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    Scanner Or java.util.Scanner :

         Scanner is one of the predefined class present in java .util.* package. The basic aim of 

    Scanner class is to read the data from keyboard dynamically.

     Profile Of Scanner :

 1)      Scanner(InputStream) :

           This Scanner constructor in which Inputstream is one of the predefined class whose object called in created as static data member in System class.

  System.in is always gives control to keyboard.

Ex :   Scanner s=new Scanner(System.in);

Instance Methods :

2)      Public Xxx nextXxx() :

       This method is used for reading fundamental values from keyboard. And Xxx represents any fundamental data type.

For Example :

Public int nextInt()

Public float nextFloat()………etc……

3)      Public String nextLine() :

        This method is used for reading any type of value from keyboard in the form of String type

The Following Program the concept of Scanner Class :

    import java.util.*;

   class dataread

{

    Public static void main(String args[])

  {

     Scanner s=new Scanner(System.in);

     System.out.println(“Enter the first number”);

     String s1=s.nextLine();

      System.out.println(“Enter the Second number”);

      String s2=s.nextLine();

      int result=Integer.parseInt(s1)+Integer.parseInt(s2);

     System.out.println(“Total result is” +result);

   }

}

      Data Extraction Interfaces are as follows :

•        Iterator (I)
•        ListIterator(I)
•        Enumeration (I).

      1- D and 2-D Collection Frame work classes are 

•         LinkedList 
•         ArrayList
•         HashSet
•         TreeSet
•         HashMap
•         TreeMap
•         Vector 
•         Stack  
•         Dictionary 
•         HashTable
•         Properties
•