Extracting words from a string using delimiters

[toad]

I need to write a program that extracts words from a string using spaces and punctuation marks as delimiters. Enter the string from an input dialog box.

Here is my code so far.

Code:

import java.util.*;
import javax.swing.JOptionPane;

public class Exercise8_18 {
    /**Main method*/
        public static void main(String[] args) {
        // Receive text entered from the dialog box
        String s = JOptionPane.showInputDialog(
        "Enter a sentence using punctuation:");
        String delims = "[\\s\\p{Punct}]+";
        String[] tokens = str.split(delims);  
                
        System.out.println("The extracted words are:");
        
                System.exit(0);
    }
}

Here is the error message I am getting:

Code:

Exercise8_18.java:11: cannot find symbol
symbol  : variable str
location: class Exercise8_18
        String[] tokens = str.split(delims);  
                          ^
1 error
sprouts-computer:~/Desktop sprout$

Am I close or way off base?

[toad]

I think I need to use the variable string, but I haven't defined it yet. I'm pretty sure I should substitute it with the String that was entered into the dialog but I do not know how to do this.

Any help is greatly appreciated.

[unhurt]

hmm i don't know about this but i would do it the hard way which is charAt() and then replace lol... but anyway don't bother about my way its kinda long way but if not mistaken there is another thread on this i think u should check it out

[hardwired]

Code:

Exercise8_18.java:11: cannot find symbol
symbol  : variable str

Java cannot find a declaration for the variable "str" - it has not been declared.
You did however declare a string "s" and you saved the user input in it.

Code:

public class Exercise8_18 {
    /**Main method*/
    public static void main(String[] args) {
        // Receive text entered from the dialog box
        // Save it in local variable "s".
        String s = JOptionPane.showInputDialog("Enter a sentence " +
                                               "using punctuation:");
        String delims = "[\\s\\p{Punct}]+";
        // Split the String "s":
        String[] tokens = s.split(delims);  
                
        System.out.println("The extracted words are: " +
                            java.util.Arrays.toString(tokens));

[baskar.nitt]

Extracting words using StringTokenizer: (try this out)

Code:

Stirng s = JOptionPane.showInputDialog("Enter a sentence using punctuation:");

	String delims = ",. ";

StringTokenizer st = new StringTokenizer(s, delims);
		System.out.println("No of Token = " + st.countTokens());

		 while (st.hasMoreTokens())
		 {
			 System.out.println(st.nextToken());
		 }