Java is a class-based object-oriented programming language. It is the most popular programming language. It is a high level language ,platform independent language, robust, object-oriented and secure programming language.


Java is develops by James gosling in 1995 (first version) at sun microsystem. It is currently owned by Oracle, and more than 3 billion devices run Java. Government give sun microsystem a project in 1990-1991 to pair set-top box and television so it is convenient for users. Sun microsystem name the project as  Green project. Before Java, its name was Oak. Since Oak was already a registered company, so James Gosling and his team changes the name from Oak to Java.


  • Java is platform independent language.
  • Java is high level language.
  • Java is oops.
  • Java is 4GL language.
  • Java is dual mode language means compile time it is compiler and run time it is interpreter.
  • Java is secure due to its bytecode.
  • Java is a portable language.
    • Java can be designed for all OS.
    • Its application can be designed in one OS, but run on multiple OS.
  • Java is robust programing language.
  • Original Java has no IDE but it supports all ASCII text editor as its IDE for writing the program.
  • Java supports a lot of IDE provides by various companies such as NetBeans, eclipse, notepad++ etc.
  • Java is strongly type language.
    • strongly type language means capital letter should be capital and small letter should be small.

JAVA Version

VersionRelease date
JDK Beta1995
JDK 1.01996, January
JDK 1.11997, February
JDK 1.21998- DEC-04
JDK 1.32000-MAY-08
JDK 1.42002-FEB-13
Java SE 52004-SEP-29
Java SE 62006-DEC-11
Java SE 72011-JULY-28
Java SE 82014-MARCH-18
Java SE 92017-SEP-21
Java SE 102018-MARCH-20
Java SE 112018-SEP-25
Java SE 122019-MARCH-19
Java SE 132019-SEP-17
Java SE 142020-MARCH-17
Java SE 162021-MARCH-16
Java SE 172021-SEP-14
Java SE 182022-MARCH-22
Java SE 192022-SEP-20

JAVA Architecture

JAVA Architecture
JAVA Architecture

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