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This article introduces the relevant knowledge of "what are the advantages of Java language". In the operation of practical cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Java is the most widely used object-oriented programming language in the world. Java language has two characteristics: powerful and easy to use. As the representative of a series of object-oriented programming languages, Java perfectly implements the object-oriented theory and allows programmers to do complex programming in an elegant way of thinking.

What exactly does Java do?

Specific application fields of Java technology

1. Android phone App

Almost all App applications in our Android phones (such as pay-Bao / WeChat / Amoy-Bao, etc.) are written in Java. Android was already the largest mobile operating system in the world a few years ago, and now many Java programmers are Android application developers.

two。 Software for all kinds of banking and financial industries

Java is the most powerful in the banking and financial industry. Many global investment banks, such as China Merchants Bank, use Java to write front-end and back-end electronic trading systems, settlement and confirmation systems, data processing systems and others.

3. All kinds of large websites

Java is also the most powerful on e-commerce and large websites, which is developed in Java.

4. Various tools and softwar

Most of the widely used software and development tools are developed in Java language, such as QQ, wx,Eclipse, InetelliJ and Netbans IDE.

5. Payment and fee transaction software

Third-party paid trading software is also mostly written in Java. For example, Murex this software, widely used in many bank connections, is written in Java.

6. Scientific application program

Scientific applications use Java programming by default, mainly because Java is safer, lighter and easier to maintain, and Java is equipped with better concurrency tools than any other language.

7. Big data's technology

At present, the popular big data technology is also using Java development, such as Apache Java-based HBase and Accumulo (open source), as well as ElasticSearch and other projects.

8. Embedded field

Java also occupies a very large share in the embedded field, because we only need 130 KB of space to use Java to implement all kinds of smart cards and sensors.

Why choose to learn the advantages of Java?1. Java language

1. Simple and easy to learn

Java is a development language that is very easy to understand. There are less than 100English keywords commonly used in Java development. English proficiency above senior high school can be competent for Java development, and there are almost no requirements for mathematics.

In addition, Java learning materials are the most, there are many online learning platforms provide free Java video courses, with these learning materials, the entry is very simple.

two。 Cross platform

Cross-platform is the biggest advantage of Java over other languages. Java only needs to be written once to run on systems such as windows,mac,linux.

3. Safety

The software developed by Java is very safe and will not cause memory leakage due to the existence of pointers and so on.

4. Multithreading

Java has built-in support for multithreading. Unlike other languages that do not support multithreading, it needs to call the multithreading function of the operating system to complete multithreading.

5. There are rich class libraries.

Java has a history of more than 20 years since it was released, and there have been many excellent open source communities, such as Apache and Spring, while there are not as many other open source communities as Java. Using these open source projects, we can easily implement Java project development.

High freshness of 6.Java language

Since the official release of Java 9 on September 21, 2017, Oracle has announced that it will update Java every 6 months. In this way, Java will always meet the latest development needs.

7. So as to find a job.

There are a large number of enterprises are using Java for development, such as OA, mailboxes, stocks. Tickets, gold. Finance, examination, logistics, medicine. Medical, mining, shopping malls, financial and other information systems, which means that the Java job is easier to find.

2. The programming status of JAVA language

Java language has always been the leader in the field of programming and the first choice of programming technology.

2.1 the latest ranking of TIOBE programming language communities in 2019

The TIOBE programming language community ranking is an indicator of programming language trends and is updated every month. Java,C and C++ have been in the top three for nearly 20 years, far ahead of other programming languages and unshakable.

2.2 trend of mainstream programming languages over the past few years (since 2002):

Java has remained at the top of the TIOBE programming language rankings 83 times in 24 years!

3. Recruitment demand and salary level of Java programmers

At present, the shortage of Java engineers is 300000, and the average daily recruitment is 20000.

Due to the deep application of Java in the field of big data, the demand for talents will double in the next 3-5 years.

4. Career development plan for Java programmers

After learning Java programming, which positions can you be promoted to in the future?

Technical Java talents: junior engineer-> Intermediate engineer-> Senior engineer-> architect-> Technical Director-> CTO

Managerial Java talents: software engineer-> Project Leader-> Project Manager-> Project Director-> Technical Director-> CTO

Cross-Java talents: junior engineer-> Intermediate engineer-> Project Manager-> Technical Director-> CTO

Mixed Java talents: engineer-> product manager, designer, salesperson, operation, etc.

5. The unique position of Java technology

1 ️. The object-oriented language has the longest history, the most mature and stable.

2 ️trees. Firmly ranked first in the list of programming techniques.

3 ️trees. The vast majority of companies' server projects use Java technology

4 ️trees. Has a large number of Java open source projects.

How to choose each major in the field of IT?

In the field of IT development, there are Java,PHP, mobile development, UI, testing, operation and maintenance, Unity game development, Python,H5 and other technologies, as a rookie how to choose?

1. Java Software engineer:

Java software engineers mainly use Java as a development tool to complete the software program design, development, testing, maintenance and upgrading of software products, and write websites and App.

Java as a back-end technology, involves a lot of technical points, including front-end H5, database, Linux operation and maintenance, network security, architecture, server and other technical directions, so students need to have a certain logical thinking ability, entry is not very easy, but once started, and then learn other technologies easily, remember one sentence: from the back-end to the front-end is simple, from the front-end to the back-end is difficult!

Average salary range for Java development engineers:

1-3 years: 10K~15K

3-5 years: 15K~30K

5-10 years: 30K~70K

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