/*
  Author  : Michael Robinson
  Program : scannerClass.java
  Purpose : To present the Scanner class to read from KB
            Scanner myScanner = new Scanner(System.in);
            Accepts                             Returns
            byte x   = myScanner.nextByte();    byte
            double x = myScanner.nextDouble();  double
            int x    = myScanner.nextInt();     int
            float x  = myScanner.nextFloat();   float
            String x = myScanner.nextLine();    String
            long x   = myScanner.nextLong();    long
            short x  = myScanner.nextShort();   short
          
   Updated : May 7, 2099
*/


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


public class scannerClass 
{
    public static void readTheKeyboard()
    {         
        //create an object to read the keyboard
        //class   object                   method
        Scanner myScanner = new Scanner( System.in );
               
        System.out.print(
        "Hi I am Scanner, please enter your name : " );
             
        //user input get assigned to name 
        String name = myScanner.nextLine(); 
           
        System.out.printf( "Hi %s, nice meeting you\n", name );
	      
        System.out.print( "\nNow we are going to do some math." );
               
        double fnum, answer;
        int snum;
                
        System.out.print( "\nEnter first number : " );
         
        //user input get assigned to fnum
        fnum = myScanner.nextDouble(); 
         
        System.out.print( "Enter second number: " );
	      
        //user input get assigned to snum	
	snum = myScanner.nextInt();  
              
        System.out.printf( "\nAdding       %.2f + %d = %.2f\n", 
                            fnum, snum, (fnum + snum) ); 
	    	
        answer = fnum * snum;
         
        System.out.println( 
        "Multiplying: " + fnum + " by " + snum + " = " + answer ); 
                     
        String input;         //to hold a string line of input
        char singleCharacter; //to hold a char from String input 
	      	
        //ask user a question
        System.out.print( 
        "\n\n\tAre we having fun? Y=Yes N=Not ? " );
                    
        //java PROBLEMS:
        //this line is needed to clear the keyboard buffer
        //READS KB BUFFER WHICH HAS CR FROM PREVIOUS 
        //myScanner.nextInt() and myScanner.nextDouble DOES NOT read 
        //the CR at end of input, but reads the CR at beginning, left     
        //from last Scanner clears CR at beginning of keyboard buffer 
        input = myScanner.nextLine(); 
        input = myScanner.nextLine(); //reads user keyboard input
	   
        //takes first char from user input and makes it uppercase
        singleCharacter = input.toUpperCase().charAt(0); 
	   
        while( singleCharacter != 'Y' && singleCharacter != 'N' )
        {  	
            System.out.println(
            "\tYou must be dreaming, just answer Yes or No." );	
            	   
            //ask user a question
            System.out.print( 
            "\n\n\tAre we having fun? Y=Yes N=Not ? " );
             	   
            //reads user keyboard input
            input = myScanner.nextLine(); 
                        
            //makes first char from user input into uppercase
            singleCharacter = input.toUpperCase().charAt(0); 
        }
	   	
        System.out.println( "\n\tYour FULL answers is          : " + 
                             name );
                              
        System.out.println("\tThe First UpperCase letter is : " + name.toUpperCase().charAt(0) ); 
	     
        if( singleCharacter == 'Y' )
        {
            System.out.println( "\tI am very happy to hear that." );
        }
        else //if( singleCharacter == 'N' )
        {
             System.out.println( "\tI am sorry to hear that." );
        }
          
    }//end public static void readTheKeyboard()
     
       
    public static void main( String arg[] )
//    public static void main( String arg[] )
    {
        readTheKeyboard();
        
        System.out.println( "\n\nEnd of program\n" );
    	
    }//end public static void main( String arg[] )
       
}//end public class scannerClass