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| public class SimpleFactoryModelTest {
public static void main(String[] args) {
Factory a = SimpleFactoryModel.getInfo("A");
if (a != null) {
a.doSomething();
}
Factory b = SimpleFactoryModel.getInfo("B");
if (b != null) {
b.doSomething();
}
Factory c = SimpleFactoryModel.getInfo("C");
if (c != null) {
c.doSomething();
}
}
}
class SimpleFactoryModel {
public static Factory getInfo(String type) {
if (type.equals("A")) {
return new AFactory();
} else if (type.equals("B")) {
return new BFactory();
} else {
return null;
}
}
}
abstract class Factory {
public abstract void doSomething();
}
class AFactory extends Factory {
@Override
public void doSomething() {
System.out.println("I am A!");
}
}
class BFactory extends Factory {
@Override
public void doSomething() {
System.out.println("I am B!");
}
}
|