method over ridding

public class Student
{
	private String name;
	private String rollno;
	private int age;
	
	//Constructor
	public Student(String name,String rollno,int age)
	{
		this.name=name;
		this.rollno=rollno;
		this.age=age;
	}
	
	//Method
	public void display()
	{
		System.out.println("Name: "+this.name);
		System.out.println("Roll No: "+this.rollno);
		System.out.println("Age: "+this.age);
		
	}	
}
////////////////////////////////////////////////////////////////
public class StudentTest
{
	public static void main(String[] args)
	{
		Student s1= new Student("John","A100",22);
		Student s2= new Student("Abhi","5S0",18);
		
		s1.display();
		s2.display();
	}
}