CS 110 Lecture 1-1

Chapter 1's Learning Objectives

Know why it is necessary to program computers

Understand the differences between hardware and software

Know the five major components of a typical computer system

Understand the differences between operating system versus application software

Know the history of Java

Know the differences between Java applications versus Java applets

To recognize the common elements to all programming languages

To understand the role of the Java compiler and the Java Virtual Machine

To know how to compile and execute a Java program

To understand the fundamental concepts of object-oriented programming

To know the steps involved in creating programs

Chapter 1's Learning Objectives

Know why it is necessary to program computers

Understand the differences between hardware and software

Know the five major components of a typical computer system

Understand the differences between operating system versus application software

Know the history of Java

Know the differences between Java applications versus Java applets

To recognize the common elements to all programming languages

To understand the role of the Java compiler and the Java Virtual Machine

To know how to compile and execute a Java program

To understand the fundamental concepts of object-oriented programming

To know the steps involved in creating programs

History of Java

Early failures

Java was designed by Sun Microsystems in the early 1990s develop a new technology for programming next generation smart appliances, which Sun expected to be a major new opportunity.

This project failed because no one wanted to use it.

Java was redesigned to work with cable TV. This project also failed because the cable companies decided to choose a competing system.

Success

When the World Wide Web became popular in 1994, Sun began redesigning Java to work with the Web.

In 1996 they released Java for the Web and it was an instant hit. The rest is history ...

Java 1.0 - 212 classes in 8 packages, released May 1996
Java 1.1 - 503 classes in 23 packages, released Feb. 1997
Java 1.2 (Also known as Java 2) - 1,520 classes in 59 packages, Swing graphical API, released Dec 1998
Java 1.3 - released May 2000
Java 1.4 - released Feb. 2002
Java 5.0 - 3562 classes in 166 packages, released Sept. 2004.

Java Characteristics

Java was successful, both because of Sun's persistence marketing, but also because there was a need for a language with its characteristics.

Supports the Object-Oriented (OO) programming methodology

Platform Independence - allow the same program to be executed on multiple operating systems

Built-in support for using computer networks

Secure - it should execute code from remote sources safely

Easy to learn and use by borrowing the good parts of older Object Oriented languages like C++

Automatic Garbage Collection

Supports International character sets through Unicode

Free and disseminated over the Internet

Java Program Types

Java Applets - runs in browser

JavaServer Pages - runs on Web server

Java Applications - runs on desktop

URL: http://www.cwu.edu/~schwing/cs110/Java/notes/lecture1-1.html
Title: CS 110: Lecture Notes for Programming Fundamentals 1
Author: Ed Gellenbeck, Central Washington University
Last Updated: Monday, January 16, 2006

Lecture 1-1: History of Java

Chapter 1's Learning Objectives

Chapter 1's Learning Objectives

History of Java

Early failures

Success

Java Characteristics

Java Program Types