Why this is always returning false for boolean?

Why this is always returning me "not Ground Coffee" or false for public boolean groundCoffee?
Thanks in front...

This result:

/*{Nescafe, Minas}
------------------------PRODUCTS------------------------
Coffe{ not groundCoffee Product{name=Nescafe, price=780.89, expireDate=20/06/2019}
Coffe{ not groundCoffee Product{name=Minas, price=360.19, expireDate=02/12/2018}
Nescafe, 843.36
Minas, 389.01
This is code:
*/
public class Product {
protected String name;
protected double price;
protected String expireDate;
public Product(String name, double price, String expireDate) {
this.name = name;
this.price = price;
this.expireDate = expireDate;
}
public double pricePlusTaxes(){
return price;
}
public String getname() {
return name;
}
public void setIme(String ime) {
this.name = name;
}
public double getCena() {
return price;
}
public void setCena(double cena) {
this.price = price;
}
public String getRokTrajanja() {
return expireDate;
}
public void setRokTrajanja(String rokTrajanja) {
this.expireDate = rokTrajanja;
}
@Override
public String toString() {
return "Product{" + "name=" + name + ", price=" + price + ", expireDate=" + expireDate + '}';
}
}
public class Coffee extends Product {
public int codeForIsGroundCoffee;
public boolean groundCoffee;
public Coffee(int codeForIsGroundCoffee,String name, double price, String expireDate) {
super(name, price, expireDate);
this.codeForIsGroundCoffee = codeForIsGroundCoffee;
}
@Override
public double pricePlusTaxes(){
return price * 1.08;
}
public boolean isgroundCoffee() {
return groundCoffee;
}
public void setGroungCoffee(int codeForIsGroundCoffee) {
if (codeForIsGroundCoffee == 1){
groundCoffee = true;
}else{
groundCoffee = false;
}
}
@Override
public String toString() {
if(groundCoffee){
return "Coffe{" + " ground Coffee " + super.toString();
}
return "Coffe{" + " not groundCoffee " + super.toString();
}
}
public class Runner2 {
private static List<Product> list = new ArrayList<>();
public static void addProduct(Product p) {
list.add(p);
}
public static void DeleteProduct(Product p) {
list.remove(p);
}
public static void PrintProductName(List<Product> list) {
System.out.print("{");
for (int i = 0; i < list.size() - 1; i++) {
System.out.print(list.get(i).getname()+ ", ");
}
System.out.println(list.get(list.size() - 1).name + "}");
}
public static void printListOfProducts(List<Product> lista){
System.out.println("------------------------PROIZVODI------------------------");
for(Product p : lista){
System.out.println(p);
}
}
public static void printProductPrice(List<Product> lista){
for(Product p : lista){
System.out.printf("%s, %.2f\n", p.name, p.pricePlusTaxes());
}
}
public static void main(String[] args) {
Coffee nes = new Coffee(1, "Nescafe", 780.89, "20/06/2019");
Coffee minas = new Coffee(2, "Minas", 360.19, "02/12/2018");
addProduct(nes);
addProduct(minas);
PrintProductName(list);
printListOfProducts(list);
printProductPrice(list);
}
}
</details>
# 答案1
**得分**: 1
问题在于你没有调用setGroundCoffee。即使你在构造函数中提供了1，你仍需要调用setGroundCoffee。成员变量`codeForIsGroundCoffee`实际上并没有被使用，因为在调用setGroundCoffee时，它会隐藏该值。
移除codeForIsGroundCoffee，只使用一个布尔值。然后在构造函数和设置方法中简单地设置为true/false。
```java
public Coffee(boolean groundCoffee, String name, double price, String expireDate) {
super(name, price, expireDate);
this.groundCoffee = groundCoffee;
}

       public Coffee(boolean groundCoffee, String name, double price, String expireDate) {
            super(name, price, expireDate);
            this.groundCoffee = groundCoffee;
        }

答案2

得分: 0

以下是您提供的代码的翻译部分：

所以，我必须承认，尽管您并没有完全回答我的问题，但您确实帮助了我解决了争论。关于咖啡类的代码如下所示。

public class Coffee extends Product {
    public int codeForIsGroundCoffee;
    public int value;
    boolean groundCoffee;

    public Coffee(int value, String name, double price, String expireDate) {
        super(name, price, expireDate);
        this.value = value;
        this.groundCoffee = (value == 1);
    }

    @Override
    public double pricePlusTaxes() {
        return price * 1.08;
    }

    @Override
    public String toString() {
        if (groundCoffee) {
            return "咖啡是地咖啡 " + super.toString();
        }
        return "咖啡不是地咖啡 " + super.toString();
    }
}

或者是这样的：

public class Coffee extends Product {
    public int codeForIsGroundCoffee;
    public int value;
    boolean groundCoffee;

    public Coffee(int value, String name, double price, String expireDate) {
        super(name, price, expireDate);
        this.value = value;
        this.groundCoffee = gc(value);
    }

    public boolean gc(int value) {
        if (value == 1) {
            return true;
        } else {
            return false;
        }
    }

    @Override
    public double pricePlusTaxes() {
        return price * 1.08;
    }

    @Override
    public String toString() {
        if (groundCoffee) {
            return "咖啡是地咖啡 " + super.toString();
        }
        return "咖啡不是地咖啡 " + super.toString();
    }
}

public class Coffee extends Product {
public int codeForIsGroundCoffee;
public int value;
boolean groundCoffee ; 
public Coffee(int value,String name, double price, String expireDate) {
super(name, price, expireDate);
this.value = value;
this.groundCoffee = (value==1);
}
@Override
public double pricePlusTaxes(){
return price * 1.08;
}
@Override
public String toString() {
if(groundCoffee){
return "Coffe is {" + " ground Coffee " + super.toString();
}
return "Coffe{" + " not groundCoffee " + super.toString();
}
}

public class Coffee extends Product {
public int codeForIsGroundCoffee;
public int value;
boolean groundCoffee  ; 
public Coffee(int value,String name, double price, String expireDate) {
super(name, price, expireDate);
this.value = value;
this.groundCoffee = gc(value);
}
public boolean gc(int value){
if (value == 1){
return true;
}else
return false;
}
@Override
public double pricePlusTaxes(){
return price * 1.08;
}
@Override
public String toString() {
if(groundCoffee){
return "Coffe is {" + " ground Coffee " + super.toString();
}
return "Coffe{" + " not groundCoffee " + super.toString();
}
}