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This simple example shows how to use Generics in Java.

Create a java class Employees:

public class Employees
{
	private String name;
	private int age;
	
	public Employees(String n,int a)
	{
	name = n;
	age = a;
	}
	
	public String ToString()
	{
		return name + ", " + age;
	}
}

Create a java class Products:

public class Products 
{
	private String name;
	private double price;
	
	public Products(String n,double p)
	{
	name = n;
	price = p;
	}
	
	public String ToString()
	{
		return name + " Euro " + price + "";
	}
}

Create a java class GenericsTest:

import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;

public class GenericsTest
{
	public static void main (String [] args)
	{
		List<Employees> employeesList = new LinkedList<Employees>();
		employeesList.add(new Employees("Zaira", 41));
		employeesList.add(new Employees("Desy", 34));
		employeesList.add(new Employees("Orny", 28));
		employeesList.add(new Employees("Barbara", 31));
		employeesList.add(new Employees("Elisa", 36));
			
		List<Products> productsList = new LinkedList<Products>();
		productsList.add(new Products("Server", 1300.99));
		productsList.add(new Products("Desktop", 680.48));
		productsList.add(new Products("Notebook", 560.34));
		productsList.add(new Products("Netbook", 290.85));
		
		System.out.println("List of employees:");
		   Iterator<Employees>  itrEmployees = employeesList.iterator();    
		while(itrEmployees.hasNext()) {
			Employees e =itrEmployees.next();
			System.out.println(e.ToString());
		} 
		
		System.out.println("---------------------------------------------");
		System.out.println("List of products:");		
		Iterator<Products>  itrProducts = productsList.iterator(); 
		while(itrProducts.hasNext()) {
			Products p =itrProducts.next();
			System.out.println(p.ToString());
		} 
	}
}

This is the output of the program:

List of employees:
Zaira, 41
Desy, 34
Orny, 28
Barbara, 31
Elisa, 36
---------------------------------------------
List of products:
Server Euro 1300.99
Desktop Euro 680.48
Notebook Euro 560.34
Netbook Euro 290.85