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Factory.java
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/*
According to Wikipedia, a factory is simply an object that returns another object from some other method call, which is assumed to be "new".
In this problem, you are given an interface Food. There are two classes Pizza and Cake which implement the Food interface, and they both contain a method getType().
The main function in the Main class creates an instance of the FoodFactory class. The FoodFactory class contains a method getFood(String) that returns a new instance of Pizza or Cake according to its parameter.
Sample Input 1
cake
Sample Output 1
The factory returned class Cake
Someone ordered a Dessert!
*/
import java.util.*;
import java.security.*;
interface Food {
public String getType();
}
class Pizza implements Food {
public String getType() {
return "Someone ordered Fast Food!";
}
}
class Cake implements Food {
public String getType() {
return "Someone ordered Dessert!";
}
}
class FoodFactory {
public Food getFood(String order) {
if (order.equalsIgnoreCase("cake")) {
Food c = new Cake();
return c;
}
else {
Food p = new Pizza();
return p;
}
}//End of getFood method
}//End of factory class
public class Factory {
public static void main(String args[]){
Do_Not_Terminate.forbidExit();
try{
Scanner sc=new Scanner(System.in);
//creating the factory
FoodFactory foodFactory = new FoodFactory();
//factory instantiates an object
Food food = foodFactory.getFood(sc.nextLine());
System.out.println("The factory returned "+food.getClass());
System.out.println(food.getType());
}
catch (Do_Not_Terminate.ExitTrappedException e) {
System.out.println("Unsuccessful Termination!!");
}
}
}
class Do_Not_Terminate {
public static class ExitTrappedException extends SecurityException {
private static final long serialVersionUID = 1L;
}
public static void forbidExit() {
final SecurityManager securityManager = new SecurityManager() {
@Override
public void checkPermission(Permission permission) {
if (permission.getName().contains("exitVM")) {
throw new ExitTrappedException();
}
}
};
System.setSecurityManager(securityManager);
}
}