New to Java

hello to all,

public class Person
{
    protected String name;  
    protected String gender;      
    protected int dateOfBirth;
    protected String address;
    protected String natInsceNo;
    protected String phoneNo;
    protected static int counter;//class variable


public Person(String nme,String addr, char sex, int howOld, String ins,String phone)
{
    dateOfBirth = howOld;
    gender = sex;
    name = nme;
    address = addr;
    natInsceNo = ins;
    phoneNo = phone;
    counter++;
}    

public String getGebder()
{
	   if (gender == 'm' || gender == 'M')
		   return "Male";
	   else if (gender == 'f' || gender == 'F')
		   return "Female";
	   else 
		   return "Wrong Input";
}

on this code, the user insert a char and the programs returns a String
could you please tell how to make the conversion?
thank you in advanced!