the application gives you an order summary when squeezing the whipped cream box should add a dollar to the price, but this does not work

the application gives you an order summary when squeezing the whipped cream box should add a dollar to the price, but this does not work

/** * IMPORTANT: Make sure you are using the correct package name. * This example uses the package name: * package com.example.android.justjava * If you get an error when copying this code into Android studio, update it to match teh package name found * in the project's AndroidManifest.xml file. **/

package com.example.android.justjava;
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import android.text.Editable;
import android.view.View;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.TextView;
import java.text.NumberFormat;
import java.util.jar.Attributes;
import androidx.appcompat.app.AppCompatActivity;

/**
 * This app displays an order form to order coffee.
 */
public class MainActivity extends AppCompatActivity {
    int quantity = 0 ;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    /**
     * This method is called when the order button is clicked.
     */
    public void submitOrder(View view) {
        CheckBox whippedCreamCheckBox = (CheckBox) findViewById(R.id.Whipped_cream_CheckBox);
        boolean hasWhippedCream = whippedCreamCheckBox.isChecked();
        CheckBox chocolateCheckBox = (CheckBox) findViewById(R.id.Chocolate_CheckBox);
        boolean hasChocolate = chocolateCheckBox.isChecked();
        EditText nameEditText = findViewById(R.id.Name_view);
        String name = nameEditText.getText().toString();
        int price = calculatePrice();
        displayMessage(createOrderSummary(price, hasWhippedCream, hasChocolate, name ) );
    }




    /**
     * Calculates the price of the order.
     *
     * @return total price
     */
   private int calculatePrice() {

        boolean addWippedCream = false;
        if (addWippedCream  )
            return (quantity * 5) + 1;
        else {
            return   quantity *5;
        }
    }




    /**
     * This method is called when the plus button is clicked.
     */
    public void increment(View view) {

        quantity = quantity + 1;
        displayQuantity(quantity);

    }

    /**
     * This method is called when the minus button is clicked.
     */
    public void decrement(View view) {
        quantity = quantity - 1;
        displayQuantity(quantity);

    }

    private String createOrderSummary(int price, boolean addWippedCream, boolean addChocolate, String name ){
        String priceMessage ="Name : " + name ;
        priceMessage += "\nAdd whipped cream? " + addWippedCream;
        priceMessage += "\nAdd chocolate? " + addChocolate;
        priceMessage += "\nQuantity:" + quantity;
        priceMessage += "\ntotal =  $ " + price  ;
        priceMessage += "\nthank you!";
        return priceMessage;
    }

    /**
     * This method displays the given quantity value on the screen.
     */
    private void displayQuantity(int number) {
        TextView quantityTextView = (TextView) findViewById(R.id.quantity_text_view);
        quantityTextView.setText("" +number);
    }

    
    /**
     * This method displays the given text on the screen.
     */
    private void displayMessage(String message) {
        TextView orderSummaryTextView = (TextView) findViewById(R.id.order_Sammury_text_view);
       orderSummaryTextView.setText(message);
}
}