Run-time errors--need help

Question

Hi everyone,
I'd greatly appreciate some help with this java program...here's the problem:
Create a class Person that does the following:
1. Set the Last Name only
2. Set the First Name only
3. Set the Middle Name only
4. Gets the First Name
5. Gets the Middle Name
6. Gets the Last Name
7. Check whether a given last name is the same as the last name of this person.
8. Check whether a given last name is the same as the first name of this person.
9. Check whether a given first name is the same as the middle name of this person.
10. A method called equals that returns true if two objects contains the same first, middle, and last name
11. A method called makeCopy that copies the instance variables of a Person object into another Person object.
12. A method called getCopy that creates and returns the address of the object, which is a copy of another person object.
13. A method for a copy constructor.
14. A toString method to print out the name in the form (First Middle Last)
15. Write the definitions of the methods of the class Person to implement the operations for this class.
16. Write a test program to test the above.
This is what I have but I think I'm missing some of the above...also, my if...else statements aren't running the way I want.. '
public class Person {
private String firstName;
private String lastName;
private String middleName;
public Person (String first, String middle, String last) {
firstName = first;
lastName = last;
middleName = middle;
public Person() {
firstName = "";
lastName = "";
middleName = "";
public String toString() {
return (firstName + " " + middleName + " " + lastName);
public void setFirstName(String first) {
firstName = first;
public void setMiddleName(String middle) {
middleName = middle;
public void setLastName(String last) {
lastName = last;
public String getFirstName() {
return firstName;
public String getMiddleName() {
return middleName;
public String getLastName() {
return lastName;
public boolean equals(Person otherPerson) {
return (lastName.equals(otherPerson.lastName) && firstName.equals(otherPerson.firstName));
public void makeCopy(Person otherPerson) {      
lastName = otherPerson.lastName;
middleName = otherPerson.middleName;
firstName = otherPerson.firstName;
public Person getCopy() {
Person temp = new Person();
temp.firstName = firstName;
temp.lastName = lastName;
temp.middleName = middleName;
return temp;
public Person(Person otherPerson) {
firstName = otherPerson.firstName;
middleName = otherPerson.middleName;
lastName = otherPerson.lastName;
public void printName() {
System.out.println(firstName + "," + middleName + "," + lastName);
} and the test program follows
import java.util.Scanner;
public class TestProgPerson {
   static Scanner console = new Scanner(System.in);
   public static void main(String[] args) {
      Person myName = new Person("Bill", "Andrew", "Johnson");
      Person yourName = new Person();
      String firstName;
      String middleName;
      String lastName;
      System.out.print("My Name: ");
      myName.printName();
      System.out.println();
      System.out.print("Your Name: ");
      yourName.printName();
      System.out.println();
      System.out.print("Enter your first, middle, and last name: ");
      firstName = console.next();
      middleName = console.next();
      lastName = console.next();
      System.out.println();
      yourName.setName(firstName, middleName, lastName);
      if (myName.equals(yourName))
      System.out.println("Both people are the same.");
      else
      System.out.println("The two people are not the same.");
      myName.setFirstName(firstName);
      myName.setMiddleName(middleName);
      myName.setLastName(lastName);
      System.out.print("My new name: ");
      myName.printName();
      System.out.println();
      yourName.makeCopy(myName);
      System.out.print("After copying myName into yourName, yourName: ");
      yourName.printName();
      System.out.println();
}

Answer 1

public class Person {
     private String firstName;
     private String lastName;
     private String middleName;
     public Person (String first, String middle, String last) {
          firstName = first;
          middleName = middle;
          lastName = last;
     public Person() {
          firstName = "";
          lastName = "";
          middleName = "";
     public String toString() {
          return (firstName + " " + middleName + " " + lastName);
     public void setName(String first, String middle, String last) {
          firstName = first;
          middleName = middle;
          lastName = last;
     public void setFirstName(String first) {
          firstName = first;
     public void setMiddleName(String middle) {
          middleName = middle;
     public void setLastName(String last) {
          lastName = last;
     public String getFirstName() {
          return firstName;
     public String getMiddleName() {
          return middleName;
     public String getLastName() {
          return lastName;
     public boolean equals(Person otherPerson) {
          return (firstName == otherPerson.firstName && middleName == otherPerson.middleName &&
                         lastName == otherPerson.lastName);
     public void makeCopy(Person otherPerson) {
          firstName = otherPerson.firstName;
          middleName = otherPerson.middleName;
          lastName = otherPerson.lastName;
     public Person getCopy() {
          Person temp = new Person();
          temp.firstName = firstName;
          temp.lastName = lastName;
          temp.middleName = middleName;
          return temp;
     public Person(Person otherPerson) {
          firstName = otherPerson.firstName;
          middleName = otherPerson.middleName;
          lastName = otherPerson.lastName;
     public void printName() {
          System.out.println(firstName + " " + middleName + " " + lastName);
//Test Program for the above.
import java.util.Scanner;
public class TestProgPerson {
     static Scanner console = new Scanner(System.in);
     public static void main(String[] args) {
          Person myName = new Person("William", "Andrew", "Johnson");
          Person yourName = new Person();
          String firstName;
          String middleName;
          String lastName;
          System.out.print("My Name: ");
          myName.printName();
          System.out.println();
          System.out.print("Your Name: ");
          yourName.printName();
          System.out.println();
          System.out.print("Enter your first, middle, and last name: ");
          firstName = console.next();
          middleName = console.next();
          lastName = console.next();
          System.out.println();
          yourName.setName(firstName, middleName, lastName);
          if (myName.equals(yourName))
          System.out.println("Both people are the same.");
          else
          System.out.println("The two people are not the same.");
          myName.setFirstName(firstName);
          myName.setMiddleName(middleName);
          myName.setLastName(lastName);
          System.out.print("My new name: ");
          myName.printName();
          System.out.println();
          yourName.makeCopy(myName);
          System.out.print("After copying myName into yourName, yourName: ");
          yourName.printName();
          System.out.println();
}