Java Architecture

What are the components of Java Architecture?

Vidhya Post in Education

Introduction

The compilation and interpretation processes are combined in Java Architecture. It describes the many steps taken when creating a Java programme. Let me give you a little overview of the blog’s schedule before I get started on the issue.

Let’s discuss Java Architecture clearly.

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How does Java Architecture work?

Here, I’ll give you a step-by-step explanation of the Java architecture.

  • There is a compilation and interpretation process in Java.
  • The Java Compiler transforms the Java code that has been written into byte codes.
  • The JVM then transforms the bytes into machine code.
  • The machine runs the Machine code immediately.

Java Architecture Components

JVM, JRE, and JDK are the three primary parts of the Java language.

Java Development Kit, Java Virtual Machine, and Java Runtime Environment, respectively.

Virtual Machine for Java:

Have you heard about WORA? Run anywhere after writing once. Because they can execute code on any platform, Java applications are known as WORAs. JVM is the sole reason this is done. The JVM is a part of the Java platform that offers an environment for running Java programmes. The Java Virtual Machine (JVM) translates the bytecode into machine code, which is then executed on the computer.

JVM carries out the following tasks:

  • code is loaded
  • checks the code
  • carries out the code
  • gives a running environment

JVM architecture

Class Loader: A component of the JVM is the class loader. Class files are loaded via it. The class loader loads the Java programme first whenever we start it.

Class method area: This is one of the JVM’s data areas where class information is stored. This region stores static variables, static blocks, static methods, and static instance methods.

Heap: When the JVM first launches, a heap is produced. As the application runs, its size could grow or shrink.

Stack: A thread stack is a JVM stack. It is a data region that is created for a single work thread in the JVM memory. A thread makes use of the JVM stack to store a variety of things, including local variables, partial results, and data for method calls and returns.

Native stack: All native methods used in your programme are incorporated into it.

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Engine of Execution:

  • JIT compiler
  • Garbage collector

JIT compiler: The runtime environment includes the Just-In-Time (JIT) compiler. Java applications’ performance is boosts by converting bytecodes to machine code at run time. The JIT compiler is turn on by default. When a method is compile, the JVM directly invokes the method’s compiles the code. The JIT compiler converts the method’s bytecode into machine code “just in time” for execution.

Garbage collector: As implied by the name, a garbage collector is someone who gathers trash. Well, garbage collection is what handles this work in the JVM. It keeps track of every item that is present in the JVM heap space and gets rid of any that are unnecessary.

Mark and Sweep, the two straightforward steps in the garbage collector’s process

  • Mark: It is where the trash collector determines which memory blocks are being used and which are not.
  • Sweep: it gets rid of the items that were marked during the “mark” stage.

Conclusion

I’m getting almost to the end of this blog on Java Architecture now. I hope the concepts listed above help you learn more about Java. Now that you have a basic knowledge of Java architecture and components. 

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