设计模式之—抽象工厂模式(Abstract Factory)-Java实现

public interface Person{
}
public class Student implements Person{
}
public class Teacher implements Person{
}
abstract class PersonFactory{
abstract  Person  producePerson();
public static PersonFactory getInstance(String classname) {
PersonFactory personFactory = null;
try {
personFactory = (PersonFactory) Class.forName(classname).newInstance();
} catch (Exception e) {
e.printStackTrace();
}
return personFactory ;
}
}

public class StudentFactory extends PersonFactory {
@Override
public Person producePerson() {
return new Student();
}
}

public class TeacherFactory extends PersonFactory {
@Override
public  Person producePerson() {
return new Teacher();
}
}

public class AbstractFactory{
public static void main(String args[])throws Exception{
Properties p = new Properties();
p.load(new FileInputStream("1.properties"));
String str = p.getProperty("Student");
Person p = PersonFactory.getInstance(str);
p.producePerson();
}
}