The History of Java

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18 Νοε 2013 (πριν από 3 χρόνια και 9 μήνες)

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The History of Java

By: Drew Fleming

Before I Start Teaching You Guys


Important things to keep in mind


Java is not the next step in C++ progression


Java was developed by Sun for Sun


Sun is not Bell Labs


Java’s syntax only looks like C++ because that
was the designers preference


Java was designed from the ground up


Any questions?


In the beginning


We begin in 1990


Hardly an internet as we know it


PC’s were getting more popular


Sun felt like it missed the personal pc bus


Patrick Naughton was about to quit but before
he did he wrote down everything he hated
about Sun and emailed it to the CEO


CEO loved it and forwarded it to the whole
company


Everyone loved Naugton’s idea




In the Beginning


Everyone loved to bitch so much a bunch of
high level engineers stayed up until 4:30AM
talking about how to turn it around.


This resulted in John Gage and others formed
a project called Green


Offsite from Sun


Top secret


$1,000,000

The Green Project


WTF do we do now?


They had no real plan in mind to begin with


They knew Microsoft owned the PC market


Thus their new goal was to design software and
an environment that could run anywhere, even in
things people didn’t think of as computers


Noticed that computers were everywhere


Toasters


VCR’s


Doors


Wanted to make them work together

The Juices are Now Flowing


Official Goal


“To develop and license an operating
environment for consumer devices that
enables services and information to be
persuasively presented via the emerging
digital infrastructure.”

What Language Shall We Use


C++


Most popular


Designed for Speed


However it was easy to break


Consumers would flip if their TV remote
crashed


Reliability>Speed


Gosling needed something new

Oak


Gosling had been working on a C++
replacement already named after a tree
outside his office window.


“From the initial ‘Oh, f***’ to getting to a
reasonable state only too a few months.”



Naughton was working on graphics


Aug. 1991
-

The graphics were running
correctly on Oak

*7


Used “hammer technology” to make a
‘remote control’ out of a sharp minitelevision,
touch screen, gameboy speakers, and a Sun
Sparc workstation.


Hacked like mad to get Oak to work on it, and
finally did.


Presented *7 to the CEO.


He loved that so much.


FirstPerson


Subsidiary of Sun to sell *7 to companies


No one wanted to buy it


Why make a device that makes my device
easier to use? IT MAKES NO SENSE they
said.


However, interactive TV’s were getting
attention


FirstPerson lost the bid at Time Warner, 3D0


FirstPerson was screwed.

Enter the Internet


Sun supplied 50% of the host computers that
ran the internet. How did they miss that
market??


A new plan for Oak was created by Bill Joy.


Internet play
-

Giving away software to build a
market share


Oak renamed to Java after coffee


Naughton wrote an interpreter for a web
browser called HotJava


Why Java is Good


Reliable


No memory access, no explicit garbage
collection helped to make software more
reliable that C++. Added multithreading and
automatic garbage collection.


Secure


Designed to be secure because it was
designed to allow secure execution across a
network. Lots of unsafe thing that C++ used
had to be tossed.

Byte Code and Other Goodies


Java was good for the web


The precompiled byte code can fly around the
web, be device independent and run on any
machine that has the interpreter complied for
their computer.


Most C++ errors were to do memory
allocation


To eliminate this, Java does not have much of
this.

Thanks

Bank, David. "The Java Saga." 1993. 20 Apr. 2006
<www.wired.com/wired/archive/3.12/java.saga_pr.html>.

Byous, Jon. "Java Technology: the Early Years." 3 Apr. 2006. 20
Apr. 2006 <java.sun.com>.

Harold, Elliotte R. "What is Java."
Comp.Lang.Java FAQ
. 1995. 20
Apr. 2006 <www.ibiblio.org/javafaq/javafaq.html>.



This article is licensed under the GNU Free Documentation
License. It uses material from the Wikipedia article “Java
Programming Language”