problem with java applet

[neelesh kumar]

sir,
i have an applet .in that some signals are there which are represented by ovals.if any signal fails that oval has to flash(toggle betwwen red and black colors like that).
problem is along with that oval, some part of the applet is flickering(mino rly)lightly from top to bottom for some time and steady for some time though i wrote the repaint coordinates properly.i want that remaining applet doesnt flicker lightly also.
why this is happening.i didnt get solution from 4days.i am trying.where is the problem i didnt get.
please help me

[JosAH]

sir,
i have an applet .in that some signals are there which are represented by ovals.if any signal fails that oval has to flash(toggle betwwen red and black colors like that).
problem is along with that oval, some part of the applet is flickering(mino rly)lightly from top to bottom for some time and steady for some time though i wrote the repaint coordinates properly.i want that remaining applet doesnt flicker lightly also.
why this is happening.i didnt get solution from 4days.i am trying.where is the problem i didnt get.
please help me

Are those signals 'real' signals, i.e.from the physical world? How fast do you
sample those signals? If you sample them very frequently and you change
colours very frequently when that sample 'fails' you might not even see your
oval blinking, i.e. it's blinking too fast to be seen by the human eye.

kind regards,

Jos

[neelesh kumar]

those are real signals(railway signals).
with signsls no problem.along with signals, remaining applet also flickering lightly for some time and some time steady.
in my code flash is thread.
try{
flash.sleep(500 );
}

[JosAH]

those are real signals(railway signals).
with signsls no problem.along with signals, remaining applet also flickering lightly for some time and some time steady.
in my code flash is thread.
try{
flash.sleep(500 );
}

From the information you supplied it *could* work, I can't tell. I would do it this
way: your 'Flash; object sleeps an amount of time, creates a certain Oval when
it wakes up, with a certain colour, position and size and delivers the Oval
object at a JComponent which collects it in a list. The Flash object invokes the
repaint method on the JComponent and repeats its sleeping cycle.

When the JComponents drawComponent method is invoked it simply draws all
the ovals in the list and removes them. Something along that line ...

kind regards,

Jos