- Java language developed by company Sun Microsystems and creator is Jamesh Gosling.
Story behind development of Java
- Sun Microsystems Started by group of the students who are studding in Standard University. These people found the problem in their room with electronic consumable remote. That means one electronic consumable control is not worked on another electronics consumable. These people want to develop a common remote control which is controlling all the electronic consumables so they contact James Gosling and requested for the projects. Sun Microsystems started by group of students out of them one person also Indian whose name Vinode Khosla.
- James Gosling and his team members given the project name as Green started in the year 1990 and common remote control completed in the year 1992.
- The James Gosling team develop a new language called as OAK But this name is already selected by some other company renamed as Java but java has no meaning representation of Island in Indonesia. The unofficial abbreviation of java is Just another virtual analyzer (JAVA).
QUE:-Why an Oak name for java language?
ANS-:Why Oak? Oak is a symbol of strength and chosen as a national tree of many countries like the U.S.A., France, Germany, Romania, etc.
QUE:-Why Java a name for java language?
ANS-:Java is an island of Indonesia where the first coffee was produced (called java coffee).
JAVA introduction:-
| Author | James Gosling |
| Vendor | Sun Micro System |
| Project name | Green Project |
| Type | open source & free software |
| Initial | OAK language |
| Present Name | java |
| Extensions | .java & .class & .jar |
| Initial version | JDK 1.0 (java development kit) |
| Present version | java 8 |
| Operating System | multi Operating System |
| Implementation Lang | c, CPP…… |
| Symbol | coffee cup with saucer |
| SUN | Stanford Universally Network |
| Slogan/Motto | WORA (write once run anywhere) |
Java:-
- Developed by James Gosling at Sun Micro Systems in 1996 used to develop particularly client-server web applications. Now it is merged into Oracle Corporation.
Java Version History
Now a day 8 versions of java are released, which is listed below with realizing date.
- JDK Alpha and Beta (1995)
- JDK 1.0 (23rd Jan 1996)
- JDK 1.1 (19th Feb 1997)
- J2SE 1.2 (8th Dec 1998)
- J2SE 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)
Table of Contents
Overview of Java
- Java is one of the programming languages or technology used for developing web applications. Java language was developed at SUN Micro Systems in the year 1995 under the guidance of James Gosling and their team. Originally SUN Micro Systems is one of the Academic universities (Standford University Network)
- Whatever the software developed in the year 1990, SUN Micro Systems has released on the name of oak, which is the original name of java (scientifically oak is one of the tree names). The OAK has taken 18 months to develop.
- The oak is unable to fulfill all requirements of the industry. So James Gosling again reviews this oak and released it under the name of java in the year 1995. Scientifically java is one of the coffee seed names.
Java is divided into three categories, are
- J2SE (Java 2 Standard Edition)
- J2EE (Java 2 Enterprise Edition)
- J2ME (Java 2 Micro or Mobile Edition)
J2SE
J2SE is used for developing client-side applications.
J2EE
J2EE is used for developing server-side applications.
J2ME
J2ME is used for developing mobile or wireless applications by making use of a predefined protocol called WAP (wireless Access / Application protocol).
All versions of java
Java Version SE 7
J2SE 1.2 is called Dolphin and it is released on 28 July 2011.
Features
- Strings in switch Statement
- Type Inference for Generic Instance Creation
- Multiple Exception Handling
- Support for Dynamic Languages
- Try with Resources
- Java NIO Package
- Binary Literals underscore in literals
- Diamond Syntax
- Automatic null Handling
Java Version SE 6
J2SE 1.2 is called Mustang and it is released on 11 December 2006.
Features
- Scripting Language Support
- JDBC 4.0 API
- Java Compiler API
- Pluggable Annotations
- Native PKI, Java GSS, Kerberos, and LDAP support.
- Integrated Web Services.
- Lot more enhancements.
J2SE Version 5.0
J2SE 1.2 is called Tiger and it is released on 30 September 2004.
Features
- Generics
- Enhanced for Loop
- Autoboxing/Unboxing
- Typesafe Enums
- Varargs
- Static Import
- Metadata (Annotations)
- Instrumentation
J2SE Version 1.4
J2SE 1.2 is called Merlin and it is released on 6 February 2002.
Features
- XML Processing
- Java Print Service
- Logging API
- Java Web Start
- JDBC 3.0 API
- Assertions
- Preferences API
- Chained Exception
- IPv6 Support
- Regular Expressions
- Image I/O API
J2SE Version 1.3
J2SE 1.2 is called Kestrel and it is released on 8 May 2000.
Features
- Java Sound
- Jar Indexing
- A huge list of enhancements in almost all the java areas.
J2SE Version 1.2
J2SE 1.2 is called playground and it is released on 8 December 1998.
Features
- Collections framework.
- Java String memory map for constants.
- Just In Time (JIT) compiler.
- Jar Signer for signing Java ARchive (JAR) files.
- Policy Tool for granting access to system resources.
- Java Foundation Classes (JFC) which consists of Swing 1.0, Drag and Drop, and Java 2D class libraries.
- Java Plug-in
- Scrollable result sets, BLOB, CLOB, batch update, and user-defined types in JDBC.
- Audio support in Applets.
JDK Version 1.1
JDK 1.1 is released on 19 january, 1997
Features
- JDBC (Java Database connectivity)
- Inner Classes
- Java Beans
- RMI (Remote Method Invocation)
- Reflection(introspection only)
JDK Version 1.0
JDK 1.0 is called OAK, and it is released on 23 January 1996.
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