Java - Introduction

1. What is java?

  • Java is a programming language and a platform.
  • Platform: Any hardware or software environment in which a program runs, is known as a platform. Since Java has its own runtime environment (JRE) and API, it is called platform.

2. History of Java

  • James Gosling, his team initiated the Java language project in June 1991. The small team of sun engineers called Green Team.
  • Originally designed for small, embedded systems in electronic appliances like set-top boxes.
  • After that, it was called Oak(tree name) and was developed as a part of the Green project.
  • In 1995, Oak was renamed as Java because it was already a trademark by Oak Technologies.
  • Java is an island of Indonesia where first coffee was produced (called java coffee).
  • JDK 1.0 released in(January 23, 1996).

3. Java Version History

  • JDK Alpha and Beta (1995)
  • JDK 1.0 (23rd Jan, 1996)
  • JDK 1.1 (19th Feb, 1997)
  • J2SE 1.2 (8th Dec, 1998)
  • 2SE 1.3 (8th May, 2000)
  • J2SE 1.4 (6th Feb, 2002)
  • J2SE 5.0 (30th Sep, 2004)
  • Java SE 6 (11th Dec, 2006)
  • Java SE 7 (28th July, 2011)
  • Java SE 8 (18th March, 2014)

3. Java Program Execution

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