i want to make it where i can get the string (2,p1, and 32) from the sentence "at 2 add p1 32"

1 import java.util.Scanner; 2 3 public class call { 4 5 public static void main(String[] args) { 6 Scanner in = new Scanner(System.in); // at 2 add p1 32 8 //01 23 456 7 89 10 11 12 9 String n = in.next(); 10 System.out.println(n); 11 String w = n.substring(3); 12 System.out.println(); 13 14 15 } 16 17 } 18 A Problems @ Javadoc Declaration Console X call [Java Application] C:\Program Files Vava\jre 1.8.0_221\bin\javaw.exe (Jan 30, 2021, 3:49:40 PM) at 2 add at Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: -1 at java.lang.String.substring(Unknown Source) at call.main(call.java:11)