Generic Programming example -1

//Here T is name of type parameter
// this name is used as a placeholder for the actual type
//that will be passed to Gen when an object is created

class GenericDemo<T>
{
    T obj;


    // Pass the constructor a reference to an Object of type T
    public GenericDemo(T obj) {
        this.obj = obj;

    }
    // return Object
    public T getObj() {
        return obj;
    }
    void showType()
    {
        System.out.println("Type of T is :" + obj.getClass().getName());
    }
   
}


public class GenericTypeTesting {

    public static void main(String[] args) {

        GenericDemo<Integer> intojb = new GenericDemo<Integer>(210);

        System.out.println(intojb.getObj());
        intojb.showType();
        GenericDemo<String> strobj = new GenericDemo<String>("ISTAR");
        System.out.println(strobj.getObj());
        strobj.showType();

    }

}