generic types in java

// A Simple Java program to show working of user defined 
// Generic functions 
   
class Test 
{ 
    // A Generic method example 
    static <T> void genericDisplay (T element) 
    { 
        System.out.println(element.getClass().getName() + 
                           " = " + element); 
    } 
   
    // Driver method 
    public static void main(String[] args) 
    { 
         // Calling generic method with Integer argument 
        genericDisplay(11); 
   
        // Calling generic method with String argument 
        genericDisplay("GeeksForGeeks"); 
   
        // Calling generic method with double argument 
        genericDisplay(1.0); 
    } 
}

// A Simple Java program to show working of user defined 
// Generic classes 
   
// We use < > to specify Parameter type 
class Test<T> 
{ 
    // An object of type T is declared 
    T obj; 
    Test(T obj) {  this.obj = obj;  }  // constructor 
    public T getObject()  { return this.obj; } 
} 
   
// Driver class to test above 
class Main 
{ 
    public static void main (String[] args) 
    { 
        // instance of Integer type 
        Test <Integer> iObj = new Test<Integer>(15); 
        System.out.println(iObj.getObject()); 
   
        // instance of String type 
        Test <String> sObj = 
                          new Test<String>("GeeksForGeeks"); 
        System.out.println(sObj.getObject()); 
    } 
}