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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?