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 str = new String("prueba.txt");
 
 
    	System.out.println(str + " " + str.matches("(.*)\\.txt"));
 
    	str = "prueba.pdf";
 
    	System.out.println(str + " " + str.matches("(.*)\\.txt"));
 
 
 
	}
 
 
 
}

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