Input of a mix of types. From http://www.cs.utexas.edu/users/ndale/Scanner.html

MixedTypeInput.java

import java.io.*;
import java.util.Scanner;

public class MixedTypeInput {
  public static void main(String[] args) {
    double number;
    Scanner in = new Scanner(System.in);

    System.out.println("Enter your gross income: ");

    if (in.hasNextInt()) {
      number = (double)in.nextInt();
      System.out.println("You entered " + number);
    }
    else if (in.hasNextFloat()) {
      number = (double)in.nextFloat();
      System.out.println("You entered " + number);
    }
    else if (in.hasNextDouble()) {
      number = in.nextDouble();
      System.out.println("You entered " + number);
    } 
    else 
      System.out.println("Token not an integer or a real value.");   
  }
}