Re: How to return a String in a boolean method

From:

Mark Space <markspace@sbcglobal.net>

Newsgroups:

comp.lang.java.programmer

Date:

Mon, 07 Aug 2006 23:42:44 GMT

Message-ID:

<UdQBg.6092$FN2.4466@newssvr14.news.prodigy.com>

Kermit Piper wrote:

Hello,
I am trying to output a String that I can pass to another method I
already have set-up that will take this value as an input parameter.
But, I keep getting Type mismatch: cannot convert String ot boolean. I
know it's probably simple but I can't see it. If someone could help I'd
sure appreciate it. Here is the method and a comment by the line where
I'm trying to return a String value:

    public static boolean checkUPCFormat4(String temp)
    {
        if (temp.length() >3 && temp.length()<= 4)
        {
            if (temp.equalsIgnoreCase("0000"))
            {
                System.out.println("You have entered an invalid 4-digit UPC Code.
Verify and enter ALL numbers.");
                                         // String exceptionString
// = new String("UPC should be all Numeric");

throw new IllegalArgumentException(
"UPC should be all numeric.");

                 //return exceptionString; //Type mismatch
                //return false;
            }
            return true;
    }
        return false;
    }
Thanks,
KP

IllegalArgumentException is a type of RuntimeException, which does not
have to be declared in your method prototype.

You can use toString() on the exception after it is thrown to capture
the message string along with all the other exception information, or
use getMessage() to just get the string alone.