current location：Home > Technical Articles > Java > JavaBase
- Direction：
- All web3.0 Backend Development Web Front-end Database Operation and Maintenance Development Tools PHP Framework Daily Programming WeChat Applet Common Problem Other Tech CMS Tutorial Java System Tutorial Computer Tutorials Hardware Tutorial Mobile Tutorial Software Tutorial Mobile Game Tutorial
- Classify：
-
- What are the eight basic data types in java
- The eight basic data types of Java are: 1. Integer type, byte, int, short, long; 2. Floating point type, float, double; 3. Boolean type, boolean; 4. Character type, char.
- JavaBase 4230 2020-07-02 15:12:27
-
- What to do if a red cross appears when importing a project in eclipse
- The solution to the red cross when importing a project in eclipse: First, right-click the project name and select [Configure Build Path] in [Build Path]; then select remove in Libraries; and finally add the JRE environment.
- JavaBase 13836 2020-07-02 13:31:17
-
- The use of 5 commonly used annotations in springmvc
- There are five common annotations in springmvc: 1. @RequestMapping, which is an annotation used to process request address mapping; 2. @RequestParam, which is used to map the request parameter area data to the parameters of the function processing method; 3. @PathVariable, used Yu will request variables.
- JavaBase 10924 2020-07-01 17:25:30
-
- What is java a programming language for?
- Java language is an object-oriented programming language. Object-oriented is a method of understanding and abstracting the real world. It is the product of the development of computer programming technology to a certain stage. The object-oriented development model is more conducive to people's thinking, and facilitates the division of programs during the specific development process. Division of labor and cooperation among employees to improve development efficiency.
- JavaBase 14761 2020-07-01 15:34:26
-
- what is springboot
- Spring Boot is a new framework provided by the Pivotal team. It is designed to simplify the initial construction and development process of new Spring applications. The framework uses a specific method for configuration, so that developers no longer need to define boilerplate configuration.
- JavaBase 5553 2020-07-01 15:56:39
-
- What are the three major characteristics of the Java language?
- The three major characteristics of the Java language are: encapsulation, inheritance, and polymorphism. Encapsulation is to hide the information of a class inside the class, and does not allow external programs to directly access it. Instead, the hidden information is operated and accessed through the methods of the class; inheritance is a relationship between classes, more like subordinates in a collection. Regarding relationships; polymorphism refers to the multiple forms of objects.
- JavaBase 5826 2020-07-01 15:26:12
-
- The difference between springboot and springmvc
- The difference between springboot and springmvc is that springboot is just a configuration tool, integration tool, and auxiliary tool, while springmvc is the framework and the actual code running in the project.
- JavaBase 3000 2020-07-01 15:09:36
-
- What is the relationship between classes and objects
- The relationship between classes and objects is: the relationship between classes and objects is abstract and concrete. A class is a template, an abstract description of a type of thing; an object is used to represent the individual of that thing in reality. A class is an abstraction on top of an object, and an object is the concretization of the class and an instance of the class.
- JavaBase 32756 2020-07-01 13:52:24
-
- What is jdbc and its function
- Java Database Connectivity, [Java Database Connectivity, JDBC for short] is an application programming interface in the Java language used to standardize how client programs access the database, providing methods such as querying and updating data in the database.
- JavaBase 11445 2020-07-01 13:16:46
-
- A class can only have one object, right?
- A class can only have one object, right. A class is a user-defined data type that can be used to describe one or more variables and objects. A class is an abstract data type, an abstraction of objects; an object is an abstraction of objective things.
- JavaBase 13107 2020-07-01 10:51:06
-
- What are the formats of if statements?
- The if statement has three formats, namely: 1. [if (Boolean expression) {execution statement}]; 2. [if (Boolean expression) {execution code} else {execution code}]; 3. [if (Boolean expression) {execution code}]; Expression){execution code}else if (Boolean expression){execution code}else{execution code}].
- JavaBase 23829 2020-07-01 09:52:19
-
- What does dependency injection mean?
- Dependency injection means that when the program is running, if you need to call another object for assistance, you do not need to create the callee in the code, but rely on external injection. Spring's dependency injection has almost no requirements on the caller and the callee. , fully supports the management of dependency relationships between POJOs.
- JavaBase 7045 2020-06-29 15:30:00
-
- Detailed explanation of Spring AOP annotations
- This article mainly introduces Spring AOP annotation cases and detailed explanations of basic principles. The article introduces it in great detail through sample code. It has certain reference learning value for everyone's study or work. Friends who need it can refer to it.
- JavaBase 3346 2020-06-28 18:00:16
-
- What are the characteristics of the interface?
- The characteristics of the interface are: 1. The interface is modified with the interface keyword; 2. The interface cannot be instantiated; 3. The implementation class must implement all methods of the interface (except abstract classes); 4. The implementation class can implement multiple interfaces; 5. , the constants in the interface are static constants
- JavaBase 13507 2020-06-28 16:19:28
-
- What does the interface do?
- The role of interfaces: 1. Interfaces can separate projects, and all layers are oriented to interface development, improving development efficiency; 2. Interfaces reduce the coupling between code and code; 3. Interfaces can be implemented and inherited in multiple ways, and one class In addition to interfaces, other classes can also be inherited.
- JavaBase 27474 2020-06-28 16:05:10
Tool Recommendations
jQuery enterprise message form contact code
jQuery enterprise message form contact code is a simple and practical enterprise message form and contact us introduction page code.
form button
2024-02-29
HTML5 MP3 music box playback effects
HTML5 MP3 music box playback special effect is an mp3 music player based on HTML5 css3 to create cute music box emoticons and click the switch button.
Player special effects
2024-02-29
HTML5 cool particle animation navigation menu special effects
HTML5 cool particle animation navigation menu special effect is a special effect that changes color when the navigation menu is hovered by the mouse.
Menu navigation
2024-02-29
jQuery visual form drag and drop editing code
jQuery visual form drag and drop editing code is a visual form based on jQuery and bootstrap framework.
form button
2024-02-29
Organic fruit and vegetable supplier web template Bootstrap5
An organic fruit and vegetable supplier web template-Bootstrap5
Bootstrap template
2023-02-03
Bootstrap3 multifunctional data information background management responsive web page template-Novus
Bootstrap3 multifunctional data information background management responsive web page template-Novus
backend template
2023-02-02
Real estate resource service platform web page template Bootstrap5
Real estate resource service platform web page template Bootstrap5
Bootstrap template
2023-02-02
Simple resume information web template Bootstrap4
Simple resume information web template Bootstrap4
Bootstrap template
2023-02-02
Cute summer elements vector material (EPS PNG)
This is a cute summer element vector material, including the sun, sun hat, coconut tree, bikini, airplane, watermelon, ice cream, ice cream, cold drink, swimming ring, flip-flops, pineapple, conch, shell, starfish, crab, Lemons, sunscreen, sunglasses, etc., the materials are provided in EPS and PNG formats, including JPG previews.
PNG material
2024-05-09
Four red 2023 graduation badges vector material (AI EPS PNG)
This is a red 2023 graduation badge vector material, four in total, available in AI, EPS and PNG formats, including JPG preview.
PNG material
2024-02-29
Singing bird and cart filled with flowers design spring banner vector material (AI EPS)
This is a spring banner vector material designed with singing birds and a cart full of flowers. It is available in AI and EPS formats, including JPG preview.
banner picture
2024-02-29
Golden graduation cap vector material (EPS PNG)
This is a golden graduation cap vector material, available in EPS and PNG formats, including JPG preview.
PNG material
2024-02-27
Home Decor Cleaning and Repair Service Company Website Template
Home Decoration Cleaning and Maintenance Service Company Website Template is a website template download suitable for promotional websites that provide home decoration, cleaning, maintenance and other service organizations. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-05-09
Fresh color personal resume guide page template
Fresh color matching personal job application resume guide page template is a personal job search resume work display guide page web template download suitable for fresh color matching style. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-29
Designer Creative Job Resume Web Template
Designer Creative Job Resume Web Template is a downloadable web template for personal job resume display suitable for various designer positions. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-28
Modern engineering construction company website template
The modern engineering and construction company website template is a downloadable website template suitable for promotion of the engineering and construction service industry. Tip: This template calls the Google font library, and the page may open slowly.
Front-end template
2024-02-28
