/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.*;
 
/* 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 s = "aa?bb";
		String separator = "?";
		String results[] = s.split(Pattern.quote(separator));
		System.out.println(Arrays.toString(results));
	}
}

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