import java.util.Scanner;
 
class VerificaLetra {
	public static void main(String[] args) {
	    String sexo = " ";
	    String letra;
	    Scanner scan;
	    System.out.print("Informe o sexo. F para feminino e M para Masculino: ");
	    scan = new Scanner(System.in);
	    letra = scan.nextLine();
	    if (letra == "f" || letra == "F") sexo = "Sexo = Feminino";
	    else if (letra == "m" || letra == "M") sexo = "Sexo = Masculino";
	    System.out.println(sexo);        
    }
}
 
//https://pt.stackoverflow.com/q/187034/101

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Rgo=

F