public class CashRegister {

    public CashRegister()
    {
    	purchase = 0;
    	payment = 0;
    }
    public void recordPuchase(double amount)
    {
    	purchase = purchase + amount;
    }
    public void enterPayment(int dollars, int quarters, int dimes, int nickels, int pennies)
    {
    	payment = dollars + quarters* QUARTER_VALUE + dimes*DIME_VALUE + nickels*NICKEL_VALUE + pennies*PENNY_VALUE;
    }
    public void enterDollars (int dollars)
    {
    	payment = payment + dollars;
    }
     public void giveDollars (int dollars)
    {
    	payment = payment + dollars;
    }
    public void enterQuarters(int quarters)
    {
    	payment = payment + quarters*QUARTER_VALUE;
    }
    public void giveQuarters(int quarters)
    {
    	payment = payment + quarters*QUARTER_VALUE;
    }
    public void enterDimes (int dimes)
    {
    	payment= payment + dimes*DIME_VALUE;
    }
    public void giveDimes (int dimes)
    {
    	payment= payment + dimes*DIME_VALUE;
    }
    public void enterNickels (int nickels)
    {
    	payment= payment + nickels*NICKEL_VALUE;
    }
     public void giveNickels (int nickels)
    {
    	payment= payment + nickels*NICKEL_VALUE;
    }
    public void enterPennies (int pennies)
    {
    	payment= payment + pennies*PENNY_VALUE;
    }
    public void givePennies (int pennies)
    {
    	payment= payment + pennies*PENNY_VALUE;
    }
    public double giveChange()
    {
    	double change = payment - purchase;
    	purchase = 0;
    	payment = 0;
    	return change;

    }
    public static final double QUARTER_VALUE = 0.25;
    public static final double DIME_VALUE = 0.1;
    public static final double NICKEL_VALUE = 0.05;
    public static final double PENNY_VALUE = 0.01;

    public double purchase;
    public double payment;



}
public class CashRegisterTester {

    public static void main(String[] args)
    {
    	CashRegister register = new CashRegister();
    	
    	register.recordPurchase(8.37);
    	register.enterPayment(10,0,0,0,0);
    	System.out.println("Dollars: " + register.giveDollars());
    	System.out.println("Expected: 1");
    	System.out.println("Quarters: " + register.giveQuarters());
    	System.out.println("Expected: 2");
    	System.out.println("Dimes: " + register.giveDimes());
    	System.out.println("Expected: 1");
    	System.out.println("Nickels: " + register.giveNickels());
    	System.out.println("Expected: 0");
    	System.out.println("Pennies: " + register.givePennies());
    	System.out.println("Expected: 3");
    }
    
    
    
}
public class CashRegisterTester {

    public static void main(String[] args)
    {
    	CashRegister register = new CashRegister();
    	
    	register.recordPurchase(8.37);
    	register.enterPayment(10,0,0,0,0);
    	System.out.println("Dollars: " + register.giveDollars());
    	System.out.println("Expected: 1");
    	System.out.println("Quarters: " + register.giveQuarters());
    	System.out.println("Expected: 2");
    	System.out.println("Dimes: " + register.giveDimes());
    	System.out.println("Expected: 1");
    	System.out.println("Nickels: " + register.giveNickels());
    	System.out.println("Expected: 0");
    	System.out.println("Pennies: " + register.givePennies());
    	System.out.println("Expected: 3");
    }
    
    
    
}

Who knows? You didn't post the tester class.

Method definition:

public void giveDollars (int dollars)

Method call:

register.giveDollars());

Number and types of parameters should match.

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