Converting large binary strings to integers (java)

[Wimnat]

I need to convert some large strings of binary numbers to integers.

I was using Integer.parseInt(myString, 2) which was working fine but now I have strings up to 32 bits long and I get a numberFormatException thrown. I imagine it is because the size of the number exceeds the memory allocated for an integer. I can't use BigInteger because .parseInt will only return an int.

Any ideas how to solve this problem?

 

[Phil99]

I think from something similar I did earlier this year you have to use Long as opposed to Integer, so Long.parseLong(myString,2);

 

[Wimnat]

D'oh! So obvious! Cheers matey

 

[Visage]

If you want your app to be truly scaleable (and to avoid having a similar problem if your numbers outgrow the long datatype), perhaps you should consider using a BigInteger. It has a constructor that takes a string and a radix.