Why should you learn java? You are in the right place to know about it. In this post, we try to explain its importance, demand, job opportunities, positions and more. Let’s start to swim.
The development of the IT arena has brought about a lot of changes and enhancements in programming languages. Java is one such computer programming language that came into existence in 1995. Designed by James Gosling, and developed by Sun Microsystems, Java became an instant hit in the late 1990s and 2000s.
Most of its syntax drives from C and C++. The latest version of Java; Java 10 was released on March 20, 2018. Since its release, there have been many debates regarding the future of Java and its ability to adapt to the requirements of modern programming language.
An average developer knows that there have been talks about Java being a ‘dying language’ and coming into an existence soon. But it is worth understanding the real value of Java and how it might affect your career later in life before calling it quits.
Why should you Learn Java?
In 2018, Java has come into hype mostly for enterprise and Android and also in Niche projects. The newest versions of Java prove to be best amongst the best and center for the modern developers.
In 2016 as well, it was reported to be one of the most popular languages in use with more than 9 million developers clinging on to it. But why is Java so popular among developers? Let’s find out:
- Universal usage
Java is used everywhere around the world. Java has been named the 3rd Most Demanded Skill on Angel list. Many tech giants such as Google, Airbnb, Uber, eBay, or Amazon also use Java to develop the backend of their websites and applications.
It is also because Java has pretty good performance. Java is considered as a big player in the internet of things. Java is currently controlling a lot of things like industrial robots, ATMs, medical devices, and a lot of home appliances. Many startups integrate their apps with Java for good performance through powerful features.
- Object Oriented language
Java is an Object Oriented (class-based) language. If you are able to learn Java you will be able to learn the best practices of object-oriented design. Thus, Java is a flexible, system modular, and extensible programming language.
Since many of the documented Design Patterns use Java as their effective language since Java promotes correct usage. After you understand the design patterns it can drive you to a much more maintainable code.
- Strong development tools
Java has hands down the best IDEs available. When there are bugs, you will be quickly notified of it and also be given suggestions. So it will refactor and reformat your code with perfect explanations and high simplicity.
You might then look back at coding prior to using Java and feel ashamed. These IDEs have led Java to become a top player in the programming language arena. Some of its examples are Eclipse and Netbeans which will not just help you in writing codes but assists you in debugging.
- Easier to Use
Java handles almost all of the complex details of the machine since it is a high-level language. So instead of worrying about the complex little details, you as a programmer can actually look at the coding. So in a way, Java makes it easier for you to use it since it simplifies most of the process.
- Easy Maintenance
Your codes that you write in java will have to be checked for errors before it is built into an app because Java is a statically-typed language.
This also means that the errors can be easily tracked down. Because Java is strict with definitions, the errors are not new and unexpected. So, the codebase is made easier to maintain. The codebase grows in size and complexity.
Since things are more defined in this statically typed language, it makes the entire process faster. The resources of your machine will not be wasted on constantly checking your code’s definition while the app is operating.
- Elevated Performance
The modern Java programs are very nice in regards to performance. The performance can be noted as excellent also because of JIT (just in time) compilers and improved JVMs.
Java program can run faster when you optimize the performance in real time. When the app become larger over time, and it will need to handle more processes altogether, the optimized performance will greatly help.
- Java’s Community
Java is regarded to have the largest community so you can be sure that Java is not going anywhere for a while.
As per a programming Q&A site, StackOverflow, the reports show that Java is the 2nd Largest StackOverflow Community.
Also, it is regarded to be the 4th Largest Meetup Community with around 1.4k Java Meetup groups. The reports show that Java has a total of over 580k members worldwide.
Not forgetting that it is the 2nd Most-tagged Language at GitHub. As reported, the Java projects in GitHub have totaled over 1.5 million which shows strong support and popularity of Java.
- The Future of Java
The future of Java is another reason why you need to pick up this language. Java has been criticized time and again and there are many languages which have tried to replace it.
However, with the release of the latest Java 10 version in 2018, it is sure that Java will continue to stay pertinent and cannot easily go down.
This is also because it has many mature tools and libraries which will not be easy to replace. In the 2015 report by TIOBE Index, Java was the Most Popular Language that year. In the same year, it was reported that the interest in learning Java grew by 22.4％.
- Free and Open source
Java would probably not have earned this huge name if it was not a free and open software. The Java programming language has implemented the open and free JDK.
You do not have to spend any amount in writing an application of Java. Java is platform independent across OS environment. But you need to know Java’s all version and features is not free.
- Rich API
Probably the main reason why anyone would opt for Java programming language is its Rich API. With an extensive set of tools supported by Java’s open source ecosystem, the API will make Java have everything that you ever need while coding.
Features of the Java Language
Relatively, Java is easier to learn than other programming language. That does not mean that it is not as effective, because it gives off clean results. The syntax is easy to grab and is simple, and clean. The following reasons show why Java is simple:
- Its syntax is based on C++ so that makes it easier for programmers to learn Java after completing their C++ course.
- Features such as explicit pointers, operator overloading were very confusing and rarely used, so Java removed it after which it has become very simple.
- Due to Automatic Garbage Collection in Java there is no need to remove unreferenced data.
An object-oriented programming language, everything in Java is an object. So in Java, the software are organized as a combination of different types of objects incorporating both data and behavior.
Object-oriented programming known short as OOPs, is a methodology which makes software development and maintenance very simple by providing some rules. The basic concepts of OOPs are:
- Platform independent
Java is a different language which is why it is known to be platform independent. It is not like C and C++ that are compiled into platform specific machines. Java, once written can run anywhere.
A platform in a program is the hardware or software environment in which it runs. Out of the two platforms i.e. software-based and hardware-based, Java provides the former. So its platform runs on top of other hardware based platforms.
The two components that Java has are:
- Runtime Environment
- API (Application Programming Interface)
The compiler compiles the Java code and converts it into bytecode. The bytecode can be run on numerous platforms thus making it platform independent. So the Java code can be run on various platforms including Windows, Linux, Sun Solaris, and Mac/OS etc. It is a Write Once and Run Anywhere (WORA) platform.
Security is a huge issue in programming languages. While taking about security, undoubtedly, Java is known to be best. A virus-free system can be developed with Java. Java is known best for the security that it provides because:
- It has no explicit pointer
- The Programs operate inside virtual machine sandbox
It is a part of the Java Runtime Environment (JRE). Classloader in Java is used to dynamically load Java classes into the Java Virtual Machine.
This adds high security since the package for the classes of the local file system are seperated those that are imported from network sources.
It verifies the code fragments for illegal code that can violate access right to objects.
It determines the resources a class can access whether it is reading or writing to the local disk.
While these security are provided by java language there are some that can also be provided by application developer through SSL, JAAS, and Cryptography etc.
Java is best known as one of the most powerful programming languages because:
- Strong memory management is used.
- Security problem is cut short since there are lack of pointers.
- The objects that are not being used by a Java application anymore can be gotten rid through the use of automatic garbage collection in java that operates on Java Virtual Machine.
- Java has both exception handling and type checking mechanism which make it robust.
Since there is no implementation dependent features so Java is known to be architecture-neutral. Java uses only 4 bytes of memory for 32 and 64 bit architectures but in other programs such as C programming, int-data type occupies 2 bytes of memory for 32-bit architecture and 4 bytes of memory for 64-bit architecture.
The java bytecode can be carried to any platform thus making Java portable. No such implementation is required.
Java is known best for its high performance feature. It is faster than any other traditional interpreted programming languages.
This is because Java bytecode is very similar to native code. However, the compiled language such as C++ is relatively faster. Java is an interpreted language.
This is reason why it is slower than compiled languages. Thus the key feature of Java is probably that it is very dynamic and supports a dynamic loading of classes and functions from its native languages such as C and C++.
Java helps users to create applications in java which is why it is known to be distributed. The distributed application can be formed through RMI and EJB.
Through this effective feature, the programmers can access files by calling the methods from any machine on the internet.
A thread is basically defined as a separate program, executing synchronously. Java programs can be written with numerous tasks being dealt at once.
This can be done by defining multiple threads. Perhaps the best benefit of multi-threading is that it doesn’t occupy memory for each thread.
A common memory area is used. These threads are vital for multi-media, Web applications etc.
What are job opportunities after learning JAVA?
Java has come into existence since many decades now. As time passes by, the job opportunities coming out of learning Java has also become more in number and has become clearer.
When you become an expert in Java programming, you can be one of the best Java programmers and earn significant name and finance.
2018 has brought a new light to Java related job opportunities. With the release of new versions of Java, the opportunities have also grown.
As per the reports by U.S. Bureau of Labor Statistics, there were projected growth rate of 19 percent for the 2014-2024 period. So you can assume that in 2018, the career prospects for Java programmers are indeed excellent.
As per the reports by Oracle Corporation, by 2006, more than 30000 organizations were customers of its Fusion Middleware digital business platform. Big players such as IBM also began using Java at the time. So Java is not just an undying language but has also seen a constant growth over the years. With appropriate certification and Java related skills, you can be in high demand in the IT world.
Java is used almost everywhere in the present age. Some of the domains where Java is used widely are as follows:
- Java is used in server-side applications in financial services.
- Big Data: Java is used to write the Hadoop MapReduce framework.
- Java is also used in banking to deal with transaction management.
- Java is used to write algorithms in stock market. It helps investors in determining which company they should invest in.
- Even in a retail store or restaurant you can see the billing applications which are written in Java.
- The Android applications are either written in Java or use Java API.
- In the Scientific and Research Community there are huge amount of data that need to be dealt with. It can be done through Java.
Job positions after learning Java
- Junior Programmer
This is the base level position after you finish your Java course. You will work as a junior programmer for the first 3-4 years of your career or as much capable as you are.
You will have the responsibility of coding, debugging, and participating in code reviews. You will also have to indulge in technical documentation.
During this stage you will learn more about the Java ecosystem and getting certified in one or more areas.
- Senior Programmer
With each new step you will gain more experience, knowledge and will also get certification. You will eventually get the role of a senior programmer.
Your responsibilities will increase by a level. As a senior programmer, you will have to mentor your junior programmers and will also have to involve in the overall design and implementation of the software.
You will not just be included in coding but will also have the role of facing the customer by training the users of your software. You will have to transition into a more managerial track. You will have more education and certifications leading to the same.to lead you through the position.
You will have already had more than 10 years of experience by this time. In this architect level position you will not just have to deal with the software but with your clients and potential customer as well.
You will have to collect and analyze the requirements, and responsibility for the overall architecture of the system so as to conform to the needs of your client. You will have to interface with the upper management and take on a managerial role.
This is the highest level that you will go after learning Java. You will already have some training and certification on management. You will have to take care of the software delivery. Not just that, you will also have to look for the financial management and budgeting, and interfacing with senior management.
Job opportunities after learning Java
Many industries use java so it is applicable almost everywhere. The job opportunities in enterprise, after learning Java are the following:
- back-end Developer:
The main work of a backend developer is to write codes for the back-end servers. It includes web servers, database servers, and application servers. It is very much in demand and is most widely known at present.
You are required to have not just the core Java platform knowledge, but also be good in EJBs or Enterprise Java Beans, spring which is used in many organizations, Hibernate which is used for persistence, SQL which is necessary in many projects, JSP and Servlets which take care of the web server stack, and REST services which are used to expose an API to the web service.
- Big Data Developer:
As per the name, a Big Data Developer has to specialize in working with large datasets. The career of a Big Data Developer is very fast-growing since many companies are looking to leverage large data sets for business intelligence and decision making.
As a big Data Developer you will have to have the knowledge of working with Hadoop. Hadoop is first platform to bring Big Data to the masses, Spark, Pig which is a language for writing big data processing jobs, and MapReduce which is the technology underlying processing big data.
- Android Developer:
Since android is based on Java, you will have to know the basics of Java for becoming an Android Developer. Java is vital for you to excavate this platform.
When you are not just an expert in Java but also in Android, your job opportunities will be very high. Your value in the market will also grow.
For every company wanting to become a big player in the market, they need some kind of web presence or e-commerce offerings so they must have an Android (and iOS) application to remain relevant.
- Embedded Devices Developer
Since java is used everywhere from routers to network applications and entertainment centers, so Embedded Devices Developers are available everywhere. This niche career path has a lot of opportunities.
Java has been and is being used by almost all of the leading software companies around the world. Java is used for developing enterprise applications, online apps and software applications.
If you have the experience, training, and certification, then undoubtedly you will be paid more in the time to come. You can become a Software Developer, EJB Programmer, Web Programmer, Application Developer, and Web developer after you Learn Java.
You can easily climb on the top of the ladder in the field if you have the enthusiasm and knowledge. From being a project manager to s Senior Programmer, and Architect, there are various positions that one can fill.
You can get competitive salary and even at times demand your own salary range if you are exceptionally talented at coding. The demand for Java programming language developers is very high at present.
It can be easily said without a doubt that becoming a java developer is rewarding. From mobile phones to cloud computing servers, Java is needed anywhere.
You can fill the space in large organizations demanding high pay if you are highly talented. Java is still a growing language which will continue even after many years.