Creating a method to transfer from a number, to binary, to a letter, to a matrix

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So I'm writing this program that simulates a coinflip with sides H and T, and its come time to create my method. The main idea behind the program is that a user should be able to enter any number b/w 1 and 511. Once the number is entered, my method should convert their number to binary, 0's being Heads, and 1's being Tails.

So once I get 000000011 perhaps, I want to print a matrix that looks like:

HHH
HHH
HTT

Anyone have an idea? Here is my code so far, however my method is empty.

import java.util.Scanner;
public class Problem8_11 {
public static void main(String[] args) {
	Scanner input = new Scanner(System.in);

	System.out.print("Enter one number between 0 and 511: ");
    int number = input.nextInt();
    
    String binaryValue = binaryConverter(number);
    
    int[][] matrix = new int[3][3];
    int binary = 0;
    
    for (int i = 0; i < matrix.length; i++) {
    		for (int x = 0; x < matrix[i].length; x++) {
            int HeadOrTails = (binaryValue.charAt(binary++) == '0') ? 0 : 1;
            		matrix[x][i] = HeadOrTails;
        }
    }
    for (int i = 0; i < matrix.length; i++) {

        for (int x = 0; x < matrix[i].length; x++) {
            char HorT = (matrix[i][x] == 0) ? 'H' : 'T';
            System.out.print(HorT + "");
        }
        System.out.println(" ");
    }

}

What I have tried:

I've tried using Charachter.isDigit but that didnt seem to be very useful. I was also told there was a binaryToString convertor but I couldnt find that.