Java is one of the most popular programming languages in the current market. It powers every type of application from enterprise software systems to Android apps. Learning Java can be a good career option for those who have an interest in it. People who have mastered the art of developing software in Java are the contender for high-paying jobs available in the market.

Java: A Programming Language

A programming language made for developers with a stage ‘write once run everywhere.’ Java applications are compiled to byte code ( that can run on any Java Virtual Machine). Java’s history is very interesting. Java programming language was initially created in 1991. The first public version of Java was launched on May 23, 1995- as the alpha version was available only on Sun Microsystem’s Solaris OS. Since that release, Java has developed into one of the most deployed programming languages in the programming field. It has gained popularity in almost every programming environment, especially enterprise software, server-side Web development, and mobile phone programming.


The Beginning of Java ( 1995)

As we know Java began as an internal project. In 1990, Sun Microsystem started its project. The company was aiming to create a language for programming next-gen televisions & remote controls. Java showed its initial presence in early 1995. In the year 1995, many big names like Toshiba, Mitsubishi, Oracle bought the licenses. At that time, the most important endorsement came from Netscape. It included Java runtime in its free browser. At that time Netscape’s usage share was at almost 90 percent, which indicates Java had put a step forward towards huge success.

A long jump & Bursting bubbles ( 1998-2001)

As time passes, Java becomes more mature, faster. Also, Sun added new features like JIT compiler, collection frameworks, database library & swing graphical APIs. Due to this, runtime grew dramatically in size. Which results in the introduction of Java 1.2 Micro edition in the market. Indeed, J2ME ( Java 1.2 Micro Edition) is a compact runtime for mobile phones.

Numerous centers and the benchmark wars (2001-2006)

As the 2000s were running, the business recuperated from the air pocket and the JCP appeared to be working admirably. Java Specification Requests (JSRs) for the expansion of highlights, for example, IPv6 support, normal articulations, attestations, logging APIs, and new I/O libraries were carried out and delivered in Java 1.4. At that point, things were changing for chip producers. Clock rate bends were smoothing out, and the battle to stay aware of Moore’s Law became overwhelming. In early 2004, Intel dropped its cutting-edge microchip task to zero in on a double center chip. The eventual fate of the CPU was evolving.

An exciting modern lifestyle (2010-Today)

One of the first, and generally famous dialects was JRuby. It took advantage of the described highlights presented by the JVM to add new features to the Ruby language. JRuby was followed by Scala, Clojure, and numerous others. Every language presented highlights that were exceptional in Java. Java was without any doubt still an industry giant. As though to affirm that Sun’s only strength was Java, the organization renamed its stock market as JAVA way back in 2007. The last admirer was Oracle, which bought Sun in June 2009.

Right after the JCP argument about permitting, Sun made the OpenJDK project: a work to execute a genuinely open source adaptation of Java. By 2011, the undertaking had the full help of Oracle, IBM, RedHat, Apple, and others. Then Open-source Java was introduced. Java had its first delivery under Oracle almost two years after Sun’s securing. Java 7 was fairly dull, yet it was the primary Java discharge. This new bytecode guidance upheld technique summons without a trace of static kind data. Java is a statically composed language and couldn’t utilize this guidance in Java 7.

Features of Java

S.O.L.I.D Principles of Java

There are five main principles of Java. They all are different and push Java to do better in development. Here are five principles of Java:

  • S- Single Responsibility Principle

This principle category suggests that every Java class must perform a single functionality. Implementing multiple functionalities in a single Java Class results in code mashup. This principle is mainly focusing on code preciseness & code maintainability.

  • O- Open-Closed principle

The ‘O’ in SOLID’ stands for ‘Open-Closed’. This open-closed term is used to describe extension & modification. It means the Java class should be open for extension and closed for modification. The extension permits the improvement of new features & functionality to the module. 

  • L- Liskov’s substitution principle

Liskov’s substitution principle ensures that any Java class that’s a child ( class A) of a parent ( class B) should be usable in place of its parent class without any unexpected behavior. For example, If class A is a subtype of class B, then we should be able to replace class B with class A without interrupting any issues related to the behavior of the program.

  • I- Interface Segregation Principle

The Interface Segregation Principle indicates that not forcing the client to depends on methods it does not use. In simple words, larger interfaces should be divided into smaller ones. By doing division, we can make sure that implementing classes is only based on the method they are interested in. when you are applying the Interface Segregation principle, smaller interfaces are easier to implement, improving flexibility and the possibility to reuse. 

What Interface Segregation Principle taught us is “Don’t depend on things you don’t need”.

  • D- Dependency Inversion Principle

As the name suggests- it is the principle of dependency. It means high-level modules should not depend on low-level modules. Instead of this both modules will depend on abstraction. The reason is the abstraction does not depend on detail but the detail depends on abstraction.


A simple answer to all of those who asked ‘ What is Java?’ It is a language that was instinctively designed for easy use, functional and secure over the course of more than two decades. It will still continue to remain on top in the world of programming with newly updated features, better performance & flexibility. There are no signs that Java will slow down any time soon. If you haven’t understood – contact us to know more about Java. 

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