MenuOption.java

package runningShop;

public enum MenuOption{
    EXIT(0, "Exit"),
    LIST_PRODUCTS(1, "List Products"),
    BUY_PRODUCT(2, "Buy Product"),
    FIND_PRODUCT(3, "Find Product"),
    SHOW_CART(4, "Show Cart"),
    CHECKOUT(5, "Checkout");
    
    private int id;
    private String displayValue;
    
    
    
    MenuOption(int id, String displayValue){
        this.id = id;
        this.displayValue = displayValue;
    }
    
    public int getId(){
        return this.id;
    }
    
    public String getDisplayValue(){
        return this.displayValue;
    }
    
    public static MenuOption fromOptionId(int optionId){
        for(MenuOption option: MenuOption.values()){
            if (option.id == optionId) {
                return option;
            }
    }
                    throw new IllegalArgumentException(String.format("Menu option id %d is not an available option.", optionId));
    }
}