Java Virtual Machine

Java Virtual Machine

Java compiler produces an intermediate code known as

byte code for a machine, known as JVM.

It exists only inside the computer memory.

Machine code is generated by the java interpreter by acting

as an intermediary between the virtual machine and real

machine.

Object Oriented

Fundamentally based on OOP.

Classes and Objects.

Efficient re-use of packages such that the programmer only

cares about the interface and not the implementation.

The object model in java is simple and easy to extend.

Platform Independent and Portable

   

“Write-Once Run-Anywhere”.

Changes in system resources will not force any change in the program.

The Java Virtual Machine (JVM) hides the complexity of working on a particular platform.

Convert byte code into machine level representation.

Robust and Secure

Designed with the intention of being secure

No pointer arithmetic or memory management!

Strict compile time and run time checking of data type.

Exception handling

It verify all memory access

Ensure that no viruses are communicated with an applet.