Java / Kotlin: why can't this be done?

Question

Kotlin

Why, for example, can't I let the user enter any arbitrary value, and then find such a value and give a decryption?

<resources> // это в values/strings.xml
    <string name="bomba">z2df21ffg231ffz</string>
</resources>

// это в MainActivity.kt

    var userInputValue = "bomba"
    var secretKey = R.string.userInputValue

What is the point?
The person in the field enters the word "bomba", and he is given the secret key "z2df21ffg231ffz"

Answer 1

It is possible to get an integer identifier from a string, but this is unproductive, so use with caution.
UPD:
You should not do this until you are one hundred percent sure of what you are doing. It is better to reconsider the approach to the solution.

val resId = context.resources.getIdentifier("bomba", "string", packageName)
if (resId != 0) {
    val secretKey = context.getString(resId)
    // ...
}

Documentation:
https://developer.android.com/reference/kotlin/and...

Answer 2

HashMap<String, String> map = new HashMap<String, String>();
map.put("car", "drive");
map.put("boat", "swim");

map.get("car")

Answer 3

because when assembled, R.string.bomba becomes an integer constant