How do I delete specific characters from a particular String in Java?

Question

For example I\'m extracting a text String from a text file and I need those words to form an array. However, when I do all that some words end with comma (,) or a full stop (.)

Answer 1

Note that the word boundaries also depend on the Locale. I think the best way to do it using standard java.text.BreakIterator. Here is an example from the java.sun.com tutorial.

import java.text.BreakIterator;
import java.util.Locale;

public static void main(String[] args) {
    String text = "\n" +
            "\n" +
            "For example I'm extracting a text String from a text file and I need those words to form an array. However, when I do all that some words end with comma (,) or a full stop (.) or even have brackets attached to them (which is all perfectly normal).\n" +
            "\n" +
            "What I want to do is to get rid of those characters. I've been trying to do that using those predefined String methods in Java but I just can't get around it.\n" +
            "\n" +
            "Every help appreciated. Thanx";
    BreakIterator wordIterator = BreakIterator.getWordInstance(Locale.getDefault());
    extractWords(text, wordIterator);
}

static void extractWords(String target, BreakIterator wordIterator) {
    wordIterator.setText(target);
    int start = wordIterator.first();
    int end = wordIterator.next();

    while (end != BreakIterator.DONE) {
        String word = target.substring(start, end);
        if (Character.isLetterOrDigit(word.charAt(0))) {
            System.out.println(word);
        }
        start = end;
        end = wordIterator.next();
    }
}

Source: http://java.sun.com/docs/books/tutorial/i18n/text/word.html