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/**

* Validate if a given string is numeric.

*

* Some examples:

* "0" => true

* " 0.1 " => true

* "abc" => false

* "1 a" => false

* "2e10" => true

*

* Note: It is intended for the problem statement to be ambiguous. You should

* gather all requirements up front before implementing one.

*/

public class ValidNumber65 {

public boolean isNumber(String s) {

try {

Double.valueOf(s);

} catch (Exception e1) {

return false;

}

char last = s.charAt(s.length()-1);

if(last == 'D' || last == 'd' || last == 'f' || last == 'F') return false;

return true;

}

}