Representing integer value to char

[Abhi Dhanda]

I want to input an integer value and want the program to spell out that value as output.
For this I wrote this piece of code -

 public class Say
{
    public static void main( String[] args )
    {
        int m = Integer.parseInt( args[0] );
        Character ch1 = new Character( '0' );
        ch1.forDigit( m , 10 ) ;
 
        System.out.println( ch1.forDigit( m , 10 ) );
    }
}

Can somone help me out here that why it's not goving me an output ??

[Joyce Lee]

Hi Abhi,

Are you trying to write a program like Cattle Drive assignment Java-4a?

Joyce

[Mike Gershman]

Your program has some unnecessary lines, but it still works with the input arguments 0, 1, 2, 3, 4, 5, 6, 7, 8, or 9. Any other arguments give the null character ('\u0000'), which doesn't print anything.

If you're not sure about the input argument, why not print out args[0] before you parse it?

Also, see if you can fnd the unnecessary lines in your code.

[Abhi Dhanda]

Thanks for the replies.

yeah Joyce, am trying to do the cattle drive assignments. And this one is 4(a).

And I want to do like.. If I 'll input the digital value 22, then my program will display it as character "twenty-two".

So Mike, i tried with 0,1,2....8,9. But It returns me only the same integer representation on my output screen. And also why it returns null for any value bigger than 9.

Thanks.

[Abhi Dhanda]

The code for this is :

 
public class Say
{
    public static void main( String[] args )
    {
        int m = Integer.parseInt( args[0] );
        System.out.println( Character.forDigit( m , 10 ) );
    }
}

[Mike Gershman]

If you look up the forDigit() method in the doc, you'll see that it is doing its job returning the character representation of the integer m in the 10 based number system.

[Abhi Dhanda]

Originally posted by Mike Gershman:
If you look up the forDigit() method in the doc, you'll see that it is doing its job returning the character representation of the integer m in the 10 based number system.

Can you help me to get the thing what I want?
Can you please suggest me the method.

Thanks.

[Joyce Lee]

Abhi, here is an example for 0-9 input. You can try out 0-99.

  
public class SayTest {
  
    private static String[] numNames = {
        "zero", "one", "two", "three", "four", "five", "six", "seven",
        "eight", "nine"    
    };
   
    public static void main( String[] args ) {
        // check if the input is between 0 and 9.        
        if ((args.length == 1) && args[0].matches("\\d")) {
            int num = Integer.parseInt(args[0]);
            System.out.println(numNames[num]);
        } else { 
            System.out.println("usage: SayTest SomeNumber[0 - 9]");
        }            
    }
}

Just like the hint given in the assignment 4a, you need an array or other collection to hold the names.

Have fun!

Joyce
[ October 04, 2004: Message edited by: Joyce Lee ]

[Joyce Lee]

If you encounter any problem while working on the Cattle Drive assignments, you can come to Cattle Drive Forum to ask for help or search for clue.

Joyce

[Abhi Dhanda]

Thanks Joyce and thanks everyone for such a help.

I'll try to get it done by myself now.