Hey i'm having trouble creating an int[] array from Strings, which should only contain positive integers from the String.

it should do something like this:

```
INPUT: ("-5, 20,  abc, -20, defg, 45ab67, 23")
OUTPUT: [20,23]

```

I don't know how to delete this substring "45ab67". I tried using 

```
Character.isDigit(c);
and
myString.replaceAll("[^\\d,-]", "");

```

It didn't work so well...

thx in advance