Hey guys,
Thanks for all your help! I figured it out and it's running fine!
in the end, this is what i ended up with:
import java.util.Scanner;
public class Q2 {
/**
* @param args
*/
public static void main(String[] args) {
Scanner enterFirstName= new Scanner (System.in);
String firstName;
System.out.println("Car Registration Number Generator");
System.out.println("");
System.out.println("Please enter your first name:");
firstName= enterFirstName.next();
int nameLength= firstName.length();
int letterOneNumber= 0+ (int) (Math.random()*nameLength);
int letterTwoNumber= 0+ (int) (Math.random()*nameLength);
int letterThreeNumber= 0+ (int) (Math.random()*nameLength);
char letterOne= firstName.charAt(letterOneNumber);
char letterTwo= firstName.charAt(letterTwoNumber);
char letterThree= firstName.charAt(letterThreeNumber);
String letterOneRego= Character.toString(letterOne);
String letterTwoRego= Character.toString(letterTwo);
String letterThreeRego= Character.toString(letterThree);
String letterOneRegistration= letterOneRego.toUpperCase();
String letterTwoRegistration= letterTwoRego.toUpperCase();
String letterThreeRegistration= letterThreeRego.toUpperCase();
String registrationLetters= letterOneRegistration + letterTwoRegistration + letterThreeRegistration;
int licensePlateNumber = 100 + (int) (Math.random()*999);
System.out.println("Your registration number is: " + registrationLetters + " " + licensePlateNumber);
Thanks again for all your help!