creting Classes problem

[Justin Ray]

so im almost done with this assignement and i think im trying too hard or something because i just cant figure out what the program is wanting.

here it is:

class Name{
    //instance variables
    private String first;
    private String middle;
    private String last;
    
    
    //Constructors
    
    //Default
    public Name(){
        this("", "", "");
    }
    public Name(String fi, String la){
        this(fi, "", la);
    }
    public Name(String fi, String mi, String la){
        first = fi;
        middle = mi;
        last = la;
    }
    
    //accessor methods
    public String getFirst(){ return first; }
    public String getMiddle(){ return middle; }
    public String getLast(){ return last; }
    
    //mutator methods
    public void setFirst(String f){ first = f; }
    public void setMiddle(String m){ middle = m; }
    public void setLast(String l){ last = l; }
    
    //to string
    public String toString(){
        String out = String.format(first+" "+middle+" "+last);
        return out;
    }
}

class Person{
    protected Name name;
    protected String gender;
    protected String id;
    
    public Person(Name name, String gender){
    this(name, gender, "");
    }
    public Person(Name nam, String gende, String i){
        name = nam;
        gender = gende;
        id = i;
    }
    //accessors
    public Name getName(){ return name; }
    public String getGender(){ return gender; }
    public String getiD(){ return id; }
    //mutator
    public void setiD(String iDentify){ id = iDentify; }
    
    public String toString(){
        String out2 = (name+" "+gender+" "+id);
        return out2;
    }
}

class Student extends Person{
    protected double credits;
    protected double gpa;
    
    public Student(Name n, String Gender, double cred, double gp1){
        
        credits = cred;
        gpa = gp1;
    }
    public double getCred(){ return credits; }
    public double getGpa() { return gpa; }
    
    public String toString(){
    String out3 = (name+" "+gender+" "+credits+" "+gpa);
    return out3;
    }
}

//start test here
public class TestAsst8 {
   public static void main( String args[] ) {

      // partial test of Name class
      System.out.println("Test of Name class...");
      Name n1 = new Name("Smokey", "The", "Bear");
      System.out.println("The first full name is " + n1);
      System.out.println("The first name is " + n1.getFirst());
      System.out.println("The middle name is " + n1.getMiddle());
      System.out.println("The last name is " + n1.getLast());
      n1.setMiddle("T.");
      System.out.println("The middle name is now " + n1.getMiddle());
      System.out.println("The first full name is now " + n1);
      Name n2 = new Name("Bozo", "Clown");
      System.out.println("The next full name is " + n2);
      n2.setMiddle(n1.getMiddle());
      System.out.println("The modified name is " + n2);

      // partial test of Person class
      System.out.println("\nTest of Person class...");
      Name samsName = new Name("Sam", "Ash");
      Person sam = new Person(samsName, "M");
      System.out.println("sam: " + sam);
      sam.name.setMiddle("L.");
      System.out.println("sam: " + sam);
      Person pop = new Person(new Name("Popeye", "T.", "Sailor"), "M");
      System.out.println("pop: " + pop);
      pop.setiD("123-45-6789");
      System.out.println("pop: " + pop);

      // partial test of Student class
      System.out.println("\nTest of Student class...");
      Name marysName = new Name("Mary", "Doe");
      Student mary = new Student(marysName, "F", 17, 3.25);
      System.out.println("mary: " + mary);

      System.out.println("\nEnd of test");*/
   }
}

my problem is at line 70 i get the output :

"TestAsst8.java:70: cannot find symbol
symbol : constructor Person()
location: class Person
public Student(double cred, double gp1){
--------------------------------------------------^
1 error".

i have tried mutiple angles at this problem for the past 4 hours and i just cant figure it out.

i also have the assignment details here:

CIS 160 - Programming Project #8

[1. Write a class called Name. It should contain the following:]
1. three String instance variables (private) for first, middle, and last names
2. three constructors for Name
a default constructor
a constructor for when first and last names are supplied
a constructor for when all three names are supplied

3. three methods that return the instance variables
one should return the first name (call it getFirst)
one should return the middle name (call it getMiddle)
one should return the last name (call it getLast)

4. three methods that set the instance variables
one should set the first name (call it setFirst)
one should set the middle name (call it setMiddle)
one should set the last name (call it setLast)

5. a method called toString that returns the whole name as a String

[2. Write a class called Person. It will use the Name class (but is not a subclass). It should contain the following:]
1. three protected instance variables
one called name that is of type Name (the class you created in problem 1)
one called gender which will be a single character (M or F)
one called id which will be a String (usually the social security number)

2. two constructors
a constructor for when only Name and gender are supplied
a constructor for when Name, gender, and id are all suplied
3. three accessor methods that return name, gender, and id (named getName, getGender, and getId)

4. one mutator method named setId that sets the id

5. a method called toString that returns all the instance variables as a String

[3. Write a derived class called Student from the base class Person.]
1. remember that this class extends Person

2. there should be two protected instance variables
a double called credits which indicates credit hours earned
a double called gpa

3. there should be one constructor which expects Name, gender, credits, and gpa

4. there should be two accessor methods which return credits and gpa respectively

5. include a method called toString that returns all the information as a String

[4. Try out your classes with the test program. Fix any minor errors that you find in the test program.]

thank you in advance

[alfonz jan frithz]

Lets see the Person class,

 public Person(Name name, String gender){   
    this(name, gender, "");   
    }   
    public Person(Name nam, String gende, String i){   
        name = nam;   
        gender = gende;   
        id = i;   
    }      

there are two constructors there, one with two arguments, another with three arguments. You want to make some class that extends Person, which is Student. Let see its constructor.

    public Student(Name n, String Gender, double cred, double gp1){   
        credits = cred;   
        gpa = gp1;   
    }  

by default, when you make constructor, it calls super() first. super() is used to call your parent constructor. But, because you dont have Person constructor with no arguments, it says error.

try to change the constructor by adding

super(n, Gender); at the first line of your constructor..

[Justin Ray]

tyvm for your help that worked! i knew i was overthinking it and i forgot something, i allways do it.