How do I make a Java map like this JS example?

I have started lately learning Java. I can’t figure out how to write something like this in Java.

This is how would I have done it in JS.

function getColorCode(color){
    var colorCodes = {
        'black' : '\u00A70',
        'dark_blue' : '\u00A71',
        'dark_green' : '\u00A72'
    }
    return colorCodes[color]
}

>Solution :

A direct translation of your function to Java would be:

public String getColorCode(String color) {
    var colorCodes = Map.of(
            "black", "\u00A70",
            "dark_blue", "\u00A71",
            "dark_green", "\u00A72");
    return colorCodes.get(color);
}

However, it would be better to define the map once, instead of on each invocation:

private static final Map<String, String> COLOR_CODES = Map.of(
        "black", "\u00A70",
        "dark_blue", "\u00A71",
        "dark_green", "\u00A72");

public String getColorCode(String color) {
    return COLOR_CODES.get(color);
}

Or use a switch expression:

public String getColorCode(String color) {
    return switch (color) {
        case "black" -> "\u00A70";
        case "dark_blue" -> "\u00A71";
        case "dark_green" -> "\u00A72";
        default -> null;
    };
}