/* 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
	{
  	  Pattern p = Pattern.compile("\\d+");
      Matcher m = p.matcher("ab56ef");
      System.out.println("Pattern is " + m.pattern());
      while (m.find()) {
        System.out.print("index: " + m.start() + " " + m.group());
      }
	}
}

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