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Saddly Stuck Stupid Strings

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Saddly Stuck Stupid Strings

 
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  #1
Mar 7th, 2008
I'm trying to create a program where it takes the first character of the Last name and place the person in a group due to the name.
I tried comparing the words to numbers i.e. a=1, s=19, etc.
any help at all would be appreciated
Java Syntax (Toggle Plain Text) 
  1. package GroupAssignment;
  2. import System.*;
  3. /**
  4.  * Bushra Osman
  5.  */
  6. public class Program
  7. {
  8. 	public static void main(String[] args)
  9. 	{
  10. 		int group;
  11. 		String fn, ln;
  12. 		Console.Write("Enter your first name: ");
  13. 		fn = Console.ReadLine();
  14. 		Console.Write("Enter your last name: ");
  15. 		ln = Console.ReadLine();
  16. 		Console.Write(fn+" "+ln);
  17. 		Console.Write(" is part of group ");
  18. 		if ((ln > 0) && (ln <= 9))
  19. 		{
  20. 			group = 1;
  21. 			Console.Write(group);
  22. 		}
  23. 		else if ((ln >= 10) && (ln <= 19))
  24. 		{
  25. 			group = 2;
  26. 			Console.Write(group);
  27. 		}
  28. 		else if ((ln >= 20) && (ln <= 26))
  29. 		{
  30. 			group = 3;
  31. 			Console.Write(group);
  32. 		}
  33.  
  34. 		Console.ReadLine();
  35. 	}
  36. }
Last edited by ~s.o.s~; Mar 9th, 2008 at 5:13 am. Reason: Added code tags, learn to use them.
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Re: Saddly Stuck Stupid Strings

 
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  #2
Mar 7th, 2008
You cannot compare string with number, the way you are doing it. however you can compare strings with equals() or equalsIgnoreCase() methods of String.

What is it that you try to compare, e.g. 0 to 9 , 10 to 19 and etc...? you are trying to compare a last name say, Smith with 20.?
Last edited by new_2_java; Mar 7th, 2008 at 3:18 pm.
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Re: Saddly Stuck Stupid Strings

 
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  #3
Mar 8th, 2008
You want to compare characters, not strings
Java Syntax (Toggle Plain Text) 
  1. char c =  ln.toUpperCase().charAt(0) // gets the first letter in the String
  2. if (c >= 'A' && c <= 'K') group = 1;
although you can compare characters to integers, its better to compare characters to other characters because it makes your code more readable

also make sure to use the toUpperCase() or toLowerCase() methods because 'A' doesn't equal 'a'
Last edited by Zork'nPalls; Mar 8th, 2008 at 12:45 am.
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Re: Saddly Stuck Stupid Strings

 
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  #4
Mar 8th, 2008
you could use:

java Syntax (Toggle Plain Text) 
  1. if( ln.charAt(0).equalsIgnoreCase( 'a' ) )
  2.  blah;
Last edited by mickinator; Mar 8th, 2008 at 9:00 pm.
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Re: Saddly Stuck Stupid Strings

 
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  #5
Mar 8th, 2008
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Originally Posted by mickinator View Post
you could use:

java Syntax (Toggle Plain Text) 
  1. if( ln.charAt(0).equalsIgnoreCase( 'a' ) )
  2.  blah;
sorry, but that first line of code doesn't even compile because you tried to call the equalsIgoreCase method on a char. You can't call any methods on chars
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Re: Saddly Stuck Stupid Strings

 
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  #6
Mar 17th, 2008
Thank you for the help.
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