java - Calling and using the .interrupt() method? -


how call .interrupt() method? when have thread.sleep(1000), when , call .interrupt() method? after? want stop thread.sleep(1000) midway.

edit::

i'm having trouble stopping thread in middle. part of code, in stoplightthread class have problems on first if statement. supposed wait @ least 10 secs allow user press button can change light, if button pressed should stop running thread in case thread.sleep(40000). happens when press button changes light not stop thread. if press button while there still 20secs left add 20secs 10secs yellow light, making yellow 30 secs.

edit: if wondering, stoplightcanvas.x == 3 green, stoplightcanvas.x == 2 yellow, , stoplightcanvas.x == 1 red.

class stoplightcanvas extends canvas implements actionlistener {        public void actionperformed(actionevent e)     {         if (e.getsource() == cross) {             ispressed = true;             if (x == 3 && cancross)                 x = 2;              }         repaint();     }  }   class stoplightthread extends thread {     stoplightcanvas stoplightcanvas;      stoplightthread(stoplightcanvas stoplightcanvas) {         this.stoplightcanvas = stoplightcanvas;     }      public void run()      {         if (stoplightcanvas.x == 3){                thread.sleep(10000);                stoplightcanvas.cancross = true;                thread.sleep(40000);                if(stoplightcanvas.ispressed)                    stoplightthread.interrupt();            } else if (stoplightcanvas.x == 2) {                thread.sleep(10000);                } else if (stoplightcanvas.x == 1) {                thread.sleep(60000);            }        } catch (interruptedexception e){}             stoplightcanvas.togglecolor();            stoplightcanvas.repaint();         }                } }

if going call interrupt() @ all, you'd call different thread sleep().

if want interrupt sleep() midway same thread, can this:

   thread.sleep( 500 );    ...     thread.sleep( 500 );

all said, sleep() can code smell.

edit (after op edit):

call interrupt() on stoplightthread gui thread in actionperformed() method.


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