check whether returned vector element is String or integer

[Amar Samant]

My Vector is returning elements such as [100,T009]

is it possible to check it whether the returned value is integer or string

i.e if it returns T009 then i want to get it recognized as String and if it returns 100 then i want to get it recognized as Integer.

[Balasubramanian Chandrasekaran]

Originally posted by Amar Samant:
My Vector is returning elements such as [100,T009]

is it possible to check it whether the returned value is integer or string

i.e if it returns T009 then i want to get it recognized as String and if it returns 100 then i want to get it recognized as Integer.

Can you post the code which you used for returning Vector...

[Alonso Faust]

You could use matcher(String).find() to check if a vector element loaded to a String contains non-digit characters and should therefore be pulled as a String. EG:

String s = "T009", d = "100";
Pattern p = Pattern.compile("\\D"); //Search for non-digits (Remember the double backslash)
 
boolean scheck = p.matcher(s).find(); //Returns true if it finds non-digits
boolean dcheck = p.matcher(d).find(); //Returns false since it doesn't find non-digits
 

Java.Sun.Com has a complete listing of regex's to compile in Pattern.

[Amar Samant]

Thanks ,i tried it by using Vector.get(i).toString().matches("[a-zA-Z].*\\d.*") by giving a pattern it is working for elements like [T009, 100] but it is failing for [T009,009T,100]

[Alonso Faust]

That's because the Pattern.matches() function returns true if AND ONLY IF the string matches the specified character sequence exactly. e.g.: the sequence "[a-zA-Z].\\d" will return true ONLY when the string starts with a sequence of letters and then contains some digits ("T009" returns True). If there is another non-digit character after the digits (or more) it will return false ("T009a" returns false). {note: "T009a" will return true with your sequence "[a-zA-Z].*\\d.*" because of the trailing *}

By compiling the pattern first, you can use the matcher.find() function which will return true if the sequence is found ANYWHERE in the string.
[ December 21, 2007: Message edited by: Alonso Faust ]