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Java Forum / First Aid / March 2004square root symbol on button
I need to place the square root symbol on a button. The code for the symbol is 251, but I'm not sure how to place that on the button. Any help will be appreciated. Dave > I need to place the square root symbol on a button. The code for the > symbol is 251, but I'm not sure how to place that on the button. Any > help will be appreciated. No, it's not -- at least in Unicode. In Unicode, 251 decimal is a u with accent-circumflex, and 251 hex is a latin lower-case 'alpha' character. There is a square root symbol at hex 221A (or decimal 8730). Perhaps byte value 251 maps to a square root symbol in some encoding somewhere, but I'm not familiar with such an encoding. In any case, once you've actually got the right value (and www.unicode.org/charts helps there), you can use \u221A to include it in a text string. The next challenge is to be sure you are using a font capable of displaying that symbol.  Signaturewww.designacourse.com The Easiest Way to Train Anyone... Anywhere. Chris Smith - Lead Software Developer/Technical Trainer MindIQ Corporation > I need to place the square root symbol on a button. The code for the > symbol is 251, but I'm not sure how to place that on the button. Any > help will be appreciated. > > Dave If you are using a (javax.swing) JButton rather than (java.awt) Button, then you could display a graphical image on the button. I tried using the 2nd power character once and found that it didn't display correctly on all platforms. Using the image would avoid that problem, and (if you create the image file) give you more control over how it looks. Thank you both, Chris and Tom. I looked at both of your options and have decided that putting an image on the button looks best. By the way Chris, 251 is the ascii extended decimal code. The unicode you suggested works better. Thanks for the heads up. Dave > I need to place the square root symbol on a button. The code for the > symbol is 251, but I'm not sure how to place that on the button. Any > help will be appreciated. > > Dave > By the way Chris, 251 is the ascii extended decimal code. The unicode > you suggested works better. Thanks for the heads up. No, it's not. There's no such thing as "ascii extended". ASCII is a 7-bit encoding with values from 0 through 127. Anything else (especially anything 8-bit) is some other encoding. Saying "ascii extended" is a little bit like saying "Non-C++ computer language". It's just about as potentially vague. It might be ISO-8859-1, codepage 1252, codepage 850, codepage 437, etc. To let you know, Windows usually uses Cp1252, but most DOS and Microsoft command prompts use Cp850 on the same computer (which is one reason why System.out.println() can have problems). Back in Windows 3.1 days Microsoft used to use Cp437. Being precise with terminology helps in cases like this. Well Jon, do a web search for "ascii extended" turns up 942 pages so it seems I'm not the only one who has used the term. As for the rest of it I could care less. Maybe you could of gotten a clue what I was asking if you could remove you head from your anus. Was that precise enough for you to understand. >> By the way Chris, 251 is the ascii extended decimal code. The unicode >> you suggested works better. Thanks for the heads up. [quoted text clipped - 18 lines] > > Being precise with terminology helps in cases like this. > Well Jon, do a web search for "ascii extended" turns up 942 pages so it > seems I'm not the only one who has used the term. Well David, if you google http://www.google.com/search?&q=idiot+author+web+page You get 226,000 hits.. Now, what does _that_ mean? SignatureAndrew Thompson * http://www.PhySci.org/ Open-source software suite * http://www.PhySci.org/codes/ Web & IT Help * http://www.1point1C.org/ Science & Technology [ ..and please feel free to go trawling through my many web-pages looking for spelling and other mistakes, they probably need some edit checking. ;-) ] > Well Jon, do a web search for "ascii extended" turns up 942 pages so it > seems I'm not the only one who has used the term. > > As for the rest of it I could care less. Maybe you could of gotten a > clue what I was asking if you could remove you head from your anus. Was > that precise enough for you to understand. 1) Don't top post. 2) There is no such "standard" as ASCII Extended 3) ASCII above 127 displays differently on different platforms 4) Webpage authors don't always know what they are talking about 5) Don't be a prick 6) Go back to Visual Basic Matt SignatureNot so interesting... http://www.mpcontracting.co.uk >2) There is no such "standard" as ASCII Extended The problem is there are hundreds of ways of extending ASCII to 8 bits. One nice thing about Unicode 16 is there is so far only one set of glyphs. -- Canadian Mind Products, Roedy Green. Coaching, problem solving, economical contract programming. See http://mindprod.com/jgloss/jgloss.html for The Java Glossary. > Well Jon, do a web search for "ascii extended" turns up 942 pages so it > seems I'm not the only one who has used the term. No. That I'm well aware of. It's also happend more than once that new computer users have complained about the "cup holder" when they actually should have said "CD-ROM tray". (Try a google search of that. You get 28,500 pages, so it must be even more valid). > As for the rest of it I could care less. Maybe you could of gotten a > clue what I was asking if you could remove you head from your anus. Was > that precise enough for you to understand. Yes. Very. I pointed out that you were making a mistake and not knowing to look for something in order to get the answers you needed. You seem to have decided that you don't need to bother. I've pointed out something that you need to know, especially with Java and it's String<-->byte<-->string conversions. If you choose to ignore it, that's entirely your prerogative. This issue is much like the users coming in asking about which "java compiler" to use. In the vast majority of cases they don't really care as much about "compiler", but instead really need to be directed to look for "Java IDE". Telling them so usually allows them to get better hits on their searches and helps them get solutions faster. > Thank you both, Chris and Tom. I looked at both of your options and have > decided that putting an image on the button looks best. > > By the way Chris, 251 is the ascii extended decimal code. The unicode > you suggested works better. Thanks for the heads up. Glad you solved your problem. If you plan on sticking with Java, or writing cross-platform code in any other language for that matter, you really need to pay attention to what Jon said. The term "extended ASCII" has no real definition, but is often used to describe one of any number of 8-bit character encodings that share the first 128 values with ASCII. When I saw your question, I checked ISO 8859-1 and Windows CP1252 (two encodings that are different, but are *both* frequently referred to as "extended ASCII") and found that 251 is not a square-root sign in either of them. I still don't know which "extended ASCII" character encoding you were assuming when you asked that question. (Perhaps the old DOS one? I am forgetting its technical name, so I didn't check it to find if there's a square-root symbol at decimal 251 there.) Signaturewww.designacourse.com The Easiest Way to Train Anyone... Anywhere. Chris Smith - Lead Software Developer/Technical Trainer MindIQ Corporation Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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