import java.util.regex.*;
public class RegexDemo {
public static void main(String[] args) {
String text = "f7df, qqq, www, 74sv, zzz, пет3я";
Pattern p = Pattern.compile("\\b\\w*\\d+\\w*,?\\b");
Matcher m = p.matcher(text);
while(m.find()) {
System.out.println(text.substring(m.start(), m.end()));
}
}
}