HR자바 Java Factory Pattern

개요

HR자바 Java Factory Pattern

• https://www.hackerrank.com/challenges/java-factory/problem

해커랭크 Java

#	문제	비고
HR자바 Advanced e
53	HR자바 Java Varargs - Simple Addition
54	HR자바 Java Reflection - Attributes
55	HR자바 Can You Access?
56	HR자바 Prime Checker
57	HR자바 Java Factory Pattern
58	HR자바 Java Singleton Pattern
59	HR자바 Java Visitor Pattern
60	HR자바 Java Annotations
61	HR자바 Covariant Return Types
62	HR자바 Java Lambda Expressions
63	HR자바 Java MD5
64	HR자바 Java SHA-256

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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) {

        //Write your code here
        if( order.equals("pizza") ) return new Pizza();
        if( order.equals("cake") ) return new Cake();
        return null;

public class Solution {
    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);
    }
}