java如何实现抽象工厂模式Abstract Factory
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在工厂类模式中，如果需要新的类时，需要修改工厂类，这样显然不利于扩展。在抽象工厂模式中，需要扩展一个类时，不需要修改之前的代码就可以实现。
[java]view plain copy print?
/**
* Created by Administrator on 2016/11/18.
*/
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("医生开始上班了");
}
}
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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("学生开始上课了");
}
}
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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("教师开始教学了");
}
}
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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("校长开始上班了");
}
}
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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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