Java Language Tutorial

Java is a powerful general-purpose programming language. It is used to develop desktop and mobile applications, big data processing, embedded systems, and so on. According to Oracle, the company that owns Java, Java runs on 3 billion devices worldwide, which makes Java one of the most popular programming languages.

Java was developed by Sun Microsystems (which is now the subsidiary of Oracle) in the year 1995. James Gosling is known as the father of Java. Before Java, its name was Oak. Since Oak was already a registered company, so James Gosling and his team changed the name from Oak to Java.

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Frequently Asked Question

Java is a widely-used programming language for coding web applications. It has been a popular choice among developers for over two decades, with millions of Java applications in use today. Java is a multi-platform, object-oriented, and network-centric language that can be used as a platform in itself.

There are four platforms of the Java programming language:
  • 1. Java Platform, Standard Edition (Java SE)
  • 2. Java Platform, Enterprise Edition (Java EE)
  • 3. Java Platform, Micro Edition (Java ME)
  • 4. JavaFX.
 
 

API (Application Programming Interface) in Java is a set of predefined rules and specifications for accessing a web-based software application or web tool. It offers a way for developers to interact or integrate two different systems, allowing for easy exchange of data and communication.

A REST API (also known as RESTful API) is an application programming interface (API or web API) that conforms to the constraints of REST architectural style and allows for interaction with RESTful web services. REST stands for representational state transfer and was created by computer scientist Roy Fielding.

Spring is a lightweight framework that offers an elaborate environment for robust programming and configuration model for Java-based applications. Spring Boot is a java-based framework that is best for creating stand-alone, Spring-based applications in a short period.

A Java framework is the body of predefined codes used by programmers to develop applications on the web. These frameworks in Java development are classes and functions that control hardware, process input, and communicate with system applications.

Microservices are an architectural approach to building applications that are distributed and loosely coupled so that a change in one microservice won’t break the entire app. This lets development teams rapidly build new application components to meet changing business needs.

Hibernate is a Java framework, licensed under the open-source GNU Lesser General Public License (LGPL), and is available for free download. Developed in 2001 by Gavin King, Hibernate was introduced as a groundbreaking alternative to the EJB2-style entity bean approach.

Object-relational mapping (ORM) is a technique that connects programming code with relational databases. It uses metadata descriptors to create a layer between object-oriented program (OOP) code and the database.

What is Java Spring Boot? Java Spring Framework (Spring Framework) is a popular, open source, enterprise-level framework for creating stand-alone, production-grade applications that run on the Java virtual machine (JVM).

The Just-In-Time (JIT) compiler is a component of the runtime environment that improves the performance of Java™ applications by compiling bytecodes to native machine code at run time.

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