public class Token implements Visitable {
    private String str;
    private static String accumulator;

    public Token (String str) {
        this.str = str;
    }

    public static void clearAccumulator () {
	accumulator = "";
    }

    public static String getAccumulator () {
	return accumulator;
    }

    public void visit () {
        accumulator += str + " ";
    }
}