What is Java?
Java was released by Sun Microsystems in 1995. Java is a cross-platform, object-oriented programming language. We shall now comprehend each of these features of Java in detail.
Java is a cross platform language and by that we mean that the program’s source code is compiled into an intermediate “bytecode”. The bytecode is then executed by the JVM (Java Virtual Machine) which is the Java interpreter. This bytecode with the Java Virtual Machine would be executed in the same manner on all hardware platforms.
Another feature mentioned is that of object-oriented. Java is an object-oriented programming (also called OOP) language because it follows all the principle of an object-oriented language. Applications written in Java language are based on declaration of classes, creation of objects and the interaction between these objects. We would now understand each of the basic principles of Java or any other object-oriented programming language in brief. The basic principles of object oriented language are -
Inheritance is the name given to the concept when the child class derives properties and methods from the parent class. There are various types of inheritance in Java.
Next feature in line is encapsulation. This feature refers to the property of wrapping up of data together as a single unit. Encapsulation lets you hide the variables of one class from other classes. The variables of one class can be accessed from the method of that class only. Encapsulation is also called data hiding.
Abstraction is another feature of OOPs. Abstraction lets you hide certain details and show only the relevant and necessary information. Abstraction is an important factor for security of any application.
Polymorphism is the last feature we would discuss. The word polymorphism basically means many forms. In programming language, polymorphism is the ability of an object to take on many forms. In programming language, if a method acts differently based upon the object, it is called polymorphism. It is an important concept of object-oriented programming language.
Java is an open source language with a strong community support and over a million repositories on platforms like Github. It supports a number of frameworks like Spring, Struts and Hibernate. These frameworks and their regular updates make Java an interesting language to learn. It is mostly used to make server-side web applications.
Java remains so popular because it is cross platform, easy to learn and has a strong memory management system. Many developers start their journey by learning the basics of computing, data structures and algorithm in the Java language because it creates a strong foundation for your career as a developer.
Companies like HCL, Wipro, Capegemini, Tech Mahindra and a lot others use Java to build strong, robust applications with top notch security and high performance.
- Firstly, it is now used at the server-side also. Nodejs is a framework which is used for server-side web development.
- React vr is another interesting thing that has emerged which is used to make virtual reality applications.
Both the languages are quite similar when it comes to the learning curve. In order to learn Java, you need to have a strong foundation of OOP’s concept and basic programming skills. There are various documentations, online tutorials and courses and community support to make you learn Java and build various applications on it.
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