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What it is and Why You Should Use Java Virtual Machine

Written by Nexlogica Team

January 20, 2023


The Java Virtual Machine (JVM) is an abstract computing machine that enables a computer to run Java programs. It is a virtual machine that provides a runtime environment for executing Java bytecode, which is a program compiled from Java source code. The JVM acts as a “layer” between the Java code and the underlying hardware and operating system, allowing Java programs to be run on any platform that has a JVM implementation. This makes Java a “platform-independent” programming language.

To use the Java Virtual Machine (JVM), you first need to have the Java Development Kit (JDK) installed on your computer. The JDK includes the JVM, as well as other tools necessary for developing and running Java programs.

Once you have the JDK installed, you can use the JVM by doing the following:

  1. Write your Java code using a text editor or an Integrated Development Environment (IDE) such as Eclipse or IntelliJ IDEA.
  2. Compile your Java code using the Java compiler (javac) that comes with the JDK. This will convert your source code into bytecode, which can be executed by the JVM.
  3. Run your bytecode using the Java interpreter (java) that comes with the JDK. This will start the JVM and execute your bytecode on the machine.

It’s important to note that the JVM is not just for running Java code, it is also used for running other JVM-based languages like Kotlin, Scala, and Groovy.

You should use the Java Virtual Machine (JVM) when you want to run Java or other JVM-based programming languages, such as Kotlin, Scala, or Groovy, on your computer. JVM provides a runtime environment for executing Java bytecode, which is a program compiled from Java source code.

Here are some specific scenarios where you might use the JVM:

  • When you want to write cross-platform software that can run on any operating system, such as Windows, macOS, or Linux, that has a JVM implementation.
  • When you want to write server-side applications, such as web servers or backend services, that need to handle multiple concurrent connections and perform complex computations.
  • When you want to use the vast ecosystem of Java libraries and frameworks, such as Spring, Hibernate, or Apache Tomcat, that are available for various application domains.
  • When you want to write code that can leverage the security, performance, and scalability features provided by the JVM, such as automatic memory management, built-in support for multithreading, and JIT compilation.
  • When you want to use JVM based languages, such as Kotlin, Scala, or Groovy, that are built on top of JVM but offer features like functional programming, concise syntax, and improved type inference.

In summary, JVM is a powerful and versatile platform that allows you to develop and run a wide variety of software applications, from small scripts to enterprise-grade systems, on any platform that supports the JVM.


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