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";
    System.out.println(letra);
    }
    else if (letra == "m" || letra == "M") {
        sexo = "Sexo = Masculino";
    }
    System.out.println(sexo);        
    }
}

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Rgo=

F