Java-检查对象数组是否包含特定字符串

Question

I'm trying to check whether an array of objects contain a specific string.

This is the constructor I have for Product object:

public Product()    
{
    name = "No name yet";
    demandRate = 0;        
    setupCost = 0;
    unitCost = 0;        
    inventoryCost = 0;
    sellingPrice = 0;        
}      

This is the initialisation of the array:

 Product[] product = new Product[3];

I found similar questions here Checking if long is in array and here Look if an array has an specified object . So I tried this code:

public boolean isAProduct(String nameOfProduct)
    //Returns true if a name has been found otherwise returns false
    {
        boolean found = false;
        int counter = 0;

        while (!found && (counter < MAXNUMBEROFPRODUCTS))
        {                
            if (Arrays.asList(product).contains(nameOfProduct))
            {                   
                found = true;
            }
            else 
            {
                counter++;
            }
        }        

        return found;
    }

But this doesn't work as it allows me to enter the same name for a product twice. So my question is, is what I'm attempting even possible? If not, how could I go about solving the problem?

Any advice would be greatly appreciated.

Answer 1

You need to create a get method to your name of product inside the Product class to enable you to get the data you want to check on each iteration of the array. you cant just compare an object with a string without accessing the String.

solution:

create a getter method in your Product class

public String getName()
{
   return this.name;
}

Iterate to all the Product class and compare string by calling the getter method for the name of the product

for(int i = 0; i < current_size_product; i++)
{
  if(product[i].getName().contains(string))
    //true
}