/* 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 bitstream = "001010100010010101001010101001010101010010101010100010101010001010101010010101";
		int len = 8;
		System.out.println(java.util.Arrays.toString(splitAfterNChars(bitstream, len)));
	}
 
	public static String[] splitAfterNChars(String input, int splitLen){
		return input.split(String.format("(?<=\\G.{%1$d})", splitLen));
	}
}

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