This determines that industry, agriculture, finance, military, education, medical care and other industries are introducing and cultivating a large number of application software talents to improve the degree of automation.
Java software engineers have been in the business for 65,438+0-3 years, and their annual salary reaches 65,438+00-65,438+05. The more experience they have in the IT industry, the higher the salary.
This is also the reason why many college students choose to switch to IT. What can they do after learning Java? Computer training will sort out what they can do after learning Java.
Android application
If you are still looking for a place for Java, you don't have to look everywhere, it is right beside you.
Turn on the Android phone and open an App casually. They just use the Java language completely, and search the API document of Android from Google, and you will find that it is strikingly similar to the JDK document of Java.
Since Android just started two years ago, many Android applications are now developed by Java programmers and developers. Although Android uses different JVMs and different encapsulation methods, the code is still written in Java language.
Server program
Java is widely used in financial services industry. Many multinational investment banks, such as GoldmanSachs (Goldman Sachs), Citigroup (Citigroup) and Barclays (Barclays Bank), have written front-end and back-end electronic trading systems, settlement and confirmation systems, data processing projects and other projects in Java.
In most cases, Java is used for server-side development, but most of them have no front end. They usually receive data from one server (upper layer), process it and send it to another processing system (lower layer).
Website domain
Similarly, Java occupies most seats in the fields of e-commerce and website development. You can use many different frameworks to create web projects, such as SpringMVC, Struts2.0 and frameworks.
Even simple servlet, JSPs and struts-based websites are very popular in government projects. For example, the websites of different departments such as medical care, insurance, education and national defense are all developed based on Java.
software tool
Many commonly used software and development tools are written and developed in Java.
Such as Eclipse, IneteliJIdea, NetbansIDE
transaction system
Third-party trading systems are now a large part of the financial services industry, and they are also written in Java.
For example, Murex, a popular trading platform now, is also written in Java, which interfaces with many bank foreoffices and provides services.
J2ME system
With the appearance of IOS and Android in recent years, it almost occupies the J2ME market, but there are still low-end Nokia and Samsung mobile phones using J2ME.
Most mobile games and applications in this era are written in MIDP and CLDC (a part of J2ME) to adapt to the Android system.
But J2ME is still very popular in the fields of Blu-ray, magnetic cards and set-top boxes.
Communication applications are so popular because Nokia's mobile phones still support J2ME.
Embedded domain
Java has a great development space in the embedded field. On this platform, you only need 130KB to use Java technology (on smart cards or sensors).
Initially, Java was designed for embedded book devices.
In fact, this is just one of the areas. This is just a project of "write once and swim casually" at the beginning, and now it looks like this.