StringToCharSequences.java

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.function.Function;

public class StringToCharSequences implements Function<String, CharSequence[]> {
	final private char delimiter;

	public StringToCharSequences(char delimiter) {
		this.delimiter = delimiter;
	}

	@Override
	public CharSequence[] apply(String s) {
		AtomicInteger i = new AtomicInteger(0);
		List<StringBuilder> list = new ArrayList<>();
		list.add(new StringBuilder());
		s.chars().forEachOrdered(c -> {
			if (c == delimiter) {
				i.incrementAndGet();
				list.add(new StringBuilder());
			} else {
				list.get(i.get()).append((char) c);
			}
		});
		return list.toArray(new CharSequence[list.size()]);
	}
}