Programming Methodology (1)

MODULE TEAM

Dr Aaron Kans Dr Sin Wee Lee

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Software and Programming

public class Game{ Car f1; f1.spin();}

The set of instructions that tells a computer what to do is called a program

public class Game{ Car f1; f1.spin();}

Software is the name given to a single program or a set of programs.

Application software is the name given to useful programs that a user might need.

System software is the name given to special programs that help the computer to do its job.

public class Game{ Car f1; f1.spin();}

Programming is the task of writing instructions for the computer

public class Game{ Car f1; f1.spin();}

These instructions have to be written in a special programming language.

public class Game{ Car f1; f1.spin();}

Examples include: C++, Visual Basic, Pascal, Java. Examples include: C++, Visual Basic, Pascal, Java.

public class Game{ Car f1; f1.spin();}

Examples include: C++, Visual Basic, Pascal, Java.

Compiling Programs

COMPILERif (words > MAX){ System.out.print();}

program (source) code

00111110 11010010 11110010 01010110

machine code

Programmer

Program user

PC COMPILERif (words > MAX){ System.out.print();}

program (source) code

00111110 11010010 11110010 01010110

machine code

Programmer

PC user

MAC COMPILERif (words > MAX){ System.out.print();}

program (source) code

11001110 00110000 00100101 11100100

machine code

Programmer

MAC user

Java Programming

JAVA COMPILERif (words > MAX){System.out.print();}

program code

JVM

Java byte code

11110011000011010101011110000101

Java Programmer

00111110 11010010 11110010 01010110

10011001000111110101011111100000

01100011111110001010110010001001

The TIOBE Programming Index

(http://www.tiobe.com)

Your first program

public class Hello{ public static void main(String[] args) { System.out.println("Hello world"); }}

Hello Worldpublic class Hello{

}

public static void main(String[] args) { }

System.out.println("Hello world");

public class Hello{ public static void main(String[] args) { System.out.println("Hello world"); }}

Hello Worldpublic class Hello{

}

public Static void main(String[] args) {

System.out.println("Hello world");

public class Hello{ public static void main(String[] args) { System.out.println("Hello world"); }}

Hello Worldpublic class Hello{

}

public Static void main(String[] args) {

System.out.println("Hello world");

public class Hello{ public static void main(String[] args) { System.out.println("Hello world"); }}

Hello Worldpublic class Hello{

}

public Static void main(String[] args) {

System.out.println("Hello world");

public class Hello{ public static void main(String[] args) { System.out.println("Hello world"); }}

Hello Worldpublic class Hello{

}

public static void main(String[] args) {

System.out.println("Hello world");

public class Hello{ public static void main(String[] args) { System.out.println("Hello world"); }}

Hello Worldpublic class Hello{

}

public static void main(String[] args) {

System.out.println("Hello world");

public class Hello{ public static void main(String[] args) { System.out.println("Hello world"); }}

Hello Worldpublic class Hello{

}

public static void main(String[] args) { }

System.out.println("Hello world");

public class Hello{ public static void main(String[] args) { System.out.println("Hello world"); }}

Hello Worldpublic class Hello{

}

public static void main(String[] args) { }

System.out.println("Hello world");

Integrated development

environment (IDE)

Type your programs here

Use these icons to compile and run you program

Compiler errors reported here

Your files shown here