B4J Question Possible bug

[npsonic]

This code will give exception java.lang.OutOfMemoryError: Java heap space
How is that possible or do I not understand something?

Dim s As String = File.ReadString(File.DirApp, "lorem.txt")
    
Do While s.Length > 0   
    s = s.SubString(1)
Loop

File used for test is just 100 KB of lorem ipsum

 

[stevel05]

Strings are Immutable, therefore every time you make a change to it, it creates a new string object. I would guess that creating 100000 new string objects in short order is overwhelming the garbage collector as there is no time in between the iterations for it to run.

 

[stevel05]

If you really need to do something like that, try it with stringbuilder.

 

[AnandGupta]

@npsoni , you are increasing the string s length infinately

So it is showing heap error, obviously.

Regards

Anand

 

[Erel]

Moved to the questions forum.

I'm not sure what you are trying to do but StringBuilder is the answer.