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This article focuses on "sharing six skills for getting started with Java". Friends who are interested may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn "six tips for getting started with Java".

First, master static methods and properties

Static methods and properties are used to describe the characteristics of a group of objects, rather than the characteristics of a single object. Static methods and properties are widely used in Java, which is a common technique. But this technique is not frequently used in many languages. Understanding static methods and attributes, which are frequently used in a large number of Java specifications, is very helpful in understanding the relationship between classes and objects. Therefore, learners should understand static methods and attributes. Java is consistent in the invocation of methods and properties, except when declared, which is different from C++.

Second, attach importance to interface

Class inheritance was widely used in early object-oriented applications. With the continuous development of software engineering theory, people began to realize many shortcomings of inheritance and began to use aggregation instead of inheritance. Abstract description is an important principle for software engineering to solve expansibility, and the tool used directly is interface. Interface has gradually become the core of Java programming method in recent years. On the other hand, as far as applications are concerned, most of the development is based on specifications, and there is no need to establish complex inheritance relationships and huge classes. Therefore, to understand and make good use of the specification has become the primary task of application developers, and the main description means of Java specifications is the interface.

Third, learn the framework of set well

The main way for Java to describe complex data structures is the collection framework. Java does not have pointers, but describes complex data structures such as arrays and object arrays through a powerful collection framework. It is very important to learn how to describe these data structures for application programming, especially when it comes to server-side and three-tier structure programming. Programmers can no longer use structures such as database result sets to describe data at this time. Because many languages do not have such a powerful collection framework system, many beginners are at a loss, let alone what to do with it, so it should be paid enough attention.

IV. Exception capture

Java's emphasis on exception capture is unprecedented. It forces programmers to describe exception capture in a way that is significantly different from logical methods and is of great significance to the integrity and rigor of program description. C++ has similar mechanisms, but we see that many C++ programmers are not used to using these mechanisms. Beginners of Java should fully learn this exception capture mechanism and develop good programming habits.

Fifth, multithreading needs to understand the mechanism.

Many Java programmers are keen on multithreaded programming as a challenge to logic capabilities. In fact, in a large number of applications, there is no need to write multithreaded programs at all, or most application programmers do not write multithreaded programs. This is because multithreading mechanisms are built into the underlying platform. Programmers should understand the principle of multithreading and multithreading safety, which is very important to accurately grasp the program in the future. For example, JSP written to different locations for multiple user environments of the security impact is completely different, such as the famous Super Servlet is each visit as a process, but each page is a thread, and Servlet is just the opposite, the impact on the performance and security of the program is very different.

6. Understand network programming

Java claims to be the strongest network programming language, but most application developers never develop any underlying network programs themselves. What needs to be done is just to understand the principle. The implementation of the network mechanism is realized by the platform. Unless you develop the platform yourself, you don't need to know how to implement socket and how to monitor access. So spending too much effort on this deviates from the assumption that future application development will be carried out on a mature platform rather than from the underlying development platform.

At this point, I believe you have a deeper understanding of the "sharing of six skills for getting started with Java". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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