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Collection of classic Java interview questions (8)

Java interview questions: This article shares with you several common questions in Java interviews. It has certain reference value and I hope it can help you. What is the difference between HashSet and TreeSet? Answer: TreeSet is implemented as a binary tree, and HashSet is implemented as a hash table.

Jul 16, 2020 pm 05:11 PM

java面试题

Collection of classic Java interview questions (7)

What are the characteristics of each of the three interfaces List, Map, and Set when accessing elements? Answer: List holds elements in a specific order and can have duplicate elements; Set cannot have duplicate elements; Map saves key-value values, and value can have multiple values.

Jul 15, 2020 pm 05:15 PM

java面试题

Collection of classic Java interview questions (6)

This article shares some classic Java interview questions with you, which has certain reference value and I hope it can help you. What are the characteristics of java collections and arrays? Array: Fixed size, can only store data of the same data type; Collection: Size can be dynamically expanded, and can store various types of data.

Jul 13, 2020 pm 05:17 PM

java面试题

Collection of classic Java interview questions (5)

Java interview questions: This article shares some classic Java interview questions with you, which has certain reference value and I hope it can help you. What is thread synchronization and asynchronousness? Synchronization is collaborative pace, running in a predetermined order; asynchronous and synchronous are opposite, non-blocking, and run at the same time.

Jul 11, 2020 pm 04:45 PM

java面试题

Collection of classic Java interview questions (4)

This article introduces some classic Java interview questions to you, I hope it will be helpful to you. What are the advantages of multithreading? 1. The cost of creating a new thread is smaller than that of creating a new process; 2. The resources occupied by a thread are smaller than that of a process.

Jul 09, 2020 pm 04:28 PM

java面试题

Collection of classic Java interview questions (3)

What are generics, how to use them, and what are their benefits? Answer: Generics are a special type that defers the work of type clarification until when an object is created or a method is called. It is used for parameterized types, passing the type as a parameter.

Jul 07, 2020 pm 04:54 PM

java面试题

Collection of classic Java interview questions (1)

Java interview questions: This article shares some classic Java interview questions with you, I hope it will be helpful to you. What is the difference between static variables and instance variables? Static variables belong to classes, and instance variables belong to objects.

Jul 02, 2020 pm 04:30 PM

java面试题

2020 New Java Interview Questions-Spring Boot/Spring Cloud (2)

What is Spring Cloud? Spring Cloud is a framework dedicated to distributed systems and cloud services. Spring Cloud provides developers with tools to quickly build some common patterns in distributed systems.

Jul 01, 2020 pm 04:22 PM

java面试题Spring BootSpring Cloud

2020 New Java Interview Questions-Spring Boot/Spring Cloud (1)

Why use spring boot? Reasons: 1. Spring boot makes coding simple; 2. Spring boot makes configuration simple; 3. Spring boot makes deployment simple; 4. Spring boot makes monitoring simple.

Jun 30, 2020 pm 04:46 PM

java面试题Spring BootSpring Cloud

2020 New Java Interview Questions-Spring (3)

This article comes from Java interview questions. It shares spring-related interview questions with you. I hope it can help you. 1. Let’s talk about the spring mvc running process; 2. What clients are there for spring mvc? 3. What is the role of @RequestMapping.

Jun 29, 2020 pm 05:10 PM

java面试题spring

2020 New Java Interview Questions-Spring (2)

This article introduces spring-related Java interview questions to you, and I hope it will be helpful to you. The beans in the spring container themselves do not have thread-safety characteristics, but in detail, they still need to be studied in combination with the beans of specific scopes.

Jun 28, 2020 pm 05:24 PM

java面试题Spring

2020 New Java Interview Questions-Spring

The purpose of spring to be used is: to solve the complexity of enterprise application development. Spring is a lightweight control inversion and aspect-oriented container framework. Spring can configure and combine simple components into complex applications.

Jun 24, 2020 pm 04:49 PM

java面试题Spring

2020 New Java Interview Questions-Design Patterns

Java interview question: The simple factory model consists of three roles, namely: 1. Factory role; 2. Abstract product role; 3. Specific product role. Among them, the factory role is the core of the simple factory model and contains certain business logic and judgment logic.

Jun 22, 2020 pm 05:19 PM

java面试题设计模式

2020 New Java Interview Questions - Network (2)

The seven-layer model of OSI is: 1. Application layer; 2. Presentation layer; 3. Session layer; 4. Transport layer; 5. Network layer; 6. Data link layer; 7. Physical layer. The methods to achieve cross-domain are: 1. JSONP cross-domain; 2. CORS; 3. Proxy; 4. WebSocket.

Jun 20, 2020 pm 05:32 PM

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