Validator says updated data should be on the same line, but I see no problem

Question about the task

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Hi I don't understand where the problem is. When I update the data, the new data is on the same line in the file as before.

CrUD for a table inside a file
Read a file name for CrUD operations from the console

The program runs with one of the following sets of arguments:
-u id productName price quantity
-d id

Argument values:
where id is 8 characters
productName is 30 characters
price is 8 characters
quantity is 4 characters
-u updates the data for the product with the specified id
-d performs the physical deletion of the product with the specified id (all data related to the passed id)

The file data is stored in the following order (without separating spaces):
id productName price quantity
Each data field is padded with spaces up to its length

Example:
19847 Swim trunks, blue 159.00 12 198479 Swim trunks, black with printe173.00 17 19847983Snowboard jacket with reflecti10173.991234

Requirements:

The program should read a file name for CrUD operations from the console.
When you run the program without arguments, the product list must remain unchanged.
When the program is started with the arguments "-u id productName price quantity", the product information in the file should be updated.
When the program is started with the arguments "-d id", the line for the product with the specified id should be removed from the file.
The file streams must be closed.

19847983Snowboard jacket with reflecti10173.991234 5 Prd5Name 1.23 2 19847 Swim trunks, blue 159.00 12 198479 Swim trunks, black with printe173.00 17 19847986Pypyie 1.23 2 19847984ProductName 1.23 1234 19847985ProductName 1.23 1234

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Mayu

Level 25 , Toronto, Canada

31 July 2020, 18:11

That doesn't seem to be working for me. I added a conditional

if (productList.get(ID) != null) {
    updateProduct(ID, productName, price, quantity);
}else{
    createNewProduct(ID, productName, price, quantity);
}
writeToFile(fileName);

Nouser

Level 36 , Germany

31 July 2020, 07:17

In my solution I update the entry if it exists but add a new one otherwise