what is generics in java1.5 with an example?

Generics in Java is one of important feature added in Java 5 along with Enum, autoboxing and varargs , to provide compile time type-safety

Generics notations and naming conventions

Generic Term	Meaning
Set<E>	Generic Type , E is called formal parameter
Set<Integer>	Parametrized type , Integer is actual parameter here
<T extends Comparable>	Bounded type parameter
<T super Comparable>	Bounded type parameter
Set<?>	Unbounded wildcard
<? extends T>	Bounded wildcard type
<? Super T>	Bounded wildcards
Set	Raw type
<T extends Comparable<T>>	Recursive type bound

T – used to denote type

E – used to denote element

K – keys

V - values

N – for numbers

Exampl

 public class GenericVsArray

 {
      public static void main(String args[])

   {

      Holder<Integer> numbers = new Holder<Integer>(10);

      numbers.add(101);

      System.out.println("Get: " + numbers.get(0));

    }

  }