Question

Create a java program for Student profile with the following requirements.

1. Each Student has: two variables id, and name.
2. A Student can be initialization with two constructers:

• Constructer without parameters, that set the id to zero and the name to an empty string.
• Constructer with tow parameters to initialize the variables id and name by a specific value.

3. Add a set method for each variable that change them to a specific value.
4. Add a get method for each variable which return its value.

To test the program, create a class StudentTest with the main method.

In the main method:

1. Create two empty Student profiles S1and S2.
2. Print the S1and S2 information.
3. Create a new student profile S3, specify the student id and name.
4. Change S3id and name.
5. Print the id and name of S3.

Answer:

Answer 1

import java.util.*;
class Student
{
int id;
String name;
Student() //Default Constructor
{
id=0;
name=null;
}
Student(int newId,String newName) //Parameterized Constructor
{
this.name=newName;
this.id=newId;
}
public void set(int i,String n) //Set Method
{
this.id=i;
this.name = n;
}
public int getid() //Get method for returning ID
{
return id;
}
public String getname() //Get method for returning Name
{
return name;
}
}
public class StudentTest //Test Class
{
   public static void main(String[] args) {
       Student S1 =new Student();
       Student S2 =new Student();
       System.out.println(S1.getid());
       System.out.println(S1.getname());
       System.out.println(S2.getid());
       System.out.println(S2.getname());
       Student S3 =new Student(3,"Student_Three");
   S3.set(4,"Student_Change");
   System.out.println(S3.getid());
       System.out.println(S3.getname());
   }
}