What are Generics in Java

In common term Generic means a common type of things or relating to a class or group of things not specific.

In Java Generics are introduced in 2004 within Java 5.0 features along with Enum, autoboxing and varargs , to provide compile time type-safety.Java Generic methods and generic classes enable programmers to specify, with a single method declaration, a set of related methods or, with a single class declaration, a set of related types, respectively.
What is type-safety?
It is just a check by compiler that correct Type(datatype) is used in correct place and there should not be any ClassCastException.

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How to Iterate Generic type of ArrayList

Generics in Java

Generics were introduced in Java 1.5 to define abstract types for the variables of by enclosing a comma-separated list of their names within angle brackets after the name of the class or interface. We can user this type of variables any where in the class if a type is required in any instance fields or methods of the class.

Now in this post we are learning how to iterate the Generic type of list.

Normally we used to iterate any list we take the help of Iterator. If it is normal list as well we can iterate the Generic type.

Lets take a bean class of User with a constructor and setters and getters methods.

Here the User having the String type name and link variables.

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