Test knowledge of Java Factories

Author: SedaKunda

Java/Advanced/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 a Fast Food!";
+	 }
+	}
+
+	class Cake implements Food {
+
+	 public String getType() {
+	 return "Someone ordered a 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);
+	    }
+	}	
+