Reading Data from Keyboard in Java

plz give me any basic example..

See the below example to clear your doubt by using program.
import java.io.DataInputStream;

public class Reading {

       public static void main(String[] args) {

              DataInputStream in= newDataInputStream(System.in);

              intintNumber = 0;

              floatfloatNumber = 0.0f;

              try{

                     System.out.println("Enter an Integer: ");

                     intNumber = Integer.parseInt (in.readLine());

                     System.out.println("Enter a float number: ");

                     floatNumber = Float.valueOf(in.readLine()) .floatValue();
              }

              catch (Exception e){

                     System.out.println("intNumber = " + intNumber);

                     System.out.println("floatNumber = " + floatNumber);
              }
       }
}