Make an ASCII Christmas Tree with a jshell script

tree.jsh

import java.nio.*;

String num = Files.readString(Path.of("merry-christmas.txt"));
int x = 25;

try { x = Integer.parseInt(num.trim()); } catch (NumberFormatException ex) {}

StringBuilder sb = new StringBuilder("");

for (int i = 1; i <= x; i++) { sb.append(" ".repeat(x-i)).append("*".repeat(i+(i-1))).append("\n"); }

Files.writeString(Path.of("happy-holidays.txt"), sb.toString());

/exit