How do I convert a string into a decimal

I've been tryin to convert a string into decimal but I can't get it to work at all. I keep getting an exception.
I've tried all of these:
double myDouble = Double.valueOf(string).doubleValue();
int myint = Interger.parseInt(string);
float myfloat = Float.parseFloat(string);
I can't get anything to work.
That string i'm reading in is an array containing values with decimals. ex: -45.09348
All the above work fine if there is no decimal, but fails when it comes to one.
How do I go about doing this?
Thanks!

This works for me:String s = "-45.6789";
double d = Double.parseDouble(s);
System.out.println(d);Mark

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