Computer Science Canada

Is there a strintok/intstrok function in java?
Author:  JayLo [ Mon Apr 05, 2004 5:13 pm ]
Post subject:  Is there a strintok/intstrok function in java?
I was just wondering if there was a function to check if a string could be parsed as an integer/double or vice versa. Any takers? Surprised
Author:  nate [ Mon Apr 05, 2004 6:03 pm ]
Post subject: 
code:


%Going from string - integer
int number = Integer.parseInt("10");

%Going from string - double
double number = Double.parseDouble("10.2");

%Going from double or integer - string
String word = number.toString();


Hope that helps you
Author:  JayLo [ Mon Apr 05, 2004 9:05 pm ]
Post subject: 
thanks for that review, nate. yes, i know that integer.parseint (mind my capitalization) is to parse strings to int, but i was asking for a command to CHECK if a string variable can be parsed.

for example
code:
String reply;
reply = JOptionPane.showInputDialog("This sucks");
insert checker here.
Author:  wtd [ Mon Apr 05, 2004 9:42 pm ]
Post subject: 
code:
import java.lang.*;
import java.io.*;
import java.util.*;
import java.util.regex.*;

class Test {
   public static boolean checkForIntegers(String input) {
      Pattern intPattern = Pattern.compile("\d+");
      Matcher intMatcher = intPattern.matcher(input);
      return intMatcher.matches();
   }

   public static void main(String[] args) {
      BufferedReader keyboard = new BufferedReader(
         new InputStreamReader(System.in));
      String userInput = keyboard.readLine();
      if (checkForIntegers(userInput))
         System.out.println("\"" + userInput + "\" contains an integer");
      else
         System.out.println("\"" + userInput + "\" does not contain an integer");
   }
}
Author:  nate [ Mon Apr 05, 2004 9:47 pm ]
Post subject: 
oh, sorry!!
lol
i just read string - int and was like "Hey i know that".

Oh well, i learned something new. Thanks WTD

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