import java.util.*;

class Ideone {
	public static void main (String[] args) throws java.lang.Exception {
		String str = "(B,C) (D,E) (A,B)";
		String[] tokens = Arrays.stream(str.split("[(),\\s]+"))
			.filter(s -> !s.isEmpty()).toArray(String[]::new);
			
		System.out.println(Arrays.toString(tokens));
   }
}