Answer Posted / ranganathkini

In the classic sense of software development, programs are
coded in higher level languages such as C/C++, then that
source code needs to be compiled into native machine
language specific to that platform so that the program is
made executable.

Java compiler on the other hand does not compile Java source
files into native machine language, instead it compiles the
source code into bytecodes. These bytecodes are platform
independant i.e. in other words specific to to the Java
Virtual Machine specification. This enables platform
independant compilation.

When the bytecode compiled programs are executed thru the
Java interpeter, it converts those bytecodes into native
machine code and executes them thru the JVM which is
specific to host environment it is running on. This enables
platform specific execution.

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