week
Object Oriented SE
• A class gives a description of a real world object
• Data and methods– Data describes what the object is– Methods describes what the object can do
Object Oriented SE
• Obtain an English language description
• The nouns indicate objects
• Associate all attributes (data) with the objects
• Operations (methods) are identified by verbs associated with the objects
Object Oriented SE
• How many students are there in this class?
Any Questions
• Short break of 10 minutes
Hello World
• First Java program
• No input (initially)
• Output “Hello World” on the screen
Opening a DOS Window
• Moving about– “cd” stands for “change directory”
• “cd java” will move to a directory named “java” (that is if there is a directory named “java”)
• “cd ..” will go one directory up (if you are not already at the top directory)
– “dir” will give directory listing
Text Editing
• Type: edit HelloWorld.java– Within the DOS window you can now edit the
file HelloWorld.java
Entering Text - 1
class HelloWorld{
}
Any Questions
Entering Text - 2
class HelloWorld{
public static void main(String[] args){
}}
Any Questions
Entering Text - 3
class HelloWorld{
public static void main(String[] args){
System.out.println(“Hello …. World”);}
}
Any Questions
Entering Comments//file: HelloWorld.java
/* An application that prints the message “Hello …. World” on the screen*/class HelloWorld{
public static void main(String[] args){
System.out.println(“Hello …. World”);}
}
Any Questions
Program Layout - Not Like This
class HelloWorld{public static void main(String[] args){System.out.println(“Hello …. World”);}}
Program Layout - Not Like This
class HelloWorld { public static void main(String[] args) {System.out.println(“Hello …. World”); } }
Saving the Program
• File -> Exit– Will ask if you want to save: Yes
• File -> Save and File -> Exit
Compiling a Program
• Type: javac HelloWorld.java– javac is the Java compiler
• If there are no compiler errors than no messages will appear and a file called HelloWorld.class will be created– Type: dir
Executing a Program
• Type: java HelloWorld
• Should produce: “Hello …. World” on the screen
Any Questions
Introducing Mistakes - 1
class HelloWorld{
public static void main(String[] args)
System.out.println(“Hello …. World”);}
}
Introducing Mistakes - 2
class HelloWorld{
public static void main String[] args){
System.out.println(“Hello …. World”);}
}
Introducing Mistakes - 3
class HelloWorld{
public static void main(String[] args){
System.out.println(“Hello …. World”)}
}
Introducing Mistakes - 4
class HelloWorld{
public void main(String[] args){
System.out.println(“Hello …. World”);}
}
Any Questions
Hello
• Second Java program
• With input
• Output “Hello ????” on the screen– Where ???? stands for an argument when
executing the program, e.g. java Hello ????
Adapting First Program
class Hello{
public static void main(String[] args){
System.out.println(“Hello ”+args[0]);}
}
Any Questions
• Lab Groups– 13:00-15:00 A-NT1/B-NT2/C-NT5– 15:00-17:00 D-NT1/E-NT2
• End of the Lecture
