/* package whatever; // don't place package name! */
 
import java.util.*;
import java.util.regex.*;
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 s1 = "The demo 505/rj is bad";	
		String s2 = " demo zero 4";
		String val="demo";
		String g = s2; ////g2
		Pattern p = Pattern.compile("(?<=" + val +")\\s*\\b(?=\\S*\\d)\\S+\\b");
	    Matcher m = p.matcher(g);
		if (m.find()) {
				String s = m.group(0);
				System.out.println(s);
		}
	}
}

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