import java.io.IOException;
import java.io.InputStream;
import java.util.InputMismatchException;
import java.util.Scanner;

/**
* A simple example of constructors, reading from the keyboard and toString
* Created: Jan 15, 2020 Modified: Jan 22, 2020
* 
* @author gtowell
*/
public class Student {
    /* The name of the student */
    String name;
    /* The Age of the student */
    int age;
    
    /**
    * Ensures that the instances variables are
    * initialized
    */
    public Student() {
        name = "";
        age = 0;
    }
    
    /**
    * Construct a Student instance with both name and age
    * 
    * @param n the name
    * @param a the age
    */
    public Student(String n, int a) {
        name = n;
        age = a;
    }
    
    /**
    * Construct a Student instance by getting input from the given stream
    * 
    * @param inStream -- the stream from which to get student information. This is
    *                 expected to be System.in
    * @throws IOException
    * @throws NumberFormatException
    */
    public Student(InputStream inStream) throws IOException, InputMismatchException {
        this(); // call the default constructor to be sure that the variables are initialized
        Scanner scanner = new Scanner(inStream);
        System.out.print("Enter student name: ");
        name = scanner.nextLine();
        System.out.print("Enter Age: ");
        age = scanner.nextInt();
    }
    
    /**
    * The standard toString method. But it has a typo (extra g) so it won't get
    * called automatically
    * 
    * @return A string representation of a student
    */
    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder("Details..............");
        sb.append("\n    Name: ").append(this.name).append("\n    Age:  ").append(age);
        return sb.toString();
    }
    
    
    
    /**
    * One version of getting input from the user.
    * 
    * @param args ignored
    */
    public static void main(String[] args) {
        try {
            Student student = new Student(System.in);
            System.out.println("\n" + student);
        } catch (IOException ioe) {
            System.err.println("problem " + ioe);
        } catch (InputMismatchException ime) {
            System.err.println("problem224 " + ime.toString());
        }
    }
    
    public static void main2(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String name;
        int age;
        System.out.print("Enter student name: ");
        name = scanner.nextLine();
        try {
            System.out.print("Enter Age: ");
            age = scanner.nextInt();
        } catch (InputMismatchException e) {
            System.err.println("problem " + e);
            return;
        }
        Student student = new Student(name, age);
        System.out.println("\n" + student.toString());
    }
    
    
    
}