I. Online learning

This is a very good online website for learning Java, which is free. This is a personal project, which aims to make you master the Java programming language quickly through simple and effective practice in the browser. By running the actual code directly from the web browser, you can try to code without installing and executing the code locally, which undoubtedly improves the programming efficiency and hands-on efficiency. You can practice according to the catalogue. There are basic parts and advanced parts. First, there are sample codes that tell you what you need to pay attention to, and explain them in detail so as to teach you before you practice.

Second, StackOverflow.

Speaking of learning Java, how can you not mention StackOverflow? StackOverflow is an IT technical question-and-answer website related to programs. Users can submit questions, browse questions and index related content for free on the website, and use simple HTML when creating the home page. On the question page, there are no advertisements, JavaScript windows for sales information, etc. Will pop up. Clean and refreshing, you can find the answers to almost all questions on StackOverflow. You can ask public questions, personal questions and even find a job on StackOverflow.

Third, DZone

DZone will have news and articles of IT frontier, and there will be Al, big data, cloud, database, DevOps, loT, Java and open source projects.

About the introduction of new features of Java, the use of new features will be on it, which is an indispensable website for you to master the cutting-edge dynamics.

Fourth, LeetCode.

LeetCode is a great website for brushing questions. I need not say more about its importance.

There are many arithmetic problems in it, which are necessary for interviews in big factories. It is said that if you master these arithmetic problems, you can hang it in any big factory in China. I don't know if it's true or not. After all, we haven't done many problems.

Problems can be divided into difficulty, solution, acceptance, difficulty and so on. There are also interview questions for big factories. Because LeetCode is so awesome, LeetCode has launched a Chinese version, which is exactly the same as the English version. If your English is not very good, you can look at the Chinese version.

Verb (abbreviation of verb) Java official document

Learning Java, what is more authoritative than official website? I didn't know official website could be so clean. Let's look at all kinds of content, overview, programming language, tools, features, JVM and so on. But the language is a bit stiff and requires a strong English foundation. But now that Google has translated, I don't think these problems are problems.

Sixth, Coursera

Coursera is an online course website, which is tailor-made for big factories. It is similar to many online education institutions in China, but its authenticity cannot be guaranteed. After all, no small partners have held courses around. Coursera is a large-scale open online course project, which was founded by two professors of computer science at Stanford University. It aims to cooperate with top universities in the world to provide online open courses. It cooperates with top universities and institutions in the world to provide online courses for anyone to learn.

Seven, the Java world

Java World is a pure Java learning website, which contains many Java articles. It is different from DZone in so many fields. The Java world only focuses on Java. Oh, by the way, there is Android, which is an indispensable website for you to improve your horizons and learn new features of Java.

Eight, Java Chengxu Garden Circle

Java World is a pure Java learning website, which contains many Java articles. It is different from DZone in so many fields. The Java world only focuses on Java. Oh, by the way, there is Android, which is an indispensable website for you to improve your horizons and learn new features of Java.