AI code review: test 02 - #7

In the HttpApplicationSettings class, there is a method called accountsRequestUrlFrom that constructs a URL string. The current implementation uses string concatenation to build the URL, which can be error-prone and less efficient. Consider using java.net.URI or java.net.URL classes to construct the URL instead.

In the same accountsRequestUrlFrom method, the code appends the account IDs to the URL by manually constructing a JSON array string. This approach is not recommended as it can lead to formatting errors and potential security vulnerabilities. Instead, consider using a JSON library (e.g., Jackson) to serialize the account IDs into a JSON array.

Similarly, in the storeRequestUrlFrom method, the code manually constructs a JSON array string for request IDs and imp IDs. Again, this approach should be replaced with a proper JSON serialization library.

The joinIds method in the HttpApplicationSettings class uses String.join to concatenate the IDs with a comma separator. However, according to the JSON specification, the IDs should be separated by a comma surrounded by double quotes ("%22,%22") when used in a URL parameter. Update the joinIds method to use the correct separator format.

At the end of the HttpApplicationSettings class, there is no newline at the end of the file. It is recommended to add a newline to comply with coding conventions.