Java program to calculate total cost of an item using methods (OOP)

import java.util.*;
class invoice
{
public static void main (String args[])
{
Scanner in = new Scanner (System.in);
String name;
itemdata ob = new itemdata();
ob.get();
System.out.print ("\n\t Enter item name = ");
name=in.nextLine();
ob.cost();
ob.displyLine(name);

}
}


class itemdata
{
Scanner in = new Scanner (System.in);
int number;
double quantity,price,tcost=0;
void get()
{
System.out.print ("\n\t Enter item number = ");
number=in.nextInt();
}

void cost()
{
System.out.print ("\n\t Enter item quantity = ");
quantity=in.nextDouble();
System.out.print ("\n\t Enter item price per unit = ");
price=in.nextDouble();
tcost=quantity*price;
}

void displyLine(String name)
{
System.out.println ("\n\t Item number = "+number);
System.out.println ("\n\t Item nume = "+name);
System.out.println ("\n\t Item quantity = "+quantity);
System.out.println ("\n\t Item price per unit = "+price);
System.out.println ("\n\t Total cost = "+tcost);
}

}