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Keerthiga P
Keerthiga P

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History of Java,Architecture of Java and Java Server Provider Companies

#java #beginners

1.The History of Java:

🌱 Beginning

Java was created in 1991 by James Gosling at Sun Microsystems.
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Originally, it was called Oak and was designed for small devices.

🔄 Name Change

In 1995, Oak was renamed to Java.
At the same time, the internet was growing, and Java became perfect for web development.
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🌐 Why Java Became Popular?

Java introduced the idea:

👉 “Write Once, Run Anywhere”

This means Java code can run on any system using JVM (Java Virtual Machine).

🏢 Big Change

In 2010, Oracle Corporation bought Sun Microsystems and took control of Java.

🚀Today, Java is used in:

  • Web development
  • Android apps
  • Enterprise applications

2.Architecture of Java:
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🧱 What is Java Architecture?_

Java architecture is the process that explains how a Java program is compiled and executed. It is designed to follow the concept:

👉 “Write Once, Run Anywhere”

This means Java code can run on any system without changing the program.

🔄 How Java Works?

The working process of Java is simple:

  • You write code in a .java file
  • The compiler (javac) converts it into bytecode (.class)
  • The JVM (Java Virtual Machine) runs the bytecode
  • Output is generated

⚙️ Main Components of Java Architecture

🔹 JDK (Java Development Kit)

JDK is used by developers to write and compile Java programs. It includes tools like the compiler.

🔹 JRE (Java Runtime Environment)

JRE provides the environment to run Java programs. It includes JVM and necessary libraries.

🔹 JVM (Java Virtual Machine)

JVM is the heart of Java. It converts bytecode into machine code and executes it.

🧩 Inside JVM

JVM has important parts:

  • Class Loader – Loads the class files
  • Memory Area – Stores data (Heap, Stack)
  • Execution Engine – Runs the program
  • Garbage Collector – Removes unused memory

✨ Why Java Architecture is Important?

  • Platform independent
  • Secure and reliable
  • Automatic memory management
  • Better performance using JIT

3.Java Server Provider Companies:

🌍 Cloud & Hosting Providers

🔹 Hostinger

 Hostinger is a popular hosting provider. It offers VPS hosting that supports Java applications like JSP and Servlets. It is beginner-friendly and affordable.
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🔹 Jelastic

Jelastic is a cloud platform specially designed for Java developers. It supports modern technologies like Docker and Kubernetes.
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🔹 RackBank

RackBank is an Indian hosting provider. It offers reliable Java hosting with good support and performance.
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🔹 Javapipe

Javapipe provides dedicated Java hosting. It supports frameworks like Spring and Hibernate.
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🖥️ Java Application Servers

🔹 Apache Tomcat

Apache Tomcat is the most widely used Java server. It is mainly used to run web applications.
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🔹 JBoss (WildFly)

JBoss is an enterprise-level server used for large-scale applications.
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🔹 GlassFish

GlassFish is a Java EE server used for developing and testing applications.
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🧠 Why Do You Need a Java Server?

  • To run Java web applications
  • To host websites and APIs
  • To manage backend services

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