Portal:Java

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This page is about the Java programming language. For the island of Java, see Java (island) and Portal:Indonesia.


The Java Portal

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Welcome to Wikipedia's Java portal. Java refers to a number of computer software products and specifications from Sun Microsystems that together provide a system for developing application software and deploying it in a cross-platform environment. Java is used in a wide variety of computing platforms from embedded devices and mobile phones to enterprise servers and supercomputers. Java is nearly ubiquitous in mobile phones, Web servers and enterprise applications, and while less common on desktop computers, Java applets are often used to provide improved functionality while browsing the World Wide Web. Code is produced through writing in the Java programming language, then executed by a Java Virtual Machine (JVM). In 2006, Sun Microsystems made the bulk of its implementation of Java available under a public license.
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WebLogic

Owned by Oracle Corporation, Oracle WebLogic consists of a JavaEE platform product family that includes:

Prior to co-founding WebLogic, Inc., in September 1995, Paul Ambrose and Carl Resnikoff had developed (pre-JDBC) Oracle, Sybase, and Microsoft SQL Server database-drivers for Java under the name dbKona, as well as a "three tier" server to permit applets to connect to these databases.

This WebLogic 1.48 server had the name T3Server (a bastardization of "3-Tier Server"). Concurrently, Pitman and Pasker had worked on network-management tools written in Java. Pasker had written an SNMP stack in Java and a W32 native method for ICMP ping, while Pitman worked on applets to display the management data.

The 1.48 server version had (among other hidden features) the ability to extend it by modifying a dispatcher and adding a handler for different types of messages. Pasker talked Ambrose into sending him the source code for the server, and Pasker extended it so that applets could make SNMP and PING requests on the network, and display the results.

At this point, the founders worked together to pursue what eventually became the "Application Server".

BEA Systems acquired WebLogic, Inc. in 1998, following which it became BEA WebLogic. Oracle acquired BEA in 2008, following which it became Oracle WebLogic.

See also Main article WebLogic, Inc.

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Read and edit Commons

Here is a schema of the general architecture of a program running in a Java Virtual Machine.

Java-jvm.png

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William Nelson Joy
Bill joy.jpg
Born (1954-11-08) November 8, 1954 (age 61)
Residence United StatesUnited States
Alma mater University of Michigan, University of California, Berkeley
Occupation Computer Scientist
Known for Co-founder of Sun Microsystems
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"Why the future doesn't need us"

William Nelson Joy (born November 8, 1954), commonly known as Bill Joy, is an American computer scientist. Joy co-founded Sun Microsystems in 1982 along with Vinod Khosla, Scott McNealy, Andy Bechtolsheim and Vaughan Pratt, and served as chief scientist at the company until 2003. He is widely known for having written the essay "Why the future doesn't need us", where he expresses deep concerns over the development of modern technologies. He has two children, Hayden and Maddie.

Sun

According to a Salon.com article, during the early 1980s DARPA had contracted the company Bolt, Beranek and Newman (BBN) to add TCP/IP to Berkeley UNIX. Joy had been instructed to plug BBN's stack into Berkeley Unix, but he refused to do so, as he had a low opinion of BBN's TCP/IP. So, Joy wrote his own high-performance TCP/IP stack. According to John Gage,

"BBN had a big contract to implement TCP/IP, but their stuff didn't work, and Joy's grad student stuff worked. So they had this big meeting and this grad student in a T-shirt shows up, and they said, 'How did you do this?' And Bill said, 'It's very simple — you read the protocol and write the code.'"

Rob Gurwitz, who was working at BBN at the time, disputes this version of events.

In 1986, Joy was awarded a Grace Murray Hopper Award by the ACM for his work on the Berkeley UNIX Operating System.

Joy was also a primary figure in the development of the SPARC microprocessors, the Java programming language, Jini / JavaSpaces and JXTA.

On September 9, 2003 Sun announced that Bill Joy was leaving the company and that he "is taking time to consider his next move and has no definite plans".

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Did you know...


  • ... that Java SE 6 is code-named Mustang?
  • ... that Duke is Java's mascot and "smart agent" assisting the user in PDA?

Quiz

1. Who said: "There's only one trick in software, and that is using a piece of software that's already been written."?

Answer

2. When was Java first released?

Answer

3. Why is JavaScript thus named if it is essentially unrelated to Java?

Answer

4. Which was Java's original name: Green, Oak, Stealth, C++ ++ --, firstperson, Duke or Coffee?

Answer

5. True or False: An Interface can never be private or protected?

Answer (External link)

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  • 1992: Java 0 (Oak)
  • 1995: Java 1.0
  • 1997: Java 1.1
  • 1998: Java 1.2
  • 2000: Java 1.3
  • 2002: Java 1.4
  • 2004: Java 5
  • 2006: Java 6
  • 2011: Java 7
  • 2014: Java 8

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Simon Phipps

Index of Java articles

0-9      A       B       C       D       E       F       G       H       I       J       K      L      M      N      O      P      Q      R      S      T      U      V      W      X       Y      Z


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