Help needed: Basic subtraction problems

[Mobix]

I'm trying to found out how to do basic subtraction in java. I'm semi-new so I don't know everything, and everywhere I search all I can find is how to make a calculator.
All I want to do is print a subtraction between two integers. I have tried doing,

System.out.print(balance-price);

but I am getting errors. Some places have told me to use two dashes but that doesn't work either. Please help!

[JosAH]

but I am getting errors.

You've made us so curious; what errors? Oh, the suspense ...

kind regards,

Jos

[Mobix]

You've made us so curious; what errors? Oh, the suspense ...

kind regards,

Jos

bad operand types for binary '-'
first type: java.lang.String; second type: int


Im using BlueJ here is the full code

public class TicketMachine{
    private int price;
    private int balance;
    public TicketMachine(int ticketPrice){
        price = ticketPrice;
        balance = 0;
    }
    public void insertMoney(int moneyAmount){
        balance = balance+moneyAmount;
    }
    public int getPrice(){
        return price;
    }
    public int getBalance(){
        return balance;
    }
    public void buyTicket(){
        if(balance < price){
            System.out.println("You do not have enough money to purchase a ticket. ");
            System.out.print("You need " + price-balance + " more dollars for a ticket.");
        }
        else if(balance >= price){
            System.out.println("Here is your ticket. Your change is ");
            System.out.print(balance-price);
            System.out.println("Enjoy your day.");
        }
    }
}

[JosAH]

bad operand types for binary '-'
first type: java.lang.String; second type: int

            System.out.print("You need " + price-balance + " more dollars for a ticket.");

This is the line where your compiler complained, right? Add parentheses around (price-balance) and you're in business.

kind regards,

Jos

[Mobix]

This is the line where your compiler complained, right? Add parentheses around (price-balance) and you're in business.

kind regards,

Jos

Thank You