while trying to automate keyPress event in a loop, I get the error: "Unrecognized function or variable 'VK_i'

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I am trying to automate/simualte the keyboard to automatically generate/type numbers using the java robot class and I running into the following error: Unrecognized function or variable 'VK_i'. Could someone help. Here is my code snippet:
clc; clear; close all;
import java.awt.Robot;
import java.awt.event.*;
import java.awt.event.KeyEvent;
keybrd = java.awt.Robot; %Create a keyboard object
for i = 1:3
%num = num2str(i);
key = java.awt.event.KeyEvent.VK_i;
keybrd.keyPress(key);
keybrd.keyRelease(key);
end

採用された回答

Voss
Voss 2022 年 8 月 8 日
key = java.awt.event.KeyEvent.(sprintf('VK_%d',i));
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