The technical principles of the structure framework in the Java class library

In the Java library, the structure framework is an important technical principle that is widely used in various application development and software engineering fields.The constructing framework provides a mode that can be reused, and uses classes and interfaces to define the structure, initialization and operation of the object.This article will analyze the technical principles of the structure framework in the Java library and provide the necessary Java code examples. 1. Overview of the structure framework The structural framework is a software design pattern. It encapsulates the object's creation and initialization process in a unified framework, providing the flexible and reusable structure of the object.The structure framework mainly includes two core components: constructors and constructive parameters.The constructor is a method for creating objects, while the constructor is a parameter passed to the constructor. 2. Principles of the implementation framework 1. Use static factory method The structural framework can be created and initialized using a static factory method.The static factory method is a static method defined in the class, and they are responsible for creating and returning objects.By defining appropriate structural parameters in the static factory method, different objects can be created according to the pass parameters. Below is a sample code that demonstrates the structure framework of using a static factory method to create objects: public class Car { private String make; private String model; private Car(String make, String model) { this.make = make; this.model = model; } public static Car createCar(String make, String model) { return new Car(make, model); } // getter and setter methods } // Use the static factory method to create a CAR object Car car = Car.createCar("Toyota", "Camry"); 2. Use Builder mode The Builder mode is a design mode where the structure of the object is separated from the initialization process. It builds and configure objects by using a Builder class.The Builder class contains a series of settings to set the attribute. These methods return the Builder itself to make chain calls.Finally, the BUILD () method of the BUILDER class will return to the constructive object. Below is a sample code that demonstrates the structure framework of creating objects using Builder mode: public class Car { private String make; private String model; private Car(Builder builder) { this.make = builder.make; this.model = builder.model; } // getter methods public static class Builder { private String make; private String model; public Builder setMake(String make) { this.make = make; return this; } public Builder setModel(String model) { this.model = model; return this; } public Car build() { return new Car(this); } } } // Create a CAR object with the builder mode Car car = new Car.Builder() .setMake("Toyota") .setModel("Camry") .build(); 3. Summary The structural framework is one of the important technical principles in the Java class library. It can help developers create and initialize objects in a flexible and reusable way.The use of static factory methods and Builder models are common methods to realize the structure framework.Developers can choose suitable methods according to the needs of the project and expand and optimize accordingly according to the specific situation.