Alibaba Java programmer interview 12 questions, will you be brushed off?

Recently, the w3cschool app developers shared a "Alibaba java face" in the headlines, attracting a lot of attention from java programmers.

There is no doubt that Java is still a very hot programming language.

Here's w3cschool to share Alibaba Java's two-round interview questions:

Alibaba java side

0, introduce the principle of Hashmap

1, introduce the red and black trees

2, thread synchronization, concurrent operation how to control

3. The difference between abstract factory and factory method patterns

4, the idea of factory mode

5, describe the workflow of struts

Alibaba Java two sides

0, self-introduction

1, the understanding of Spring, what is used in the project?

2, Arraylist's principle

3, the difference between the autotowire and resourse keywords in Spring

4, the use of thread pool considerations

5, sendRedirect, foward difference

If you're only halfway through these questions and you're going to be eliminated in the first round, you're going to continue to study java programming.

1, advice for novices:

If you're a novice programmer, this Alibaba java is too hard for you.

As a novice programmer, in addition to focusing on the latest technological developments, you still have to focus on programming.

Novices have two ways to learn programming, one is to read over and over again, while using the computer to run the book's code, directly combat.

Another way, if you don't have books on hand, it's recommended to use programming APP learning.

For example, many fans of w3cschool are using the w3cschool app to write down the first java program of their programming career. That's right, it's hello world, and it was so exciting!

2, java common problems

What specific interview questions would you like to ask me? Then according to these questions, directly in the form of endorsement to participate in the famous enterprise recruitment, this road is not accessible.

w3school can only share with you some of the knowledge points you get in the regular exam.

For example, the class, function, implementation principle in Java concurrent package, Java virtual machine content, memory series problems (which parts, Java's memory model is designed, why so designed), Java's data structure related class implementation principles, such as LinkedList, ArrayList and so on.

3, the interview as a training soldier

Interviews, in a sense, can also be used as a training exercise. You don't just get a job through an interview, you know yourself through an interview, so it's also a process of finding yourself.

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