/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String stringa = "11111110000000000";
		List<String> result = new ArrayList<>();
 
		for (int endIndex = stringa.length(); endIndex  >= 0; endIndex  -= 4) {
			int beginIndex = Math.max(0, endIndex - 4);
			String str = stringa.substring(beginIndex, endIndex);
			//System.out.println(str);
			result.add(0, str);
                }
 
		System.out.println(result);
	}
}

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