如何创建可以保留在内存中并可供所有其他类访问的类的对象？

Question

I parse a html document and save the data in class. how can I access that class from different classes without initiating it again because I want to use one version of that class

Answer 1

Why dont you set it to a static variable?

public static HtmlData data;

private void parse() { ··· data = result; }

// now you can use the data object anywhere in your code by calling HtmlData.data

Answer 2

As said in your comments, a singlton would be the way to go. A singleton is holding and managing its own instance, so that you can return this same instance to everyone asking for it.

catchword 'dependency injection', best practice, rather than calling the factory via static access directly, is holding the instance in a private property within the class you need it and "inject the dependency" with public setter in a centralized way, while initializing your application.