Question

I’m new to Java. I’m wondering what will be the best option to store 2D array with different type of data.

It will be table of countries, each has capital and is in cotinent. Then I have to store it this way:
ContinentID | Country name | Capital

What to choose?

Answer 1

You might want to consider making a Country class to hold this data, and then maintaining a list/array of instances of this class.

public class Country {
    private int continentId;
    private String name;
    private String capital;

    public Country(int continentId, String name, String capital) {
        this.continentId = continentId;
        this.name = name;
        this.capital = capital;
    }

    // ...
}

You would then have something along the lines of

List<Country> countries = new ArrayList<Country>();
countries.add(new Country(123, "USA", "Washington DC"));
...