Java Program Default and Parameterized Student Constructor - IProgramX

Q.  Define a Student class (roll number, name, percentage). Define a default and parameterized constructor. Keep a count of objects created. Create objects using parameterized constructor and display the object count after each object is created. (Use static member and method). Also display the contents of each object.

Program:

import java.io.*;
class Student {
int rollNumber;
String name;
float per;
static int count=0;
public Student(){
rollNumber=0;
name=null;
per=0.0f;
}
public Student(int rollNumber,String name,float per){
this.rollNumber=rollNumber;
this.name=name;
this.per=per;
count++;
}
public static void count(){
System.out.println("Object "+(count)+" Created");
}
public void display(){
System.out.println("Roll Number: "+rollNumber);
System.out.println("Name: "+name);
System.out.println("Percentage: "+per);
System.out.println("------------------------------");
}
}
public class StudentMain {
public static void main(String [] args)throws IOException{
Student s1=new Student(1,"Rusher",56.76f);
Student.count();
Student s2=new Student(2,"Naren",89.67f);
Student.count();
Student s3=new Student(3,"Adi",99.54f);
Student.count();
s1.display();
s2.display();
s3.display();
}

}

Output:

Object 1 Created

Object 2 Created

Object 3 Created

Roll Number: 1

Name: Rusher

Percentage: 56.76

------------------------------

Roll Number: 2

Name: Naren

Percentage: 89.67

------------------------------

Roll Number: 3

Name: Adi

Percentage: 99.54

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