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JulWhat is Java? A Beginners Guide to Java
Beginners Guide to Java: An Overview
What is Java?
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History of Java
Why Use Java?
How does Java work?
- Java code is created using a Java Development Kit (JDK) that is compatible with Windows, Linux, and macOS.
- Programmers use the Java programming language, which the JDK converts to computer-readable code.
- The JDK includes a compiler that translates high-level Java code to bytecode, which is readable by a variety of devices.
- A Java Virtual Machine (JVM) interprets bytecode.
- JVMs may run on a variety of software and hardware platforms, making Java programs portable.
- JVMs load, verify and provide a runtime environment that allows Java code to be executed properly.

Editions in Java
Java Standard Edition
Java Micro Edition
Java Enterprise Edition

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Java Concept
Java primarily depends on the features of object-oriented programming. This programming language assists in simplifying the development of the application and software as well as maintaining some concepts which will be discussed further
- Object: An object is an entity of object-oriented programming that has a particular behavior and a definite status. Class and object in Java are some of the most essential features of Java.
- Class: a class stands for a collection of various objects. To create an object, the class needs to generate some blueprint for it. The class assists in organizing the codes for a particular program.
- Constructor: It seemingly worked as a method, but it is a class name and does not have or return any value.
- Inheritance: in this concept, one particular class needs to have the properties and behavior of their parents' class.
- Polymorphism: Polymorphism is the concept of performing a particular task in various ways. Sometimes programmers use the same, particular word but it means different based on the platforms and contexts.
- Abstraction: this feature in Java shows the relevant and essential details of the task and hides the internal details.
- Encapsulation: as a capsule, this Encapsulation method helps to bind the data and code together.
Java's Component
The Java programming language has three main components, which include:
- JVM: The Java Virtual Machine (JVM) is a platform-independent Java component that offers an environment for running Java programs. So, the JVM loads the code, validates it, runs it, and offers a runtime environment.
- JRE: The Java Runtime Environment, or JRE, creates an environment in which Java files can run and execute. It is a software bundle that includes the Java Virtual Machine (JVM), Java class libraries, and the Java class loader.
- JDK: The Java Development Kit, or JDK, is a software development environment that is used to create Java programs and applets. It is a superset of JRE. The JDK offers a private JVM and a few other tools for completing the construction of a Java program.
Features of Java
- Java is object-oriented, which allows for the versatile modeling of real-world entities.
- Java's simple syntax, which is similar to C++, makes it easy to learn and use.
- Java compiles to bytecode that can run on any platform that supports the JVM.
- Distributed applications can be built and deployed.
- Bytecode is platform-independent, allowing it to be executed on any JVM-enabled system.
- Enables secure application development by including security measures.
- Code is compiled into bytecode, which is then interpreted by the JVM for improved portability and security.
Java Setup for Windows
- First, download the Java application for Windows
- Install the application on Windows
- Run the file
- Try to configure the "Installation Wizard".
- Set the environmental variables in Java programming
- Test if it is installed correctly
Java QuickStart
Summary
FAQs
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