Java - Interview Questions - Explain The Code - Enum

public enum Countries {
            USA("Washington DC","North America"),
            MEXICO("Mexico City","North America"),
            CHINA("Beijing","Asia"),
            INDIA("New Delhi","Asia"),
            FRANCE("Paris","Europe");
 }
        
Q1. Will this code give any compilation error ?

Possible Ans. Yes, we haven't defined constructor with 2 String arguments.

Q2. What is USA, MEXICO , CHINA, INDIA and FRANCE are in this Enum ?

Possible Ans. Enum constants or References to constant objects.

Q3.  Can we get to know the continent ( 2nd value in the constructor ) if we have the Enum constant ?

Possible Ans. Yes if we define the constructor and variables appropriately. For example -

public enum Countries {
            USA("Washington DC","North America"),
            MEXICO("Mexico City","North America"),
            CHINA("Beijing","Asia"),
            INDIA("New Delhi","Asia"),
            FRANCE("Paris","Europe");

            Countries(String capital,String continent){
                   this.capital = capital;
                   this.continent = continent;
            }

            public String capital;
            public String continent;
 }