return data type

[Nazzy]

Hello,

I am having a lot of difficulty with this program. I have to find the data types of strings that have been inputted by users into the command line. I have used StringTokenizer to break data into strings but I am not sure where to go from there. How do I take these tokens and find out what data types they are.

Thanks

[hooknc]

Do you have any test data that we could see? What is an expected input and then the corresponding output?

[Nazzy]

This is what i have so far:

// File: Classify.java

// Purpose: classifies input into primitive types or String

import java.io.*;
import java.util.StringTokenizer;

public class Classify {

public static void main(String[] args) throws IOException {
BufferedReader in = new BufferedReader(
new InputStreamReader(System.in));
String str = in.readLine();
while (str != null) {
StringTokenizer tokenizer = new StringTokenizer(str);
while (tokenizer.hasMoreTokens()) {
String token = tokenizer.nextToken();

}

str = in.readLine();
}
} // main

} // class Classify

Thanks.

[iamthwee]

This is what i have so far:

// File: Classify.java

// Purpose: classifies input into primitive types or String

import java.io.*; import java.util.StringTokenizer;

public class Classify {

public static void main(String[] args) throws IOException { BufferedReader in = new BufferedReader( new InputStreamReader(System.in)); String str = in.readLine(); while (str != null) { StringTokenizer tokenizer = new StringTokenizer(str); while (tokenizer.hasMoreTokens()) { String token = tokenizer.nextToken();

} str = in.readLine(); } } // main } // class Classify

Thanks.

Erm, that's not test data, that's your program. Tee he he.

[server_crash]

Well, you could write boolean methods like this:

boolean testInt(String s)
{
   try
   {
      Integer.parseInt(s);
   }
   catch(Exception e)
   {
      return false;
   }
   return true;
}

or something like that.