Testing for an integer in java

I was just wondering if there was a simple and easy way to test if a string(single char string) is a number.

Maybe some method I do not know about, or maybe something like

if (string[1].equals(\\#))

Any thoughts?

>>6
Aww shit, premature postaculation.

For floating point numbers:
/^\s*-?(?:\.\d+|\d+(?:\.\d*)?)(?:[Ee][+-]?\d+)\s*$/