instantiation « subclass « Java Class Q&A

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Java Class Q&A » subclass » instantiation 

1. Getting data from a subclass without instantiation    stackoverflow.com

I have an abstract superclass and various subclasses. Each subclass contains a value that I would like to use statically but it is not possible to create an abstract static method. ...

2. Java: When I Instantiate a Subclass of an Abstract Class It Doesn't Recognize the Constructor of its Superclass    stackoverflow.com

I do not have very much Java experience but I see codes where there is an abstract class with a certain constructor and then a subclass of that abstract class without ...

3. instantiate subclass in superclass static method    stackoverflow.com

I'm developing ORM in Java. I want to do this.

class Model {
    public static Model find(Object id) {
    }
}

class User extends Model;
class Post extends Model;

User ...

4. Dynamically instantiating abstract subclass    stackoverflow.com

First I have to say I am real new to Java. So all apologize if my question sound stupid but I haven't been able to find a solution so far... I would ...

5. Java: Method to instantiate a particular sub class of an abstract class    stackoverflow.com

How to create an object of a particular sub-class of an abstract class based on the classNameString generated on runtime? Let say there is an abstract class A

public abstract class A ...

6. An abstract class cannot be instantiated, but can be extended by subclasses    coderanch.com

A class that is missing definitions for one or more methods. You can't thus create an object of that class. You must first create a subclass and provide definitions for the abstract methods. Unlike interfaces, abstract classes may implement some of the methods. Though you can't instantiate an abstract class, you can invoke its static methods.

7. Instantiate subclass based on superclass instance    coderanch.com

Hello Jim - Your suggested approach makes sense to me. In effect, you are changing a reference's associated object type from Person to Participant. The new Participant object is an entirely new entity that simply uses values from the Person object to supply initialization values. I am curious to hear other opinions. If I understand you correctly, the code would look ...

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