/* 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 x = Character.toString( 97 ) ;
        String y = Character.toString(  Character.toUpperCase( 97 ) ) ;
        String z = Character.toString(  Character.toTitleCase( 97 ) ) ;

        String faceWithMedicalMask = Character.toString(  Character.toTitleCase( 128_567 ) ) ;

        System.out.println( x ) ;
        System.out.println( y ) ;
        System.out.println( z ) ;
        System.out.println( faceWithMedicalMask ) ;
	}
}