1.？ Choice is very important.
As a beginner, it is very important to find a language that you like to use at work. So, choose which programming language as the beginning of your career and make clear your future development direction.
No matter what language you happen to meet or choose, the key is to practice often. It is necessary for Java programmers to deeply understand the concept of object-oriented programming. Without a solid OOPS foundation, we can't appreciate the beauty of an object-oriented programming language like Java. Learning the definition of OO principle is of little use. The key is to learn how to apply these principles to designing solutions in an object-oriented way. Therefore, we should have a good understanding of object modeling, inheritance, polymorphism and design patterns.
2.？ Master the core API
If you don't know the language structure and the core API, then no matter how strong you are in theoretical knowledge, you can't build a forest by yourself. In Java, it is best to have strong practical experience in core APIs, such as java.lang.*, I/O, exceptions, collections, generics, threads, JDBC and so on.
3.？ Have commonly used code snippets/utilities at hand.
Sometimes we may need to copy and paste/write the same code snippet/configuration over and over again. Therefore, it is beneficial to save some configuration fragments (such as log4.properties, jdbc configuration) and utilities (such as StringUtils, ReflectionUtils and DBUtils). These things may not make you different by themselves, but think about it, if your co-developer wants you to help him get a list of attribute values from the object collection, and you only need to use ReflectionUtil for a few minutes to solve it, will it suddenly stand out?
4.？ Understand different development methods
Familiar with different development methods, such as Agile, SCRUM, XP, Waterfall, etc. Now, it is up to the customer to decide which development method to choose. Some customers like agile, while others like waterfall model. So it is absolutely impressive to be able to dabble in various methods.
5.？ It's important to practice keystroke coding many times.
When you choose to learn the basic language of Java, you should also choose a classic introductory book. You don't need too many introductory books. One or two books are enough. You really need to understand them thoroughly. If it is really zero-based, you can find some corresponding attempts to get started online. After you understand the content in the video, you can begin to return to the textbook. It is not recommended to learn from videos all the time. Have a general understanding of the theory, and then start to practice on the computer. Many people are constantly brushing questions. Actually, it's not necessary In the case that the theory is almost mastered, it is enough to practice the corresponding after-school questions independently on the computer, so it is necessary to do it repeatedly and persistently.
For beginners, starting from scratch and becoming a qualified Java development engineer is a boring and challenging process. If you can come to Huo Ying Beida Jade Bird, we tailor a free trial Java experimental class for you.