java - How to change automatically a Jlabel -


hi trying create java desktop application can move images automatically every 5 seconds. able this. problem use own image , put images on single jlabel. did following code

how can this?

private static class imagepanel extends jpanel {          url[] urls;         imageicon[] image;         bufferedimage[] images;         random rand = new random();         jlabel imagelabel;          public imagepanel() {             urls = new url[4];              try {                  urls[0] = new url("http://i.stack.imgur.com/ncshu.png");                urls[1] = new url("http://i.stack.imgur.com/uvhn4.png");                urls[2] = new url("http://i.stack.imgur.com/s89on.png");                urls[3] = new url("http://i.stack.imgur.com/qek2o.png");                  images = new bufferedimage[5];                images[0] = imageio.read(urls[0]);                images[1] = imageio.read(urls[1]);                images[2] = imageio.read(urls[2]);                images[3] = imageio.read(urls[3]);              } catch (malformedurlexception ex) {                 ex.printstacktrace();             } catch (ioexception ex) {                 ex.printstacktrace();             }              setbackground(color.black);              timer timer = new timer(5000, new actionlistener(){                 @override                 public void actionperformed(actionevent e) {                     repaint();                 }             });             timer.start();         }          private int random() {             int index = rand.nextint(4);             return index;         }          @override         protected void paintcomponent(graphics g) {             super.paintcomponent(g);             bufferedimage img = images[random()];             g.drawimage(img, 0, 0, 400, 400, 0, 0,                     img.getwidth(), img.getheight(), this);         }          @override         public dimension getpreferredsize() {             return new dimension(400, 400);         }     } }

thanks in advance

" problem want use own image , want put image on single jlabel."

the program seems working web urls. guess problem how use own file images.

what should place images in package in project, like

projectroot          src             resources                    image1.png                    image2.png

then can replace url this

//urls[0] = new url("http://i.stack.imgur.com/ncshu.png"); urls[0] = imagepanel.class.getresource("/resources/image1.png"); urls[1] = imagepanel.class.getresource("/resources/image2.png");

see more @ embedded-resource wiki info learn more how use embedded resources.

this code looks familar ;-)

edit

as per question title , question jlabel, code doesn't use jlabel. paints image. if want use jlabel instead, can use imagelabel.seticon(images[randon()]) change label icon. can in timer listener


Comments

Post a Comment

Popular posts from this blog

android - Get AccessToken using signpost OAuth without opening a browser (Two legged Oauth) -

i using signpost oauth access data magento server. have read various tutorials on same , reach point open browser user can enter credentials. however, per requirement have automate part. hence, user should not browser page. have set-up done on server side ( magento ), hit url , returned call page. same through program in android. i have tried below, consumer = new commonshttpoauthconsumer(key, secret); provider = new commonshttpoauthprovider(oauth_init_url,access_token_url, authorize_url); try { provider.retrieverequesttoken(consumer, oauth.out_of_band); log.d("tokens" , consumer.gettoken() + " -- " + consumer.gettokensecret()); } and request tokens. dont know how bypass next step. tried directly accessing accesstoken (stupid of me) provider.retrieveaccesstoken(consumer, "mycallback://callback"); no luck, ends in oauth.signpost.exception.oauthnotauthorizedexception: authorization failed (server replied 401). ...
Read more

org.mockito.exceptions.misusing.InvalidUseOfMatchersException: mockito -

getting error org.mockito.exceptions.misusing.invaliduseofmatchersexception: invalid use of argument matchers! 1 matchers expected, 2 recorded. exception may occur if matchers combined raw values: //incorrect: somemethod(anyobject(), "raw string"); when using matchers, arguments have provided matchers. example: //correct: somemethod(anyobject(), eq("string matcher")); at when( getprogramservice .callservice(any(getprogramtype.class))) .thenreturn(jaxbresponse); please explain error , possible resolution the code posted looks fine; don't see problem it. code before or above causing exception. key here: invalid use of argument matchers! 1 matchers expected, 2 recorded. any , used above, doesn't return "special kind of null" or "special kind of getprogramtype"; don't exist. instead, returns null , side effect puts matcher on stack. whe...
Read more

google shop client API returns 400 bad request error while adding an item -

i'm working on solution add items in google shopping market java application. following tutorial real mess because of missing classes of laste release, after setting 1.5-beta maven managed make base example typecheck correctly classes. still can make simple task of adding 1 item. instead of posting whole code i'm posting part creates product feed. private product createproduct(string id) { product product = new product(); product.title = "red wool sweater"; product.content = new content( "text", "comfortable , soft, sweater keep warm on " + "cold winter nights. red , blue stripes."); product.appcontrol = new appcontrol(); product.appcontrol.addrequireddestination("productads"); product.externalid = id; product.lang = "it"; product.country = "it"; product.condition = "nuovo"; product.price = new price("eu...
Read more