Java Swing : GUI frozen - jstack interpretation
问题 I have a Gui application in swing that prints a ticket on a serial thermal printer. When i hit the button that launch this action, my GUI is frozen. I think that's because the code is executed on the EDT. I used jstack to be sure but i don't understand the results below : Full thread dump Java HotSpot(TM) Client VM (23.3-b01 mixed mode, sharing): "Thread-12" prio=6 tid=0x03012000 nid=0xd04 runnable [0x038ef000] java.lang.Thread.State: RUNNABLE at gnu.io.RXTXPort.eventLoop(Native Method) at