java - Main purpose of SwingUtilities invokeLater -

-

मेरे पास यह कोड स्निपेट है 

  import javax.swing.SwingUtilities; सार्वजनिक वर्ग क्लाएंट 1 {सार्वजनिक स्थिर शून्य मुख्य (स्ट्रिंग [] एल्ग्स) {स्विंग-यूटियल्सइन्वेकलेटर (नया रननाबल) (सार्वजनिक शून्य से चलाया गया) (// नया मायवंडो ("बेओग"); नया मायवंडोव वी 2 ("बायोग");}} ); }}

क्या अंतर है अगर मैं स्विंग यूटीज का उपयोग नहीं करूँगा?

मान लें कि कोड चलाने विधि के भीतर एक UI तत्व को संशोधित करता है यदि आप गैर-यूआई थ्रेड से उस कोड को निष्पादित करने का प्रयास करते हैं, तो वह असफल हो जायेगी: सभी UI कार्रवाइयां यूआई थ्रेड (उर्फ घटना प्रेषण धागा ) में होनी चाहिए।

SwingUtilities.invokeLater आपको "कोड के इस बिट को चलाने के लिए कहने की अनुमति देता है, लेकिन ऐसा यूआई थ्रेड में करें" जैसे, पृष्ठभूमि थ्रेड्स के लिए यह बहुत अच्छा है जो अभी भी यूआई को अपडेट करना चाहता है। एक और विकल्प का उपयोग करना है, लेकिन यह हमेशा उपयुक्त नहीं है क्योंकि इसकी आवश्यकता है कि "जानता है" कोड को UI थ्रेड का उपयोग करने की आवश्यकता कोड है जो पृष्ठभूमि धागा सेट करता है।

अधिक जानकारी के लिए देखें ।


Comments

Post a Comment

Popular posts from this blog

html - Trouble with image gallery on codepen -

-
I get my first project html & amp; CSS, but there is some problem. I am practicing using Codepean and my gallery was running well but I am trying to add the last line of images and it is all messing up and I do not know why For some reason, when I try to add that chess board it all gets worse. I am still very new so I hope to learn a lot. Thank you. [1]: http://codepen.io/zenturtle/pen/ezDGC Margins are causing issues when you use margins in the position of an element, then you push the elements around it too. Use a solution: Status: Relative and then use Positioning Properties: Above , Below , left , right example: #chess {status: relative; Left: 555px; } Another solution is to use status: absolute . Location Location: Relative on & lt; Div id = "perimeter" & gt; Status: Full on every Example: #chess {status: full; Bottom: 122px; Correct: 230px; } Similarly you are in the position of chess image...
Read more

java - org.apache.http.ProtocolException: Target host is not specified -

-
I have written a simple httprequest / response code and I am getting this error below: I used to type in my classpath httpclient, httpcore, common -Codecs and general logging. I am very new to Java and I do not know what's going on here. Please help me. code: import org.apache.http.client.HttpClient; Import org.apache.http.client.methods.HttpGet; Import org.apache.http.HttpResponse; Import org.apache.http.impl.client.HttpClientBuilder; Import org.apache.http.Header; Import org.apache.http.HttpHeaders; Public class UnshorteningUrl {public static zero main (string [] args throws exception {HttpGet request = zero; HTTP Client Client = HTTP ClientBuilder.credit (). Build (); Try {Request = New HTTP Gate ("trib.me/1lBFzSi"); HttpResponse httpResponse = client.execute (request); Header [] header = httpResponse.getHeaders (HttpHeaders.LOCATION); // Preconditions.checkState (headers.length == 1); String new url = header [0] .getValue (); System.out.println ("new url...
Read more

How to access user directory in lazarus? -

-
After I am trying to open file changelog.txt and it does not matter if I open it Need to have the user open it though it is always located in the ~ / directory. Enter the file here. Here is my code: Process TForm1.FormCreate (From: TObject); Var myFile: textfile; Line: String; Start AssignFile (myFile, '~ / changelog.txt'); Reset (myFile); While EOF (MyFile) does not readLn (myFile, Line); Label3.Caption: = (Label3.Capttion + Line + # 13 # 10); End; CloseFile (myFile); End; This does not work, however, if I replace ~ with the actual user name, then it works, however, I use the username of each user Can not know which will run my program. Any idea how can I get the username that started the program? ! Thanks Edit1: I have tried this, but this also includes a new line: RunCommand ('/ bin / bash', ['- - C ',' Whoami '], users); This is normal. The concept of "~" is an shell level and thus requires a separate shell elev...
Read more