What do you mean by Java Virtual Machine?

The Java Virtual Machine (JVM) is the runtime engine of the Java Platform, which allows any program written in Java or other language compiled into Java bytecode to run on any computer that has a native JVM. JVMs run in both clients and servers, and the Web browser can activate the JVM when it encounters a Java applet.

What is JVM why Java called the platform independent programming language?

Java is class based and object oriented programming language. This bytecode is sent to Java virtual machine (JVM) which resides in the RAM of any operating system. JVM recognizes the platform it is on and converts the bytecodes into native machine code. Hence java is called platform independent language.

Is JVM an actual virtual machine?

The JVM is a virtual machine that runs Java class files in a portable way. Being a virtual machine means the JVM is an abstraction of an underlying, actual machine–such as the server that your program is running on.

How do I install a Java virtual machine?

Download and install the latest Java Virtual Machine in Internet Explorer. 1. Go to www.java.com. 2. Click Free Java Download. 3. Click Agree and Start Free Download. 4. Click Run. Notes: If prompted by the User Account Control window, click Yes.

How to learn JVM?

For understanding Java/the JVM’s architecture: read Wikipedia, the specs and the source code. For understanding how object-orientated code is done on a low level: try and emulate features like inheritance/polymorphism/encapsulation in a lower-level language like C.

How does the Java virtual machine work?

The Java Virtual Machine uses an operand stack to supply parameters to methods and operations, and to receive results back from them. All byte code instructions take operands from the stack, operate on them, and return results to the stack.

How does JVM work?

A Java virtual machine (JVM) is an abstract computing machine that enables a computer to run a Java program. There are three notions of the JVM: specification, implementation, and instance. An instance of a JVM is an implementation running in a process that executes a computer program compiled into Java bytecode.