Taking an int out from a string

Try

package testing;

import java.util.Scanner;

public class Test

{

public static void main(String[] args)

{

String s = "10+2*3=16";

Scanner scan = new Scanner(s).useDelimiter("\\D"); // <- \\D for non-digit

while (scan.hasNextInt())

System.out.println(scan.nextInt());

scan.close();

}

}

#

duckbilla at 2007-7-10 0:44:16 >

> Hi, the code doesnt work for the standard input

> channel. It doesnt display anything.

>

> I have a text file and input it in the command prompt

> like..

> java Prog <data1.txt

Then use the command line arguments (String[] args) instead of the String s. Look at the Scanner class to see if there's a constructor which take a file:

http://java.sun.com/j2se/1.5.0/docs/api/java/util/Scanner.html>

prometheuzza at 2007-7-10 0:44:16 >

import java.util.*;

public class StringToken

{

public static void main(String args[])

{

String str="1+2*3";

StringTokenizer stz=new StringTokenizer(str,"+-*/");

String str1=new String[stz.countTokens()];

int i=0;

System.out.println(stz.countTokens());

while(stz.hasMoreTokens())

{

try

{

str1[i]=stz.nextToken();

System.out.println(str1[i]);

i++;

}

catch(Exception e)

{

}

}

}

}

Message was edited by:

qUesT_foR_knOwLeDge

qUesT_foR_knOwLeDgea at 2007-7-10 0:44:16 >

Try this for ideas

Scanner scan = new Scanner(new File("filename"));

while (scan.hasNextLine())

{

String[] array = scan.nextLine().split("\\D");

for (int i = 0; i < array.length; ++i)

System.out.print(array[i] + (i == array.length - 1 ? "\n" : " "));

}

scan.close();

#

duckbilla at 2007-7-10 0:44:16 >