Help with constructors

[monopolyman900]

I'm having some trouble getting information from a different class using a constructor,

This is the main method where I'm calling for information from another class:

public class StudentTest {


public static void main(String[] args)
{


Person[] personObjects = new Person[2];

personObjects[0] = new Student("John", "Jones", "Business", 3.4, 28);
personObjects[1] = new Student("Joseph", "Smith", "Liberal Arts", 1.3, 27);

System.out.println(personObjects[0].getFullName());
}

The Student class is a subclass of Person, the code for Person is:

public class Person {

private String firstName;
private String lastName;
private String idSSN;

//person constructor
public void Person(String fName, String lName, String SSN)
{
firstName = fName;
lastName = lName;
idSSN = SSN;
}

//set methods (3)
public void setFirstName(String fName)
{
firstName = fName;
}

public void setLastName(String lName)
{
lastName = lName;
}

public void setSSN(String SSN)
{
idSSN = SSN;
}

//get methods (3)
public String getFirstName()
{
return firstName;
}

public String getLastName()
{
return lastName;
}

public String getSSN()
{
return idSSN;
}

//get full name string
public String getFullName()
{
return String.format("%s %s", getFirstName(), getLastName());
}

For some reason when I run the main method above, I get the results, "null null". Anybody know why it isn't storing the data?
Any help is greatly appreciated.

[Fubarable]

Please edit your post and wrap the code in code tags.
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Note that your Person class has no constructor. Instead it has a "pseudo" constructor since constructors have no return type, not void, not anything.