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This article is about how java implements the abstract factory pattern Abstract Factory. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

In the factory class pattern, if you need a new class, you need to modify the factory class, which is obviously not good for extension. In the abstract factory pattern, when you need to extend a class, you don't need to modify the previous code.

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* Created by Administrator on 2016-11-18.

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Public interface Worker {

Public void work ()

}

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Public interface Provider {

Public Worker produce ()

}

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Public class Doctor implements Worker {

@ Override

Public void work () {

System.out.println ("Doctor starts work")

}

}

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Public class DoctorFactory implements Provider {

@ Override

Public Worker produce () {

Return new Doctor ()

}

}

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Public class Student implements Worker {

@ Override

Public void work () {

System.out.println ("students begin class")

}

}

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Public class StudentFactory implements Provider {

@ Override

Public Worker produce () {

Return new Student ()

}

}

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Public class Teacher implements Worker {

@ Override

Public void work () {

System.out.println ("the teacher starts teaching")

}

}

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Public class TeacherFactory implements Provider {

@ Override

Public Worker produce () {

Return new Teacher ()

}

}

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Public class Headmaster extends Teacher {

Public void work () {

System.out.println ("headmaster starts work")

}

}

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Public class HeadmasterFactory implements Provider {

@ Override

Public Worker produce () {

Return new Headmaster ()

}

}

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Public class Test {

Public static void main (String [] args) {

Provider providers [] = {new DoctorFactory (), new StudentFactory (), new TeacherFactory (), new HeadmasterFactory ()}

For (Provider f: providers) {

F.produce () .work ()

}

}

}

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