// Project: Classes
// Module: person
// Source code file: Person.java
// This Person class has fields (instance variables)
// name, gender, and age. Getters are defined for
// name and gender; a getter and setter are defined for
// age.  The haveBirthday method adds one to age.

public class Person {

    // Define instance variables
    // The instance variables are all private.
    private String name;
    private char gender;
    private int age;

    // Constructor
    public Person(String theName, char theGender, int theAge) {
        name = theName;
        gender = theGender;
        age = theAge;
    }

    // name is read-only, so no setter.
    public String getName() {
        return name;
    }

    // gender is read-only, so no setter.
    public char getGender() {
        return gender;
    }

    // age has getters and setters.
    public int getAge() {
        return age;
    }
    public void setAge(int theAge) {
        age = theAge;
    }

    public void haveBirthday( ) {
        age++;
    }

    @Override
    public String toString( ) {
        return String.format("%s %c %d", name, gender, age);
    }
}