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package student;

import java.util.Scanner;  //necessary because we are using Scanner to get input from the user.

/**
 *
 * @author tony
 */
public class Student {

    private String studentName;    //  Field/Instance Variables
    private String modeOfStudy;
    private int academicYear;
    private double gradeAverage;

    public Student() {     //Constructor which takes no arguments. Why? To provide default values in case the user doesn't enter anything.
        studentName = "Unknown";
        modeOfStudy = "xxx";
        academicYear = 1;
        gradeAverage = 2.0;

    }

    public String toString()  //method that allows us to output the fields of the Student objects.
        {
            return studentName+" "+modeOfStudy+" "+academicYear+" "+gradeAverage;
        }

    public Student(String name, String mode, int year, double grade) {  //Constructor which does take arguments, then assigning them to the field variables.
        studentName = name;
        modeOfStudy = mode;
        academicYear = year;
        gradeAverage = grade;
    }

    public String studentName() {  //used to get user input from console. This could have been performed in the main method,
        //I elected to do it here, for readability.

        System.out.println("Please enter your name:");
        Scanner user_input = new Scanner(System.in);
        String studentName;
        studentName = user_input.nextLine();
        return studentName;

    }

    public void nameValidation(String a) {  //
        if (a.isEmpty()) {
            System.out.println("Empty string detected. Enter a value.");
        } else {
            System.out.println("Thank you for your entry.");
        }


    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        Student student = new Student();    //Default constructor for Java, and creating all objects of class (instantiating them) requires the new keyword.
        Student student1 = new Student("Jason Voorhees", "full-time", 2, 3.0);
        String a = student.studentName();   //Here, we are making a method call TO the studentName method stored in the Student class.
        student.nameValidation(a); //Here, the nameValidation method in the Student class is making the call.


        //The code below is simply used to output and visually inspect that the constructor(s) have indeed worked correctly.


        System.out.println( student );
System.out.println( student1 );

    }

}