NewPipeExtractor/utils/Utils.java

package org.schabi.newpipe.extractor.utils;

public class Utils {
    private Utils() {
        //no instance
    }

    /**
     * Remove all non-digit characters from a string.<p>
     * Examples:<br/>
     * <ul><li>1 234 567 views -> 1234567</li>
     * <li>$ 31,133.124 -> 31133124</li></ul>
     *
     * @param toRemove string to remove non-digit chars
     * @return a string that contains only digits
     */
    public static String removeNonDigitCharacters(String toRemove) {
        return toRemove.replaceAll("\\D+", "");
    }
}