Input from Console in Java...

//Ist method
import java.io.BufferedReader;
import java.io.InputStreamReader;
class input
{
 public static void main(String args[])
 {
    try
    {
        BufferedReader br =
          new BufferedReader(new InputStreamReader(System.in));
        String s = br.readLine();
        double number = Double.parseDouble(s);
        System.out.println("Number is:" + number);
    } catch (Exception e) { System.err.println("Error:" + e.getMessage());}
 }
}

//IInd Method
class input
{
 public static void main(String[] args)
 {
        Scanner sc = new Scanner(System.in);
        while(sc.hasNextLine())
        {
            String line = sc.nextLine();
            double number = Double.parseDouble(line);
            System.out.println("Number is: " + number);
        }
 }
}