import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.stream.*;
import java.util.regex.*;
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String str = "(A,1),(Y,4),(F,5)";
		Pattern filerRegx = Pattern.compile("\\(\\s*([^()]*)\\s*\\)");
    		Matcher regexMatcher = filerRegx.matcher(str);
    		System.out.println( Stream.of(str.split(",")).
            		filter(s -> regexMatcher.find() && regexMatcher.group(1) != null).
	            	map(r -> new String(regexMatcher.group(1))).
            		collect(Collectors.toList()) );
	}
}

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