Sadegh Aliakbary Sharif University of Technology Spring 2011

Agenda Introduction to Course Java History Java Characteristics Syllabus References Evaluation Policy Spring 2011Sharif University of Technology2

This Course Covers: Java programming language Object Oriented Concepts Some Programming Skills Spring 2011Sharif University of Technology3

Java History Java was created in 1991 by James Gosling in Sun Microsystems. Initially called Oak in honor of the tree outside Gosling's window Its name was changed to Java because there was already a language called Oak. Sun Microsystems released the first public implementation as Java 1.0 in 1995 Java syntax is similar to C and C++. Spring 2011Sharif University of Technology4

Java Motivation The need for platform independent language To be embedded in various consumer electronic products like toasters and refrigerators Platform independent?! Hardware Operating System Spring 2011Sharif University of Technology5

Java Motivation (2) At the same time, the World Wide Web and the Internet were gaining popularity. Java could be used for internet programming. Why? Platform independence Creation of Applets Spring 2011Sharif University of Technology6

The Java technology is: A programming language Java can create all kinds of applications A development environment A compiler (javac) An interpreter (java) A documentation generator (javadoc) … Compare it to C++ Spring 2011Sharif University of Technology7

High-Level Languages Spring 2011Sharif University of Technology8

Java Virtual Machine Spring 2011Sharif University of Technology9

Compile and Execution Stages Compare to C++ and Assembly.NET Framework Spring 2011Sharif University of Technology10

Java is Popular Some reports on programming languages popularity According to Job advertisements Book sales Finding code on the web … Spring 2011Sharif University of Technology11

Spring 2011Sharif University of Technology12 updated in 2010

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Characteristics of Java Java is simple Java is object-oriented Java is architecture-neutral Java is portable Java is interpreted Java is multithreaded Java is secure Java is robust Spring 2011Sharif University of Technology14

Further Reading Read Java page on Wikipedia Google this terms and phrases: Spring 2011Sharif University of Technology15 Java Java Mobile JVM Byte code Java Sun Java and C++ Java and C#

Exercises Download and install JDK Write a program that prints your name on the console Compile and run the program Spring 2011Sharif University of Technology16

Topics Introduction to java language Java syntax, operators, conditions, loops, … Strings Arrays Object Oriented Programming Inheritance Polymorphism Collections Generics Exception Handling Files and I/O Threads Reflection Test Refactoring GUI Networking Spring 2011Sharif University of Technology17

References Thinking in Java Bruce Eckel Fourth Edition Java How to Program Deitel & Deitel 6 th + Edition Spring 2011Sharif University of Technology18

Evaluation Policy Spring 2011Sharif University of Technology19

Quiz! Write a function that takes an array of integers as a parameter and returns the average Use this function in a program Take 10 integers from console Print the average on the console Spring 2011Sharif University of Technology20

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