Back in 1995, JameGosling designed Java, a highly object-oriented high-level programming language with a class unit. It was designed to be "write code once, use it everywhere.
The first version of Java was released in 1995 by Sun Microsystems (later acquired by Oracle), and as a high-level object-oriented programming language, Java has become one of the programming languages of choice for many programmers to develop and deliver content online. Even in the midst of the historical trend of other programming languages, Java is still alive and well and hasn't gone out of style.
Why is Java still relevant?
Things to be said back then, Java, the language itself is designed to be easier to learn and use than C. It was also one of the first languages to fully support Oriented Directional Programming (ODP). It was also one of the first programming languages to fully support object orientation, and for that reason it quickly gained a large following.
Today, Java is widely used to program a variety of solutions, with millions of web applications and web applets using Java. popular websites such as Linked, Twitter, and eBay use Java extensively, and Google has adopted Java as its primary programming language for developing Android applications.
That means if you have an Android phone, almost all apps are written in Java. The back-ends of large websites such as e-commerce platforms Alibaba, Taobao, and Jingdong are also developed primarily in Java. Large enterprise applications such as large enterprise management systems, CRM systems, ERP systems can also be developed in Java.
Related to communications and network of large enterprises, such as mobile, Unicom, telecommunications, Netcom, related to the financial line of large enterprises, all the banks, securities companies, Internet finance and large-scale management systems, such as supply chain, customer management systems, logistics systems, the main information technology and Java are closely related. So, Java has almost monopolized the development of enterprise-level applications.
With the rise of Internet of Things (IoT), Java has also become a very popular tool for IoT (Internet of Things) development as it provides secure, portable code that can be used anywhere.
The main development language for Hadoop, the most mainstream framework for big data, which is getting hotter and hotter now, is also Java. so it's not hard to see that Java is still the untouchable big brother of industry applications.
The cup of coffee, not only good, but also practical.
Additionally, part of the reason for Java's popularity is that Java source code can be compiled into bytecode, which can be run in any server or client computer that has a Java virtual machine installed. This means that Java programs are platform independent - they can run on many operating systems including Windows, iOS, Linux, and IoT operating systems such as RIOT, Contiki, and FreeRTOS.
In contrast, an iOS program written in C will not work as is on a Windows machine.
And, when there's a lot of work to be done, the benefits of Java's unique platform design become apparent, as Java's use of a virtual machine architecture and its unique JIT compilation model dramatically increases its speed. This is why Java is still one of the most popular languages in the world.
II. An Easy Programming Language to Get Started
Like many popular programming languages, learning Java is relatively easy because of the many resources available. It also has many standard class libraries and a large number of third-party libraries. For C or Java programmers there are integrated development environments (such as IntelliJIDEA) to help them program efficiently.
These IDEs significantly improve the programming experience and provide debugging, an important aid that is important for beginners - there's nothing worse than writing some code but not knowing where the errors are!
Three, with tons of jobs
Java is the third most popular programming language overall, according to a 2018 StackOverflow survey, with 36.3% of those surveyed using it. Many different types of developers use it:
30.7% of full-stack developers use Java16.8% of front-end developers use Java41.6% of back-end developers use Java54.2% of mobile developers use Java
Skills analytics platform Gooroo reports there are great job opportunities in Java, and that in the U.S. every month there are About 17,000 jobs are advertised with an average salary of $100,000. Worldwide, there are about 30,000 jobs advertised each month with an average salary of $90,000.
Certain domestic head Internet companies, 3 years of experience in Java engineers, the monthly salary of up to 30k.
Required to have the following skills:
1, proficiency in Java fundamentals, proficiency in multi-threaded development technology, familiar with the software development process;
2, familiar with mainstream Java open source frameworks such as struts, hibernate, spring;
3, proficiency in HTML/CSS/Javascript/jquery/Ajax;
4, familiar with Oracle/SQLServer/MySQL one of them, and be able to skillfully write SQL and stored procedures;
5, familiar with the Linux system and master Linux commands.