JAVA only, please help me answer the code below.

Assign courseStudent's name with Smith, age with 20, and ID with 9999. Use the print member method and a separate println statement to output courseStudents's data. Sample output from the given program:

Name: Smith, Age: 20, ID: 9999

// ===== Code from file PersonData.java ===== public class PersonData { private int ageYears; private String lastName;

public void setName(String userName) { lastName = userName; }

public void setAge(int numYears) { ageYears = numYears; }

// Other parts omitted

public void printAll() { System.out.print("Name: " + lastName); System.out.print(", Age: " + ageYears); } } // ===== end =====

// ===== Code from file StudentData.java ===== public class StudentData extends PersonData { private int idNum;

public void setID(int studentId) { idNum = studentId; }

public int getID() { return idNum; } } // ===== end =====

// ===== Code from file StudentDerivationFromPerson.java ===== public class StudentDerivationFromPerson { public static void main (String [] args) { StudentData courseStudent = new StudentData();

/* Your solution goes here */

} } // ===== end =====