Java Program of Student Details – Constructor

Question:-

Create a class Student with the private attributes

int studentId

String studentName, studentAddress, collegeName. 

Include appropriate getter methods.

Write 2 constructors for the Student class based on the below assumptions. 

Assume most of the students are from “NIT” college. So user has to give input whether the student is from NIT or not. 

  1. If student belongs to NIT, give input as ‘yes/YES’ and  skip input for the attribute collegeName  and create student object with 3-argument constructor to initilze the values for studentId, studentName and studentAddress and  collegeName as “NIT”.
  2. If student belongs to other college, give input as ‘no/NO’ and get college name from the user and create student object with 4-argument constructor to initialize all the values. 
  3. Instead of Yes / No, if user enters different input then display ‘Wrong Input’ and get the input again.

Based on the above assumptions write the necessary constructors in the Student class.

Write a class StudentMain with the main method and test the application. 

Get all the input needed from the main method. 

Sample Input 1:

Enter Student’s Id:

12

Enter Student’s Name:

John

Enter Student’s address:

Chennai

Whether the student is from NIT(Yes/No):

NO

Enter the college name:

SVS

Sample Output 1:

Student id:12

Student name:John

Address:Chennai

College name:SVS

Sample Input 2:

Enter Student’s Id:

43

Enter Student’s Name:

Tom

Enter Student’s address:

Coimbatore

Whether the student is from NIT(Yes/No):

y

Wrong Input

Whether the student is from NIT(Yes/No):

yes

Sample Output 2:

Student id:43

Student name:Tom

Address:Coimbatore

College name:NIT

Code:-

StudentMain.java

import java.util.Scanner;
public class StudentMain
{   public static void main (String[] args) 
    {
        
       Scanner sc=new Scanner(System.in);
       System.out.println("Enter Student's Id:");
       int studentId=sc.nextInt();
       sc.nextLine();
       
       System.out.println("Enter Student's Name:");
       String studentName=sc.nextLine();
       
       System.out.println("Enter Student's address:");
       String studentAddress=sc.nextLine();
       
       while(true)
       {
            System.out.println("Whether the student is from NIT(Yes/No):");
            String answer=sc.nextLine();
       
            if(answer.equalsIgnoreCase("yes"))
            {
                Student obj = new Student(studentId, studentName, studentAddress);
                System.out.println("Student id:"+obj.getStudentId());
                System.out.println("Student name:"+obj.getStudentName());
                System.out.println("Address:"+obj.getStudentAddress());
                System.out.println("College name:"+obj.getCollegeName());
                break;
            }
           
            else if(answer.equalsIgnoreCase("no"))
            {       
                System.out.println("Enter the college name:");
                String collegename=sc.nextLine();
                
                Student obj = new Student(studentId, studentName, studentAddress, collegename);
                
                System.out.println("Student id:"+obj.getStudentId());
                System.out.println("Student name:"+obj.getStudentName());
                System.out.println("Address:"+obj.getStudentAddress());
                System.out.println("College name:"+obj.getCollegeName());
                break;
            }
            
            else
            {
                System.out.println("Wrong Input");
            }
       }
    }
}

Student.java

public class Student
{
    private int studentId;
    private String studentName, studentAddress, collegeName;
    
    public Student(int studentId, String studentName, String studentAddress)
    {
        this.studentAddress=studentAddress;
        this.studentName=studentName;
        this.studentId=studentId;
        this.collegeName="NIT";
    }
    
    public Student(int studentId, String studentName, String studentAddress, String collegeName)
    {
        this(studentId, studentName, studentAddress);//invoking a constructor
        this.collegeName=collegeName;
    }
    
    public int getStudentId()
    {
        return this.studentId;
    }
    
    public String getStudentName()
    {
        return this.studentName;
    }
    
    public String getStudentAddress()
    {
        return this.studentAddress;
    }
    
    public String getCollegeName()
    {
        return this.collegeName;
    }
}

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