After tests it seems that the problem doesn't come from Timer , but the repaint() method ,
even with this code the bug is here. the bug is on Linux. 2017-04-11 11:07 GMT+02:00 Walter Laan <wl...@costengineering.eu>: > Note that the example code in JDK-8178091 sleeps on the EDT, so you’re > lucky it paints at all instead of hanging the UI. > > > > It looks like you adapted the code from http://codereview. > stackexchange.com/questions/29630/simple-java-animation-with-swing where > no-one experienced with Swing pointed out this error L. > > > > Using a javax.swing.Timer (not the java.util.Timer!) and it runs okay > (using Win10, Java 8u101): > > > > *private* *void* go() { > > > > *new* Timer(10, *new* ActionListener() { > > // *Les* *coordonnées* *de* *départ* *de* *notre* *rond* > > *private* *int* x = pan.getPosX(), y = pan.getPosY(); > > // *Le* *booléen* pour *savoir* *si* l'on *recule* *ou* non > *sur* l'axe x > > *private* *boolean* backX = *false*; > > // *Le* *booléen* pour *savoir* *si* l'on *recule* *ou* non > *sur* l'axe y > > *private* *boolean* backY = *false*; > > > > @Override > > *public* *void* actionPerformed(ActionEvent e) { > > // *Si* *la* *coordonnée* x est *inférieure* à 1, on > *avance* > > *if*(x < 1) { > > backX = *false*; > > } > > // *Si* *la* *coordonnée* x est *supérieure* à *la* > *taille* *du* *Panneau* *moins* *la* *taille* *du* *rond*, on *recule* > > *if*(x > pan.getWidth() - 50) { > > backX = *true*; > > } > > // *Idem* pour l'axe y > > *if*(y < 1) { > > backY = *false*; > > } > > *if*(y > pan.getHeight() - 50) { > > backY = *true*; > > } > > > > // *Si* on *avance*, on *incrémente* *la* *coordonnée* > > // backX est *un* *booléen*, *donc* !backX *revient* à > *écrire* > > // if (backX == false) > > *if*(!backX) { > > pan.setPosX(++x); > > // *Sinon*, on *décrémente* > > } > > *else* { > > pan.setPosX(--x); > > } > > // *Idem* pour l'axe Y > > *if*(!backY) { > > pan.setPosY(++y); > > } > > *else* { > > pan.setPosY(--y); > > } > > > > // On *redessine* *notre* *Panneau* > > pan.repaint(); > > } > > }).start(); > > } > > > > Hope that helps, > > Walter. > > > > *From:* swing-dev [mailto:swing-dev-boun...@openjdk.java.net] *On Behalf > Of *Patrick Chen > *Sent:* maandag 10 april 2017 12:23 > *To:* swing-dev@openjdk.java.net > *Subject:* Re: <Swing Dev> JDK-8178091 : Bug I will workin on > > > > (edit : for example this game coded in java : https://github.com/ > cloudStrif/GoldenSunD will work with java 7 > > but clearly not with java8 (linux 64 bits) because of lags) > > > > 2017-04-10 12:19 GMT+02:00 Patrick Chen <chen.j.patr...@gmail.com>: > > Hi every one , > > just wanted to inform that I am working to fix this bug. > > > > it is when we devellop animations thanks to repaint() method , > > for java 7 it works well > > but with java8 not , > > (linux 64 bits it doesn't really work ) > > > > so after watching the source code it seem that it is not a swing problem > > but AWT : Component.java . > > > > thank you > > > > > > >
