Bug? NumberFormatException on a string date

[udg]

Hi,
I can't say if things were always like this, but recently I found that comparing two string whose values are dates causes the error in the subject

java.lang.NumberFormatException: For input string: "2023-01-18"

'm1 is a map read as the Value of an XCLV item
Dim status As Int = m1.Get("ostatus")
Dim oday As String = m1.Get("oday")
If (status = 0) And (oday>= B4XPages.MainPage.AppGlobals.TestDay) Then   'TestDay = "2023-01-18"

No problem to convert everything to long values, but why java looks at my string as a number?

Update: even writing like this will fail: oday.As(String)>= B4XPages.MainPage.AppGlobals.TestDay.As(String)

 

[emexes]

No problem to convert everything to long values, but why java looks at my string as a number?

Use String method .CompareTo()

https://www.b4x.com/android/help/core.html#string_compareto

I too used to wonder why String comparison operators = and <> were implemented but < <= >= > were not.

 

[udg]

That's true. Converting original test to the following, works ok and doesn't need an explicit prior conversion to long values:

If (status = 0) And  (oday.CompareTo(B4XPages.MainPage.AppGlobals.TestDay)>=0)  Then

Maybe a warning like "operator not applicable to string type" or something like that could be useful.
Anyway, now the error message is clearer to me. It means ("since >= operator applies to numbers and operands aren't, than here its is your error.."