How to learn java language well?

How to learn Java language well: 1. Learn the basic principles of computer composition, data structure, network introduction, tcp/ip protocol and other basic computer knowledge; 2. Master the basic knowledge of Java (object-oriented, polymorphism , inheritance, encapsulation, exception handling mechanism, etc.); 3. Learn web and mainstream java frameworks to develop websites; 4. Continuously learn new knowledge and improve technology.

Advantages of Learning JAVA

Java remains one of the most popular programming languages ​​in the world, with unlimited There are many ways to use Java. According to 2016 data, Java is rated as one of the most popular programming languages. Java salaries are relatively good, and the latest reports prove that Java programmers are among the highest-paid programmers in the industry. According to the analysis of global digital business media organizations, having Java skills is conducive to job appreciation and salary increase. The market for Java programmers is in short supply, and employers have high demand for Java programming skills.

Java is a widely used programming language with a huge customer base. Java is everywhere and has huge potential. It is estimated that more than 3 billion devices worldwide run Java, more than any other language.

Java has broad development prospects. JAVA language is widely used by major websites around the world. Java is especially suitable for developing enterprise applications in almost any industry. Java is a very good foundation language. It is a language that students with zero foundation and weak foundation can easily accept.

How to learn Java well?

1. Learn basic computer knowledge

Learn the basic principles of computer composition, data structure, network introduction, tcp/ip protocol, etc. Understanding this knowledge can reduce a lot of burden in later Java learning.

2. Basic knowledge of Java

Learn the three basic characteristics and five basic principles of object-oriented (the first thing I asked when I asked my seniors to take the test), object-oriented, and process-oriented , what is polymorphism, what is inheritance, what is encapsulation. Collection collection, List collection, Set collection, Map collection.

Exception handling mechanism and application in Java, custom exceptions. File class, character stream, byte stream, conversion stream, buffer stream, recursion. network programming. Thread life cycle, Java thread pool, thread synchronization issues, thread deadlock issues, etc. After studying the above content, you should have a certain understanding of Java. You can use the Java language to write some simple programs and use the simplest editor.

3. Learn the web front-end

After learning the basics of Java, start learning the web front-end, which mainly includes front-end pages (HTML/CSS/JS), Servlet/JSP, and Mysql related knowledge. Learning the Servlet/JSP part is also a part that Java back-end development must be very proficient in. When learning these three parts of the Web, this part is the most time-consuming.

When learning at this stage, you must learn to use development tools, such as Eclipse or IDEA. In the last part, you have to learn to use a database. Mysql database is a good entry choice, and the mainstream relational data in the Java field is Mysql.

4. Mainstream framework learning

The current mainstream framework is the SSM framework, namely Spring, SpringMVC, and Mybatis. You need to learn how to build these frameworks and use them to create a simple WEB project, including the functions of adding, deleting, modifying and checking.

5. Continuous learning

At this time, I believe that you have been able to complete independent development and work. When it comes to work, your technology must be good. But don't slack off on yourself at this time. You have to continue learning, instead of working just to deal with work, you should improve your own value.

At this time, you can read some lower-level books, such as "In-depth Understanding of Java Virtual Machine". This book is to help you comprehensively understand the Java Virtual Machine. At this time, you must know that Java runs on the JVM. Yes, you have no reason not to understand JVM. In addition, regarding concurrency, I recommend "Java Concurrent Programming Practice".

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