Introduction to Programming Language

Outline Course Introduction to Computer Organization Introduction to Programming Language Programming Phase Introduction to Java Programming Object Oriented Programming Concept

Lecturer Dr. Muhammad Niswar Education

Bachelor: UNHAS, 1997 Master: Univ. of Newcastle, NSW, 2001 Doctor: Nara Institute of Science & Technology, JAPAN, 2010

Research Interest Wireless/Mobile Networking, Wireless Sensor Network Mobile Application Development Embedded System Cloud Computing Network Management & Operation

http://iplab.naist.jp/member/niswar/ Email: niswar”at”unhas.ac.id

References Java Education & Development Initiatives (JEDI) Java Programming

Assessment IDE Installation & usage (10%)

NetBeans Eclipse

Programming Assignment (30%) Practical Exam (60%)

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What Is a Computer? Computer Performs computations and makes logical decisions Millions / billions times faster than human beings

Computer programs Sets of instructions by which a computer processes data

Hardware Physical devices of computer system

Software Programs that run on computers

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Computer Organization Six logical units of computer system Input unit Mouse, keyboard

Output unit Printer, monitor, audio speakers

Memory unit Retains input and processed information

Arithmetic and logic unit (ALU) Performs calculations

Central processing unit (CPU) Supervises operation of other devices

Secondary storage unit Hard drives, floppy drives

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Evolution of Operating Systems Batch processing One job (task) at a time Operating systems developed Programs to make computers more convenient to use Switch jobs easier

Multiprogramming “Simultaneous” jobs Timesharing operating systems

2003 Prentice Hall, Inc. All rights reserved.

The boot process The process by which a machine comes up from rest

state to the state that is usable is known as booting When the power is turned on The CPU runs the BIOS (Basic Input / Output System) Usually located on a chip on the motherboard Runs POST (Power On Self Test) of various hardware components Loads the boot sector program

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The boot process (continued) Boot Sector Program Located in the first sector of the hard disk or other disk Is responsible for loading the rest of the operation system into the RAM

Operating System Once it is loaded, it configures the various hardware components Then it waits for the user to issue commands Then you can run your applications

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Introduction to Programming Language Programming Language use to create/develop a program

application or other set of instructions to control the behavior of a machine.

Example: C/C++ Java Pascal Cobol

Programming Language Classification High Level

Core (compiled): Java, C++, Pascal, Fortran, Basic Script (non-compiled): bash,tcsh,perl,python,ruby,..etc

Middle Level C

Low Level Assembly

Programming Language Classification

Computer

H/WOS/KernelShellApplication

Programming Phase Problem Definition Problem Analysis Algorithm Design Coding & Debugging

Problem Definition Problem must be well & clearly defined Clearly defined problem = ½ solution Example:

– “Create a program that will determine the number of times a name occurs in a list”

Problem Analysis Solution of the problem must be formulated Example Problem:

“Create a program that will determine the number of times a name occurs in a list”

Input to the program– List of names, name to look for

Output to the program– The number of times the name occurs in a list

Algorithm Design Express our solution to step-by-step manner The way of Express:

– Human Language– Flow chart– Pseudocode

Algorithm Design- Human Language -

Get the list name of names Get the name to look for, let's call this the keyname Compare the keyname to each of the names in the list If the keyname is the same with a name in the list, add 1 to the

count If all the names have been compared, output the result.

Algorithm Design- Pseudocode -

Let nameList = List of Names Let keyName = the name to be soughtLet Count = 0For each name in NameList do the followingIf name == keyNameCount = Count + 1Display Count

Algorithm Design- Flowchart -

Start

GetNameList

GetKeyName

Count = 0

More Names ? Name = KeyName?

Count = Count + 1

A

A

DisplayCount

Stop

No

Yes

Yes

Coding & Debugging Coding:

– Create a source code based on Algorithm

Debugging:– Fixed the error found in source code

Compile-Time Error– If there is a syntax error

ExerciseWriting an algorithm

Cooking an Instant Noodle Getting the average of three numbers