Answers for "class Person { private String lastName; private String firstName; private int cardNumber;"

class Person { private String lastName; private String firstName; private int cardNumber;

import java.io.*;

/**
 * Class Person
 * This class holds a person's information, such as first name, last name and birthdate,
 * And methods to set and get a person's information.
 * @author Li Jin
 * @version 1.0
 * This is a sample for CISC370. Any suggestions are welcome!
 */

public class Person{
    private String firstName;
    private String lastName;
    private MyDate birthDate;



    public Person(){
	firstName=null;
	lastName=null;
	birthDate=new MyDate();
    }
    public Person(String lasName, String firstName){
	this.firstName=firstName;
	this.lastName=lastName;
	birthDate=new MyDate();
    }
    public Person(String lastName, String firstName, MyDate birthDate){
        this.firstName=firstName;
        this.lastName=lastName;
        this.birthDate=birthDate;
    }

    /**
     * getFirstName returns the first name of the person.
     */

    public String getFirstName(){
        return firstName;
    }
    public String getLastName(){
        return lastName;
    }
    public MyDate getBirthDate(){
        return birthDate;
    }

    /**
     * getName returns the full name of the person, last name first,
     * with a comma between the last and first name.
     */

    public String getName(){
	return lastName+","+firstName;
    }

    public void setFirstName(String firstName){
	this.firstName=firstName;
    }
    public void setLastName(String lastName){
        this.lastName=lastName;
    }
    public void setBirthDate(MyDate date){
        birthDate=date;
    }
    public void setBirthDate(int month, int day, int year){
        this.birthDate.setYear(year);
	this.birthDate.setMonth(month);
	this.birthDate.setDay(day);
    }
    public boolean equalBirthDate(Person person){
        if(this.birthDate.equals(person.getBirthDate()))
            return true;
        else return false;
    }
    public String toString(){
        return lastName+","+firstName+" "+birthDate.toString();
    }
    /**
     * input a person's name from screen.
     * I just put all methods related to person in this class. But it is not necessary. You can put it in Menu class or ...
     * There are many diffirent ways to manage classes and methods.
     */
    public void setNameFromScreen(BufferedReader reader){
	String[] name;
        try{
            System.out.println("Plase input name (Last, First):");
            name=reader.readLine().split(",");
            this.setLastName(name[0]);
            this.setFirstName(name[1]);
        }
        catch (Exception e){
            e.printStackTrace();
        }
        return;
    }
    /**
     *check if this person's name appears in a file
     */
    public boolean existInFile(String fileName){
        BufferedReader reader;
        String line;
        int index=-1;
        String[] inputDate;
        try{
            reader=new BufferedReader(new FileReader(fileName));
            while((line=reader.readLine())!=null){
                index=line.indexOf(" ");
                if(index!=-1){
                    if(line.substring(0,index).equalsIgnoreCase(this.getLastName()+","+this.getFirstName())){
                        inputDate=line.substring(index+1).split("/");
                        this.setBirthDate(Integer.parseInt(inputDate[0]), Integer.parseInt(inputDate[1]), Integer.parseInt(inputDate[2]));
                        return true;
                    }
                }
            }
            reader.close();
        }
        catch(Exception e){
            e.printStackTrace();
        }
        return false;
    }
}