How Java Assignment Help Experts Explain Java Virtual Machine ?
The primary thing that makes java code platform independent is JVM( Java Virtual Machine). Platform independent codes are easy to carry as you can execute them on any computer system without making any extra effort and java virtual machine facilitates us with this functionality. So let’s have a glimpse on working of java virtual machine.
How Java Virtual Machine Works ?
JVM is an abstract machine that provides runtime environment in which java byte codes can be executed. It is also used to execute programs written in any other programming language and complied to java bytecode. However JVM itself is platform dependent as each operating system is different from other, so it is separately designed for every operating system. If you are a windows user, you can download the one developed for windows os only, if you are Mac os user, you can download the one for it. The task JVM performs are:
- Loading Code
- Verifying Code
- Executing Code
- Providing Runtime Environment.
Classloader is a subpart of JVM that loads code and a verifier examines the it so that expensive operation performed by interpreter at the run time can be eliminated. Execution engine contains three elements named as – virtual processor, interpreter and JIT compiler. The interpreter executes the bytecode.
Additionally Java Native Interface provides an interface that helps to communicate codes written in other languages such as C, C++, etc.
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