Explain Factory and abstract Factory Design Pattern

Explain Factory and abstract Factory Design Pattern
Manikandan ThiagarajanSenior consultantAsked:
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Manikandan ThiagarajanSenior consultantAuthor Commented:
could you please explain with own word and example for factory and abstract factory
The Factory patterns can be used in following cases:

1. When a class does not know which class of objects it must create.
2. A class specifies its sub-classes to specify which objects to create.
3. In programmer’s language (very raw form), you can use factory pattern where you have to create an object of any one of sub-classes depending on the data provided.


public Person getPerson(String name, String gender) {
    if (gender.equals("M"))
        return new Male(name);
    else if(gender.equals("F"))
       return new Female(name);
       return null;

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Abstract Factory patterns:

One of the main advantages of Abstract Factory Pattern is that it isolates the concrete classes that are generated. The names of actual implementing classes are not needed to be known at the client side. Because of the isolation, you can change the implementation from one factory to another.

example could be the same as a normal factory pattern but with a abstract-factory the super class of the objects is abstract
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