Question

Write a program that extracts words from a string. Words are sequences of characters that are at least two symbols long and consist only of English alphabet letters. Use regex.

Examples:

 

Answer 1

Interesting task! For the Java regex, I am using this site: http://regexr.com/

Anyways, here's my solution:

import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Pr_05_ExtractWords {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String input = scanner.nextLine();

        Pattern pattern = Pattern.compile("([a-zA-Z]+)");
        Matcher matcher = pattern.matcher(input);

        while (matcher.find()) {
            System.out.print(matcher.group() + " ");
        }
    }
}