Need help to improve my budget allocation program

package budget;

import java.util.Scanner;

public class budget{
    public static void main(String[] args) {
        
        double budgetMonth;
        double expenses;
        double totalExpenses = 0.0;
        double balance;
        
        
        Scanner keyboard = new Scanner(System.in);
        
        System.out.print( "What is your monthly budget?\n $");
        budgetMonth = keyboard.nextDouble();
        
        do {
            System.out.print("Enter expenses: $");
            expenses = keyboard.nextDouble();
            System.out.println();
            
            totalExpenses += expenses;
            
            System.out.println("Add another or enter 0 to calculate your balance...");
            
           
        } while (expenses > 0);
        
        balance = budgetMonth - totalExpenses;
        
        if ( balance < 0) {
            System.out.println(" You are over budget by: $" + balance );
        }
        else if (balance > 0) {
            System.out.println("You are under budget. Your remaining balance is: $" + balance);
        }
        else {
            System.out.println("You spent your budget" + balance);
        }
    }
}