What is a java programmer

JAVA programmers broadly refer to a group of software developers who rely on JAVA as a means of livelihood. In a narrow sense, it refers to programmers with JAVA certification from SUN Company. Sun Java certification is divided into two levels: Sun Certified Java Programmer and Sun Certified Java Developer. Programmers are usually required to be proficient in Java basics, Java advanced programming, and common Java design patterns, and have an in-depth understanding of the MVC programming model and UML-related knowledge.

Historical development

According to relevant data, currently, my country’s demand for software talents has reached 200,000. And it is growing at an annual rate of about 20%. In the next five years, the demand for qualified software talents will far exceed the supply. In 2005, the shortage of software talents in my country reached 425,000, of which Java programmers and Java engineers are the most lacking.

According to IDC statistics, among the demands for all software development talents, the demand for Java programmers accounts for 60% to 70% of the total demand. At the same time, the salary of Java programmers is relatively high. Generally speaking, it is a normal salary level for engineers with 3 to 5 years of development experience to have an annual salary of 100,000 yuan. 80% of the students’ annual salary exceeds 50,000 yuan after graduation.

At present, although the salary of JAVA talents is very high, it is difficult for IT companies with strong demand for such talents to recruit qualified JAVA personnel. Among them, the most fundamental reason is that many computer major graduates did not master practical skills and experience during their studies, and there is a large gap between them and the actual employment needs of enterprises. Therefore, the most convenient way for college students majoring in computer science to become Java programmers is to participate in JAVA vocational skills training that uses practical projects as the main teaching method, thereby effectively shortening the gap with the specific employment needs of enterprises.

There are 2.5 billion Java devices running Java in the world, more than 4.5 million Java developers are active in every corner of the earth, and tens of millions of Web users experience the power of Java every time they go online. Today, Java runs on 708 million mobile phones, 1 billion smart cards, and 700 million PCs, and provides a powerful platform for 28 compatible application servers. So many applications have completely changed users' lives. More and more companies have improved their production efficiency because of the use of Java. In China, more and more users are reducing costs and enjoying life because of Java.

Dr. James Gosling, Vice President of Sun Corporation, Academician of Sun Research Institute, and Chief Technology Officer of the Software Department, is world-famous as the "Father of Java Technology". As an academician of Sun Research Institute, he personally designed the Java language and completed the original compiler and virtual machine of Java technology. Under his leadership, Java has now become the standard programming model of the Internet and the de facto standard for distributed enterprise-level applications. Its cross-platform technical advantages have brought epoch-making changes to network computing. In the 11 years since its official launch in May 1995, Java has developed from a programming language to the world's largest general-purpose development platform. Java technology has been adopted by major companies in the computer industry and has also been accepted by an increasing number of international technology standardization organizations. In 1999, Sun launched three major platforms: J2EE, J2SE and J2ME with the Java2 platform as the core. With the rapid advancement of the three major platforms, a huge wave of Java applications has formed in the world.

As the only language developed on the Internet, the Java platform is sought after for its mobility, security and openness. According to IDC, the value of IT products using Java will double in the next five years starting from 2001, reaching US$453 million in 2006, with an annual growth rate of 14.9%. As of May 2003, there were more than 3 million registered Java developers, and JRE (Java Runtime Environment) had been downloaded 72 million times. Dr. James Gosling predicts that the number of Java technology developers will grow to 10 million within 3 to 5 years. Wireless Java is also climbing rapidly.

According to Sun Vice President James Gosling, Sun has just formed a technical alliance with China Unicom and Zhenrong Rongtong Company, and will use the "UniJa" brand to further promote wireless applications and services of Java technology. Mobile phone manufacturer TCL has also obtained a license for the mobile version of the Java2 platform, allowing China Mobile users to use new TCL mobile phones based on Java technology. There are currently 120 million mobile phones using Java technology in the world, and more than 70 operators around the world have launched more than 200 different types of mobile phones based on Java technology.

Dr. James Gosling recently pointed out, "In just ten years, the Java community has grown into a group of millions of people who use their intelligence and collaborative efforts to make Java a reality." This future coolest technology has made a huge contribution. So, how far will Java develop in the next ten years? Only the developer group that has made Java develop to what it is today is qualified to answer this question. We believe that, The development of Java will take us to a more exciting future. The future of Java is brilliant!"

Java's cross-platform and many other features make it the fastest-growing software product in modern times: it is supported by approximately 150 licensing agencies, 200 universities and 500,000 developers; more than 1,000 applications use it written; there are over 800 books written about it; the Java Development Kit has been downloaded over 1 million times; the Java BEANS® Development Kit has been downloaded over 100,000 times; it is supported by all major computer manufacturers in the world, and all of this All occurred within 800 days of its publication; Java's break into the heart of enterprise computing is becoming a driving force in mass media opinion and changing the enterprise computing environment. It transforms commerce itself by providing a secure and robust platform for Internet commerce. Java Computing is a trusted enterprise solution across a variety of industries. A platform-independent Java computing environment can reduce an enterprise's total costs, shorten product time to market, and safely expand the company's network. When many countries seek partners in China, they regard the ability to program in Java as a prerequisite for cooperation.

With the widespread application of Java technology in all walks of life, companies have increasingly higher requirements for Java talent recruitment. As the most professional Java training base in the northwest region, Xi'an Shangxuetang has not only established a good reputation among college students in recent years, but has also won the favor of more and more students with its dedicated and high-quality teaching. Beijing java private school pays more attention to JAVA programming thinking combined with the future trend of actual development projects

For Java, 2010 is an extraordinary year. Oracle completed the acquisition of Sun at the beginning of the year, which made everyone aware of the future of Java. It is full of attention, and the JavaOne conference held in Beijing in December can be said to be Oracle's first official conference after acquiring Sun. You can learn more about the future development of Java from JavaOne. And 2011 will be a new beginning for Java.

Java has gone through its 15-year journey. It is not young in the ever-changing field of IT technology, but it has never stopped changing and innovating. Java is no longer just a computer language. In many cases, we call it a platform and a community. The following looks forward to the development of Java technology in 2011 from the aspects of Java SE, Java EE, Java ME, and JavaFX.

The above is the detailed content of What is a java programmer. For more information, please follow other related articles on the PHP Chinese website!