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Thread: (beginner) Switch Statement

  1. #1
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    Default (beginner) Switch Statement

    Hello, I would like to ask a question regarding a switch case of mine. I am new to Java(have dabbled in c++ a little though.)

    In one of my classes I have a method designed to take a character as a parameter and return a string based on the appropriate case.

    The problem is the string that is always being returned is the default "INVALID", could someone point me in the appropriate direction? I checked the java tutorial but it didn't offer me much help, is there a problem with comparing integer literals / character literals on the same switch test condition?

    private String GetNumber(char number)
    	{
    		String numberString = null;
    		if(Character.isLetter(number))
    		{
    			Character.toUpperCase(number);
     
    		}
    		switch(number)
    		{
    			case 'A': numberString = "Ace";
    				break;
    			case 2: numberString = "two";
    				break;
    			case 3: numberString = "three";
    				break;
    			case 4: numberString = "four";
    				break;
    			case 5: numberString = "five";
    				break;
    			case 6: numberString = "six";
    				break;
    			case 7: numberString = "seven";
    				break;
    			case 8: numberString = "eight";
    				break;
    			case 9: numberString = "nine";
    				break;
    			case 1: numberString = "ten";
    				break;
    			case 'J': numberString = "jack";
    				break;
    			case 'Q': numberString = "Queen";
    				break;
    			case 'K': numberString = "King";
    				break;
    			default : numberString = "INVALID";
    				break;
    		}
    		return numberString;
    	}


  2. #2
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    Default Re: (beginner) Switch Statement

    One thing that jumps out is your case numbers. You have them as ints but your switch statement variable is a char. You numbers should be '2' or '3' etc...

    also you may have to take the input as a string and use the charAt() method.
    Last edited by mwr76; October 11th, 2011 at 11:31 PM.

  3. The Following User Says Thank You to mwr76 For This Useful Post:

    georgewbw (October 12th, 2011)

  4. #3
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    Default Re: (beginner) Switch Statement

    Quote Originally Posted by mwr76 View Post
    One thing that jumps out is your case numbers. You have them as ints but your switch statement variable is a char. You numbers should be '2' or '3' etc...

    also you may have to take the input as a string and use the charAt() method.
    I actually did use the charAt method to get that value.

    Also the single quotes around my cases solved the problem. Thread marked as solved and a Thanks to you (;

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