Java is a great programming language. In the turbulent development of computer technology, Java is everywhere and extremely powerful.

In 1995, Java Applet enabled Web pages to deliver exciting and interactive multimedia content, which facilitating the Web flourishing.

Then with the development of the Web, the Web application became the mainstream way of developing large-scale application.

Java relied on "Compile once, run everywhere" feature to support the cross-platform capabilities which is required by Internet applications and becomes the mainstream language for server-side development.Java EE is still the most important enterprise development platform of the server-side.

Now we are in the era of mobile Internet, and Java is still the deserved leading programming language.

Applications such as Android development, cloud computing, big data, the Internet of Things, and wearable devices all require a distributed computing environment that can be cross-platform and cross-device. We will still see the key role of the Java programming language.

Java is a classic object-oriented programming language with elegant and concise syntax and a rich and useful class library which allows programmers to focus as much as possible on problem solving in the business world.

Many open source projects and prototype systems in research are implemented in Java. The language is so widely used ,it will directly help students in their future research and work. This tutorial has a comprehensive knowledge, clear architecture, a large selection of examples and a large number of well-designed exercises.

This tutorial takes a foundation-first approach, starting with the basics of programming, gradually introducing object-oriented thinking, and finally introducing the application framework, which is very suitable for students who are getting started with programming.

In addition, the emphasis on problem-oriented teaching methods is the key feature of this tutorial, which is the teaching method I have been following in this course.

The best way to teach programming is by example , and the only way to learn programming is by doing .

Teaching students to learn programming courses through vivid and practical examples, avoid boring grammar learning which allowing students to apply what they have learned.

The most important part of the programming course is to develop students' computational thinking. Mastering the thinking of programming, you can easily learn and use other programming languages.

Finally, I wish everyone a happy study.