In -depth discussion of the technical principles of the simple YAML framework in the Java library

The technical principles of the simple YAML framework in the Java class library Introduction: YAML (Yet Another Markup Language) is a tag language for expressing data serialization.It stores data with simple, readable, and easy to understand text formats, and supports a variety of programming languages.In Java development, for data in YAML format, we can use the simple YAML framework in the Java class library to operate and analyze.This article will explore the technical principles of the simple YAML framework in the Java class library to help readers better understand and apply the framework. 1. Introduction to YAML format: Yaml's syntax structure is very clear. It uses the indentation to represent hierarchical relationships and support complex data structures such as key values, array and nesting.Below is a simple yaml format example: # Note line to start with# employee: name: John Smith age: 30 department: IT skills: - Java - Python In this example, `Employee` represents an employee object, including name, age, department and skills. 2. Simple YAML framework overview: The simple YAML framework provides a convenient YAML file processing function for Java applications.It consists of the following core components: -YAML file parser: used to read and parsing the content of YAML files. -Data model: transform the content of the yaml file into a Java object. -Data access interface: Provide data access and operation methods through the interface. 3. Technical principle: -Yaml file parser: The simple YAML framework uses a stream parser to parse the Yaml file.The streaming parser reads the contents of the file one by one and parses it into a data structure.This analysis method is suitable for large YAML files because it only needs to load some data into memory to reduce memory overhead. -Data model: In the simple YAML framework, the content of the YAML file is represented by a data model.The data model can be the native data types in Java, such as string, integer, floating point number, etc., or it can also be complex data structures such as array, list, mapping, etc.The framework transforms the data structure in the YAML file into a corresponding Java object to facilitate developers for operation and use. -Data access interface: The simple YAML framework provides data access interfaces, and developers can read, modify and delete data in the Yaml file through these interfaces.For example, you can use the `Get` method to obtain the value of the specified key, use the` set` method to modify the value of a key, and use the `Remove` method to delete the specified key.Through these interfaces, developers can flexibly operate the data in the yaml file. Example code: The following is a simple example code. How to use simple YAML framework analysis and operation YAML file: import io.github.xinyangpan.yaml.Yaml; public class YamlExample { public static void main(String[] args) { // Read yaml file Yaml yaml = Yaml.load("employee.yaml"); // Get the name of the employee String name = yaml.get("employee.name"); System.out.println ("Name:" + Name); // Modify the skill list yaml.set("employee.skills", new String[]{"Java", "Python", "C++"}); // Delete the age field yaml.remove("employee.age"); // Save the modified content to the file yaml.save("updated_employee.yaml"); } } Through the above examples, we can see how to read, modify and save data in the Yaml file with a simple YAML framework. in conclusion: The simple YAML framework provides a convenient operation and analysis of the function of YAML files, making processing YAML format data simple and efficient.This article discusses the technical principle of the framework and gives a sample code to help readers better understand and apply the framework.Through this framework, developers can easily process the data in YAML formats to improve the development efficiency of Java applications.