Call a function by String name

Question

In JavaFX, how can one call a function based on it's String name?
For example, if I had a sequence like ["one","two","three"] how could I call functions one(), two(), and three() by referencing the sequence?
In other words, what is a better way to do:
if (sequence[x] == "one")
    one();
if (sequence[x] == "two")
    two();
if (sequence[x] == "three")
    three();Thanks in advance.

Answer 1

Here is a plain old JavaFX class (a pofxo?) with three methods one, two and three.
package reflectionexample;
public class FunctionInvocationExample {
    public function one() {
        println("One");
    public function two(message : String) {
        println("Two - {message}");
    public function three() {
        println("Three");
}So this class has no knowledge of anything to do with reflection, it will be what we will invoke with the code below...
(place this in some other class file - or a function that gets invoked somehow)
package reflectionexample;
import java.lang.Class;
import javafx.reflect.FXLocal;
import javafx.reflect.FXType;
import javafx.reflect.FXValue;
// create the example object
var example = FunctionInvocationExample{}
var exampleObjectValue = FXLocal.getContext().mirrorOf(example);
var exampleClassType = exampleObjectValue.getClassType();
var argumentTypesForOne : FXType[];
var functionOne = exampleClassType.getFunction("one", argumentTypesForOne);
var argumentValuesForOne : FXValue[];
// Invoke function "one"
functionOne.invoke(exampleObjectValue, argumentValuesForOne);
// To invoke function "two" we need more stuff around the argument types and values
var stringClass = Class.forName("java.lang.String");
var stringType = FXLocal.getContext().makeTypeRef(stringClass);
var argumentTypesForTwo = {stringType};
var functionTwo = exampleClassType.getFunction("two", argumentTypesForTwo);
var message = "Hello World";
var messageValue = FXLocal.getContext().mirrorOf(message, stringType);
var argumentValuesForTwo = {messageValue};
// Invoke function "two"
functionTwo.invoke(exampleObjectValue, argumentValuesForTwo);Which when you run it will produce the following...
standard-run:
One
Two - Hello World