基本的Java对象类返回对象为null？

Question

我只有一个基本的封装类食物，当我去我的客户端类中检查方法getName，String和所有其他方法时，它都返回null。不知道这里有什么问题。

public class Foods { 

    public String name; 
    public int calPerServing; 
    public int servingPerContainer; 

    Foods(String n, int c, int s){ 
     n = name; 
     c = calPerServing; 
     s = servingPerContainer; 
    } 

    @Override 
    public String toString() { 
     return "Name: " + name + "\nCalories Per Serving: " + calPerServing 
       + "\nServings Per Container: " + servingPerContainer; 
    } 

    public String getName() { 
     return name; 
    } 

    public int getCalPerServing() { 
     return calPerServing; 
    } 

    public int getServingPerContainer() { 
     return servingPerContainer; 
    } 

    public int getTotalCalories(){ 
     return (calPerServing * servingPerContainer); 
    } 
} 


public class Client { 

    public static void main(String[] args) { 
     Foods chips = new Foods("chips", 10, 1); 
     System.out.println(chips.getName()); 
    } 
} 

Answer 1

这是一个错字：

Foods(String n, int c, int s){ 
    n = name; 
    c = calPerServing; 
    s = servingPerContainer; 
} 

应该是：

Foods(String n, int c, int s){ 
    name = n; 
    calPerServing = c; 
    servingPerContainer = s; 
}