Java advanced interview question list, java advanced interview

Java advanced interview question list, java advanced interview
Basic concepts and core design ideas of Object-Oriented Programming

• This topic explains the polymorphism (polymorphism), encapsulation, cohesion, and coupling ).

• What is the difference between Inheritance and Aggregation.

• How do you understand Clean Code and Technical Debt.

• Describes common refactoring techniques.

• Describe the SOLID principle.

• What are other principles such as KISS, DRY, and YAGNI.

• What is Design Patterns )? What design patterns do you know?

• Have you ever learned about Anti-Patterns?

• How do you design the login ship/mathematical expression Computing Program/one-stop program?

• What basic sorting algorithms do you know about their computing complexity? Which algorithm do you prefer to use when data is given?

• Try to write the following code:
  -Calculate the factorial of a specified number
  -Develop Fizz Buzz games
  -Reversing words in a sentence
  -Retrieval string Detection
  -Enumerate all permutation and combination of a given string

Java core concepts

• What are the similarities and differences between equals and hashCode? Java Collection is how to use them.

• Describes the Java integration (Collections), interface (Interfaces), implementation (Implementations) concept. What is the difference between the ArrayList and ArrayList?

• What is the difference between Primitives and Wrappers?

• Where can the final and static keywords be used? What are their functions?

• This section describes the Access Descriptor (Access Modifiers) in Java ).

• Description of the differences between String, StringBuilder, and StringBuffer.

• What is the difference between an Interface and an Abstract Class.

• What is the difference between Overriding and OverLoading.

• Which types of exceptions are involved? What are the so-called handle or declare principles?

• Briefly describe how the garbage collector works.

• How do you deal with Memory leakage or stack overflow?

• How to build an unchangeable class structure? Where are the key points?

• What is JIT compilation?

• Java learning and communication QQ group: 589809992 let's learn Java together!

• What new functions does Java 8/Java 7 provide for us? What new benefits will the coming Java 9 bring?-Yes?

Hibernate/Database

• Please explain the ORM.

• Briefly describe the advantages and disadvantages of Hibernate.

• What is the difference between Hibernate and JPA?

• What features does the latest Hibernate version provide?

• What is Lazy Loading )?

• What is N + 1?

• This section describes some familiar Hibernate annotations.

• Introduction to Hibernate Session and SessionFactory.

• Status of Entity Beans.

• The cache in Hibernate is divided into several layers.

• What levels of transaction support are supported in Hibernate?

• What is Optimistic Locking )?

• Briefly describe the ACID principle.

• Briefly describe the database Normalization (Normalizations ).

• This section describes how to optimize the Slow Query policy in your daily work.

Spring

• What are the new features of Spring?

• This section describes the advantages and disadvantages of Spring.

• What is Inversion of Control and Dependency Injection )?

• Which Spring modules have you used?

• In Spring, how does one use dependency injection?

• How many automatic injection mechanisms are provided in Spring?

• This section describes Spring MVC.

• What are Scopes in Spring?

• What are the steps for Bean lifecycle in Spring?

• Java learning and communication QQ group: 589809992 let's learn Java together!

• What is the difference between Spring Bean and EJB Bean?

Other topics

• This article introduces Aspect Oriented Programming ).

• The differences between GET and POST in this section.

• What are the differences between Web Server, Web iner, and Application Server?

• This section briefly introduces what happened to the Java Web application from entering the URL in the browser to obtaining the request interface.

• What is an N-layer architecture?

• What is the difference between MicroServices and Monolithic Applications?

• What business-level design models do you know?

• How did you test an application? What testing frameworks do you know?

• How do you test a single method?

• What are the most difficult technical challenges in your career?

• What is Domain Driven Development )?

• This section describes some common plug-ins of your favorite IDE.

• In addition to IDE, what tools do you use in your daily work?

• What version management tools do you use?

• What is the difference between Branch and Tag?

• What are your commonly used Continuous Integration and Static Code Analysis tools?

I have a public account, and I often share some Java-related dry goods. If you like my share, you can search for "Java head" or "javatuanzhang" to follow up.