 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
Java Forum / General / June 2005String contains a square symbol ???
Ive sent some data via asocket to another app and when it returns the data it contains two [][] squares at the start. how can I get rid of these squares i thought they might be \r or \n's but there not > Ive sent some data via asocket to another app and when it returns the > data it contains two [][] squares at the start. No, it doesn't. The data just contains numbers in the form of bits and bytes. It is a matter of interpretation how these numbers are visually represented. Most likely you try to print the data as-is, and the current font has no glyph for the corresponding codes. In such a case Java happens to print squares. But there are no squares in the data - it is just that Java decides to represent the particular numbers as squares for lack of a better representation. > how can I get rid of > these squares i thought they might be \r or \n's but there not Maybe they are. Get a debugger and look at them. Or use a print statement to print out the codes (not the glyphs, but the numbers). Or use a network sniffer like ethereal to verify that you indeed have the data one the wire which you think you have. /Thomas  SignatureThe comp.lang.java.gui FAQ: ftp://ftp.cs.uu.nl/pub/NEWS.ANSWERS/computer-lang/java/gui/faq > > Ive sent some data via asocket to another app and when it returns the > > data it contains two [][] squares at the start. [quoted text clipped - 6 lines] > is just that Java decides to represent the particular numbers as squares > for lack of a better representation. Could this be a BOM? - I'd have thought, however, that any Jave Unicode streaming stuff that he might be using would have known how to deal with that. -- Tim Ward Brett Ward Limited - www.brettward.co.uk > Could this be a BOM? That's for sure possible, yes, but how could we know? All we know is that the OP reads from a socket, but we don't know how it is read. We also don't know how the data was written (text or binary) at the other end. We both suggested to sniff the traffic, and that is IMHO the most sensible way to start. > - I'd have thought, however, that any Jave Unicode > streaming stuff that he might be using would have known how to deal with > that. That is definitely not the case. See http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4508058 Someone has even copied workaround code from an old discussion in this group into the bug report. Still after four years Sun hasn't fixed this. /Thomas SignatureThe comp.lang.java.gui FAQ: ftp://ftp.cs.uu.nl/pub/NEWS.ANSWERS/computer-lang/java/gui/faq >> > Ive sent some data via asocket to another app and when it returns the >> > data it contains two [][] squares at the start. [quoted text clipped - 10 lines] > streaming stuff that he might be using would have known how to deal with > that. Maybe not. Microsoft sometimes uses a BOM to announce "UTF-8 follows"; that's non-standard and Java won't interpret it as such. (Though their UTF-8 BOM is three bytes.) Yes I was sure that they were some sort of undisplayable character such as a tab or lf, but how do I get rid off them? Im sure the other app isnt sending those characters > Yes I was sure that they were some sort of undisplayable character such > as a tab or lf, but how do I get rid off them? > > Im sure the other app isnt sending those characters How are you sure? You've sniffed the traffic on the wire? -- Tim Ward Brett Ward Limited - www.brettward.co.uk >Ive sent some data via asocket to another app and when it returns the >data it contains two [][] squares at the start. how can I get rid of >these squares i thought they might be \r or \n's but there not Most likely those two squares are the unicode byte order marks. You simply have to notice them and not try to display them. See http://mindprod.com/jgloss/unicode.html for an explanation. see also http://mindprod.com/jgloss/encoding.html SignatureBush crime family lost/embezzled $3 trillion from Pentagon. Complicit Bush-friendly media keeps mum. Rumsfeld confesses on video. http://www.infowars.com/articles/us/mckinney_grills_rumsfeld.htm Canadian Mind Products, Roedy Green. See http://mindprod.com/iraq.html photos of Bush's war crimes > See http://mindprod.com/jgloss/unicode.html for an explanation. The Unicode Java applet referred to there: http://mindprod.com/jgloss/reuters.html no longer works, though the applet below displaying the source code does work. > The Unicode Java applet referred to there: > http://mindprod.com/jgloss/reuters.html > no longer works, though the applet below displaying the source code does > work. Roedy Green has this working again, with the Unicode Java applet referred to on http://mindprod.com/jgloss/reuters.html now at http://mindprod.com/applets/unicode.html. Thanks for the help guys, the server was sending a \r\n and the java string didnt know what to do with it 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 ...
|
Reply to this Message
|
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.