T is a type parameter that will be replaced by a real type when an object of type Gen is created.
using System;
class Gen {
T ob;
public Gen(T o) {
ob = o;
}
public T getob() {
return ob;
}
public void showType() {
Console.WriteLine("Type of T is " + typeof(T));
}
}
class MainClass {
public static void Main() {
Gen iOb = new Gen(102);
iOb.showType();
int v = iOb.getob();
Console.WriteLine("value: " + v);
Console.WriteLine();
Gen strOb = new Gen("Generics add power.");
strOb.showType();
string str = strOb.getob();
Console.WriteLine("value: " + str);
}
}