Java History Background information about Java and how the background affected it’s development.

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Presentation transcript:

Java History Background information about Java and how the background affected it’s development

James Tam Java: History Computers of the past Image © University of Pennsylvania

The invention of the microprocessor revolutionized computers Java: History (2) From the “Intel museum” Image courtesy of James Tam

James Tam It was believed that the logical next step for microprocessors was to have them run intelligent consumer electronics. – “Smart homes” – “Smart washer-dryers” – “Smart vacuums” Java: History (3)

James Tam Java History (4) Sun Microsystems funded an internal research project “Green” to investigate this opportunity. – Result: A programming language called “Oak” Blatant advertisement: James Gosling was a graduate of the U of C Computer Science program

Java History (5) – Problem: There was already a programming language called Oak. – The “Green” team met at a local coffee shop to come up with another name... Java!

The concept of intelligent devices didn’t catch on. Project Green and work on the Java language was nearly canceled. Java: History (6)

James Tam Java: History (7) The popularity of the Internet resulted in Sun’s re-focusing of Java on computers. Prior to the advent of Java, web pages allowed you to download only text and images. Your computer at home running a web browser User clicks on a link Images and text get downloaded Server containing a web page

James Tam Your computer at home running a web browser Java enabled web browsers allowed for the downloading of programs (Applets). Java is still used in this context today: – Facebook (older version) – Hotmail (older version) Java: History (8) Java version of the Game of Life: Online checkers: User clicks on a link Java applet downloaded Server containing a web page

James Tam Why ‘ Javac ’ & ‘ Java ’: Consequence Of Java History

James Tam Adding Java Code To A Webpage The code can be run through a web browser instead of manually invoked via the command line. – These Java programs are ‘applets’ – How to create a simple Java applet: – How to get an applet to run when your web page is accessed

James Tam References

James Tam After This Section You Should Now Know How Java was developed and the impact of its roots on the language Major players and events in the development of Java