New to Java

how to make user input bold

import java.util.Scanner;

public class magic 
{

    public static void main(String[] args) 
    {
            int userNumber;
            Scanner keyboard = new Scanner (System.in); 
            Scanner sc=new Scanner(System.in);
                    
           
  System.out.println("Reorder the rest of the digits and type them in here:"); 
  userNumber = keyboard.nextInt()        
      }
    

    
}

the number the user enters for userNumber will be entered in bold.