Java Meaning & Definition

Java is a general purpose, high-level programming language first released by Sun Microsystems in 1995. It is designed to have as few implementation dependencies as possible, is free to use, and can run on all platforms. It is concurrent, class-based, and object-oriented. Simply put, Java is a computing platform where users can develop applications.

Java is similar to C++ but is simplified to eliminate language features that cause common programming errors. The source code files, meaning files with a .java extension, are compiled into a format known as bytecode, which are files with a .class extension. This can then be executed by a Java interpreter. Bytecode can be directly converted into machine language instructions by a just-in-time compiler.

Components of Java

There are three main components of the Java programming language:

  • Java Virtual Machine (JVM): JVM is an engine that provides a runtime environment to drive the Java code or applications. It is the center of the programming language and performs the operation of converting Java bytecode into machine language. It provides numerous libraries, frameworks, and tools.

  • Java Runtime Environment (JRE): JRE is a runtime environment that is required to execute Java programs and applications. If a user wants to run a Java program in their machine, they must have JRE installed on the machine. It’s platform dependent, meaning the JRE installed must be compatible with the user’s operating system and architecture.

  • Java Development Kit (JDK): JDK is the core component of the Java environment. It contains JRE along with Java compiler, Java debugger, and other classes. It’s used for Java development to provide the entire executables and binaries as well as the tools to compile and debug a Java program.

Benefits of Java

Java is easy to learn. The language does not require any prior knowledge of basic programming language. Unlike other programming languages including C++, when Java is compiled, it is not compiled into a platform-specific machine. This means a program compiled on one machine can be easily executed on any other machine without making any changes.

Java is multithreaded, meaning multiple tasks can be handled simultaneously and users can construct interactive applications that run smoothly. With its secure features, virus-free, tamper-free systems can be developed. Authentication techniques are based on public-key encryption.

Top Java Related Questions

1. What is Java IDL?

2. What is a Java applet?

3. What is JavaBeans?

4. What is JavaScript?

5. What is JDBC (Java Database Connectivity)?

Abby Dykes
Abby Dykes
Abby Dykes is a newly-graduated writer and editor for websites such as TechnologyAdvice.com, Webopedia.com, and Project-Management.com. When she’s not writing about technology, she enjoys giving too many treats to her dog and coaching part-time at her local gym.

Top Articles

The Complete List of Text Abbreviations & Acronyms

From A3 to ZZZ we list 1,559 text message and online chat abbreviations to help you translate and understand today's texting lingo. Includes Top...

How to Create a Website Shortcut on Your Desktop

This Webopedia guide will show you how to create a desktop shortcut to a website using Firefox, Chrome or Internet Explorer (IE). Creating a desktop...

Windows Operating System History & Versions

The Windows operating system (Windows OS) refers to a family of operating systems developed by Microsoft Corporation. We look at the history of Windows...

Hotmail [Outlook] Email Accounts

By Vangie Beal Hotmail was one of the first public webmail services that could be accessed from any web browser. Since 2011, Hotmail, in terms...

No-Code Development Definition &...

No-code development is a method of application development that allows people without programming...

Trusted Device Definition &...

A trusted device is a machine, such as a mobile phone, laptop, tablet...

What Is a Columnar...

A columnar database management system (CDBMS) is a type of database management system...