java - matcher.group(1) return no result -

- 

    public class getprop extends activity {     @override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.main);         string file_proc = readfile();         textview tv = (textview)findviewbyid(r.id.tv);         tv.settext("read file contents sdcard : \n" + file_proc);     }     public string readfile(){         bufferedreader rdr;         string proc = "";         string line;         int linenumber = 0;         try {             rdr = new bufferedreader(new filereader("/proc/cpuinfo"));                  while ((line = rdr.readline()) != null) {                 linenumber++;             matcher matcher = pattern.compile("processor: (.*)").matcher(line);             if (matcher.find()) {                 proc = matcher.group(1);             }             }                    } catch (exception e) {             e.printstacktrace();         }         return proc;             } }

i want print 1 line /proc/cpuinfo txt file, processor: "result", result matcher.group(1). have no text in th result, problem?

this /proc/cpuinfo looks like:

processor   : 0 vendor_id   : genuineintel cpu family  : 6 model       : 42 /* etc */

there 2 problems regex:

  1. regular expressions case sensitive. either change processor, or use pattern.compile(..., pattern.case_insensitive).
  2. there whitespace between processor , colon. should change regex processor\\s*: (.*)

Comments

Post a Comment

Popular posts from this blog

html5 - What is breaking my page when printing? -

-
Image
i have questioner , don't know why when printing it's creating break before first question. live demo (link) i able resolve issue removing fieldset container had wrapped in.. having fieldset element causing of fields grouped together, , since not fit on first page, being pushed second page. removing fieldset element, able firefox print first 2 questions on page 1 identically chrome. it seems not new problem firefox , fieldset not playing nice found old bugzilla ticket 2008 has persisted , still being commented on in 2014 (link) if retaining fieldset important, found solution else came here (link) <script type='text/javascript'> $(window).bind('beforeprint', function(){ $('fieldset').each( function(item) { $(this).replacewith($('<div class="fieldset">' + this.innerhtml + '</div>')); } ) }); $(window).bind(
Read more

c# - must be a non-abstract type with a public parameterless constructor in redis -

-
when save object, got below error must non-abstract type public parameterless constructor in order use parameter 't' in generic type or method 'servicestack.redis.redisclient.store<t>(t) redisclass.getinstnace().store(msg); // error here redisclass.getinstnace().save(); as third party's class, can not edit how save object? could create wrapper around third party object call constructor, store wrapper? e.g. public class mywrapper { public thirdpartyobject thirdpartyinstance { get; set; } public mywrapper() { thirdpartyinstance = new thirdpartyobject("constructors"); } }
Read more

ajax - PHP/JSON Login script (Twitter style) not setting sessions -

-
i'm having trouble getting twitter style login work properly, reason gets stuck at session_register("useremail"); session_register("userpass"); and doesn't redirect after it. if enter wrong account data, works , appropriate error message pops up. this full code: <?php if(empty($_post['email']) || empty($_post['password'])) { die(msg(0,"all fields required")); } if(!(preg_match("/^[\.a-z0-9_\-\+]+[@][a-z0-9_\-]+([.][a-z0-9_\-]+)+[a-z]{1,4}$/", $_post['email']))) die(msg(0,"you haven't provided valid e-mail")); $host="localhost"; $username="root"; $password="x"; $db_name="x"; $tbl_name="x"; mysql_connect("$host", "$username", "$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select db"); $useremail=$_post['email']; $userpass=
Read more