Why is Java known as platform-neutral language?

Plateform neutral or platform independence, means that programs written in the Java language must run similarly on any supported hardware/operating-system platform. A programmer should be able to write a program one time, compile it one time, and then be able to execute it anywhere; holding true to the Sun Microsystems slogan, "Write Once, Run Anywhere. "ava was designed to not only be cross-platform in source form like C, but also in compiled binary form. Since this is frankly impossible across processor architectures Java is compiled to an intermediate form called byte-code. A Java program never really executes natively on the host machine. Rather a special native program called the Java interpreter reads the byte code and executes the corresponding native machine instructions. Thus to port Java programs to a new platform all that is needed is to port the interpreter and some of the library routines. Even the compiler is written in Java. The byte codes are precisely defined, and remain the same on all platforms.


Java is used in many facets, from the digital displays on our microwaves and refrigerators in our kitchen to the digital displays on our telephones, fax machines, and copiers in our office. It is used on the web (via applets