INTRODUCING JAVA ON BLUEJ ENVIRONMENT

THE PROGRAM OR CODE WRITTEN BY PROGRAMMER IS CALLED SOURCE CODE
PROCESS OF CONVERTING SOURCE CODE INTO MACHINE CODE IS CALLED COMPILATION

JAVA BYTE CODE IS A MACHINE INSTRUCTION FOR A JAVA PROCESSOR CHIP CALLED JAVA VIRTUAL MACHINE.
THE BYTE CODE IS INDEPENDENT OF THE COMPUTER SYSTEM IT HAS TO RUN UPON.

FLOWCHART:-
SOURCE CODE(.java)------>byte code(.class)(via compiler)------->My program(via Java VM)

CHARACTERISTICS OF JAVA:-
1.WORA(WRITE ONCE RUN ANYWHERE):JAVA PROGRAMS NEED TO BE WRITTEN ONCE,WHICH CAN RUN ON DIFFERENT PLATFORMS
2.LIGHT WEIGHT CODE
3.SECURITY
4.BUILT IN GRAPHICS
5.OBJECT ORIENTED LANGUAGE
6.SUPPORTS MULTIMEDIA
7.PLATFORM INDEPENDENT
8.OPEN PRODUCT

INTERNET APPLETS:-
INTERNET APPLETS ARE SMALL PROGRAMS EMBEDDED IN WEB PAGES AND ARE RUN ON VIEWER'S MACHINE IN A SECURED MANNER,BY JAVA CAPABLE BROWSERS.

STAND ALONE APPLICATIONS ARE SOFTWARE APPLICATIONS THAT DO NOT REQUIRE LOW LEVEL OPERATING SYSTEMS ON HARDWARE ACCESS