Need help!!!

[rpark712]

Hello I'm trying to create a program that helps me manipulate the numbers inside a dat file.

This is the data inside the dat file.
These are random street addresses and I need to find a way to isolate the prime numbers in the address.
But the problem is that the dat file is stored in a String data type and i need to put the street numbers in a double data type.

10
10441 Rogers Circle
201 Lexus Dr
10352 Alexis Ave
601 Lazy Day Lane
123 May St
2356 Larry Lane
2011 Bee Cave Rd
1111 Hillcrest St
1515 Linden Dr
20873 Longhorn Dr

For example how can I put the number 10441 in a double?

I have no idea how to convert a String into a double.

[KevinWorkman]

First off, you should probably use a more meaningful title for your post. Otherwise people will have no idea what the post is about and will skip over it. I'd recommend reading the link in my signature on asking questions the smart way.

What exactly are you asking? What numbers? Why doubles? The short answer is "yes". What have you tried? Where are you stuck? Post an SSCCE, and we'll go from there.