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Factories.java
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Factories.java
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package Chapter9;
import static org.lozybean.util.Print.*;
interface Service{
void method1();
void method2();
}
interface ServiceFactory{
Service getService();
}
class Implementation1 implements Service{
Implementation1(){};
public void method1(){
println("Implementation1.method1()");
}
public void method2(){
println("Implementation1.method2()");
}
}
class Implementation1Factory implements ServiceFactory{
public Service getService(){
return new Implementation1();
}
}
class Implementation2 implements Service{
Implementation2(){};
public void method1(){
println("Implementation2.method1()");
}
public void method2(){
println("Implementation2.method2()");
}
}
class Implementation2Factory implements ServiceFactory{
public Service getService(){
return new Implementation2();
}
}
public class Factories {
public static void serviceConsumer(ServiceFactory fact){
Service s = fact.getService();
s.method1();
s.method2();
}
public static void main(String[] args){
serviceConsumer(new Implementation1Factory());
serviceConsumer(new Implementation2Factory());
}
}/*output
Implementation1.method1()
Implementation1.method2()
Implementation2.method1()
Implementation2.method2()
*/