Waiting for another GUI to finish

[viscid steeple]

Hey all,
From one GUI class, I am calling another one, however, it does not wait for the newly made GUI to finish before running the code afterwards, which is an issue as I am retrieving values from the newly made window. My code:

            EditingQuestion editQuestionGUI = new EditingQuestion(id,question,answer);

            System.out.println(editQuestionGUI.new_question);
            System.out.println(editQuestionGUI.new_answer);

The EditingQuestion class is a class which creates a new JFrame window, but it doesn't wait for the editQuestionGUI to finish being used and it only prints null. Any ideas on how to fix this?
Thanks.

[coral nimbus]

Hey, @viscid steeple!
Please remember to /close this post once your question has been answered!

[wind cobalt]

what are tou planning to do?

[viscid steeple]

I would like the code to pause while the editQuestionGUI is still being displayed, and then continue once it has been closed/done with

[wind cobalt]

and what do you want to happen if it's closed?

[viscid steeple]

for the code to continue running

[wind cobalt]

I see you will need while loop

I recommend using it on another thread

[viscid steeple]

Would it be possible for you to elaborate?

[wind cobalt]

on phone? not really

I may tell you what to do

[viscid steeple]

Well I don't understand what you mean by "while loop", it doesn't really tell me much .-.

[wind cobalt]

you dont know what it is?

while () {

[viscid steeple]

yeah it's an infinite loop, no?

[wind cobalt]

it CAN be infinite loop

but doesnt have to

alright

I'll tell you what to do

if you want

[viscid steeple]

Uhh, sure xd

[wind cobalt]

1. create class
2. implement Runnable
3. implement method (run)
4. put while (true) loop there
5. tell me if done

do you understand everything?

for now

[viscid steeple]

?

[wind cobalt]

put true inside while brackets please

[viscid steeple]

i have

[wind cobalt]

while (true)

[viscid steeple]

i know i know, i just did it after screenshotting haha

[wind cobalt]

alright

now create field

[viscid steeple]

field?

[wind cobalt]

private final JFrame frame;

field

[viscid steeple]

oh ok

[wind cobalt]

then constructor

ALT + INSERT

Select constructor

and with JFrame parameter

[viscid steeple]

ok now this is where im losing u

[viscid steeple]

huh?

why would i need that here

[wind cobalt]

to check if frame is being opened?

[viscid steeple]

oh you want me to create the frame in this class?

[wind cobalt]

no

to get the frame

from class where you create it

[viscid steeple]

oh

ok

I'm lost now...

[wind cobalt]

just do what I type

have you created field?

or you know what? fuck it

I will make it simplier

[viscid steeple]

🤦‍♂️

[wind cobalt]

you vhoose

seperate class

or

in same class

[viscid steeple]

I would prefer to test it in a seperate class before changing things i've already amde

[wind cobalt]

alright

private final JFrame frame;

public HaltCodeWhileGUI(JFrame frame) {
this.frame = frame;
}

done?

[viscid steeple]

yes

[wind cobalt]

send ss

to make sure

[wind cobalt]

alright its good

inside while loop

put if statement

if (frame.isIconified()) { (im not sure how to type that)

intellij should tell you

is there method like that?

[viscid steeple]

I'm not seeing something like that

[wind cobalt]

then

frame.getExtendedState() && Frame.ICONIFIED != 0

inside if ofcourse

[viscid steeple]

frame.getExtendedState() returns int

not boolean

[wind cobalt]

so make it

!= 0

[viscid steeple]

0 = false 1 = true?

alr or that

[wind cobalt]

frame.getExtendedState() != 0

[viscid steeple]

done xd

[wind cobalt]

go back to your class

[wind cobalt]

this

[viscid steeple]

ok

[wind cobalt]

do:
new Thread(() -> new HaltCodeWhileGUI()).start();

[viscid steeple]

alr

it runs with no errors, but whats meant to go in here?

[wind cobalt]

put there System.out.println(System.currentTimeMillis());

just for test

[wind cobalt]

forgot to add .start

make sure you have it

[viscid steeple]

Doesn't print anything

still just prints the null before the gui is finished

[wind cobalt]

my bad

do

frame.getExtendedState() == Frame.ICONIFIED

inside if

[viscid steeple]

still doesnt do anything..

[wind cobalt]

did you hide your frame?

[viscid steeple]

wdym by hide? like setVisible()?

[wind cobalt]

no

just minimalize

[viscid steeple]

no

[wind cobalt]

then run program and do it

[viscid steeple]

it doesn't do anything, the same issue 😅

[wind cobalt]

nothing is being sent in console?

[viscid steeple]

nothing

[wind cobalt]

just to make sure

put System.out.println("abc");

before

the if

[viscid steeple]

hm, doesn't print

so the while loop isnt even started

[wind cobalt]

make:
HalfCodeWhileGUI gui = new HalfCodeWhileGUI(frame);
new Thread(gui).start();

[viscid steeple]

HalfCodeWhileGUI class being what?

oh Halt

[wind cobalt]

wait

now

[wind cobalt]

oh sorry syntax

btw. I edited text

[viscid steeple]

tis ok

[viscid steeple]

oh, that works

[wind cobalt]

alright

so now remove the System.out... before if

and run again

[viscid steeple]

that doesnt work

if i put the print before if, it spams

but whe n iremove it, the error stays

[wind cobalt]

can you put another system out println

before if

but now

System.out.println(frame.getExtendedState());

[viscid steeple]

0

and only prints it once

[wind cobalt]

any errors?

[viscid steeple]

nope

[wind cobalt]

can you go to place where you create jframe?

[viscid steeple]

yes?

in the class of the jframe?

[wind cobalt]

can you put this line:

yes

frame.setExtendedState(Frame.ICONIFIED);

[viscid steeple]

oh

yeah now it owrks

[wind cobalt]

does it send

message?

like random numbers

384584833

[viscid steeple]

yeah it prints the stuff in the if statement

and stops when the gui is done

[wind cobalt]

yes

is that what you wanted?

and put whatever you want inside

the if

[viscid steeple]

yeah but the gui starts minimised now?

[wind cobalt]

change it to NORMAL

[viscid steeple]

and also chnage it in the if statement?

[wind cobalt]

no

it should run if it is minimalized, right?

[viscid steeple]

yeah

[wind cobalt]

alright, dont forget to close ticket and I'm glad I could help

[viscid steeple]

It doesn't work xd

[wind cobalt]

what

gotcha

[wind cobalt]

Frame.ICONIFIED, not frame.ICONIFIED

Frame with big F

[viscid steeple]

OH

still doesn't work 😅

[wind cobalt]

when u changed to normal?

[viscid steeple]

so it still prints the nulls after, but when i minimise the window it will run the print lines in the while loop too

[viscid steeple]

same results

[wind cobalt]

I mean no

in the if

it has to be iconified

but when you create frame

[wind cobalt]

do you even minimalize it?

[viscid steeple]

no

[viscid steeple]

I'm not sure I understand

[wind cobalt]

and that is the reason

why it doesnt work

cause you dont minimalize window

[viscid steeple]

i dont want it minimalize, i want the user to be able to interact with the window ofdsjdfsidps

and then close it when theyre done

[wind cobalt]

but you wanted this code to work when window is minimalized

[viscid steeple]

uhh

no??

xD

I said that?

[wind cobalt]

?!??!

[wind cobalt]

when you minimalize

and maximalize

or you wanted it when you close frame?

[viscid steeple]

so

I am creating a GUI

from another class

while that GUI is open, I don't want it to run the code below

I want them to be able to interact with the newly made GUI

and once theyre done with it, close it

and then it'll continue running the code below

[wind cobalt]

so now

when gui is closed

run code

yes?!

[viscid steeple]

yeah, when the gui has been disposed continue running code

[wind cobalt]

omg

frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
frame.addWindowListener(new WindowAdapter() {
    @Override
    public void windowClosing(WindowEvent event) {
        your code
    }
});

[viscid steeple]

that's an event for when the window closes?

thats still not what i need 😭

Look, I am creating a GUI here

the variables i am printing out below

are null

[wind cobalt]

when window is closed, run program?

[viscid steeple]

because they print immediately after the gui is displayed

[wind cobalt]

alright

put

[viscid steeple]

i need the code to stop there while the editQuestionGUI is displayed, but when the GUI has been disposed

it will continue

[wind cobalt]

synchronized(this) {
this.wait();
}

before system out prontln

[wind cobalt]

and hrte

[viscid steeple]

uh.. why here?

[wind cobalt]

wait

to get

when program is closed

[viscid steeple]

oh, ok

[wind cobalt]

no

I have new idea

perfect idea

[viscid steeple]

oh?

[wind cobalt]

public Runnable runnable = () -> {};

put this as a field

in frame class

in EditQuestion

[viscid steeple]

ok

[wind cobalt]

done?

[viscid steeple]

yus

[wind cobalt]

then

do this:

editQuestionGUI.runnable = () -> {
System.oit......
};

you know what to put there

judt move this system out println there

done?

[viscid steeple]

ok

[wind cobalt]

ok then now

[wind cobalt]

inside event

put

this.runnable.run();

and bang

ready

[viscid steeple]

nothing...

i added the event into the class

created it like this

still just prints the 2 nulls

[wind cobalt]

try to close it

to close gui

[viscid steeple]

yeah it just prints the test

and doesnt close

[wind cobalt]

replace: DO_NOTHING_ON_CLOSE

with: EXIT_ON_CLOSE

[wind cobalt]

just like u wanted

[viscid steeple]

I don't think you're understanding me still 🤦‍♂️

so

[wind cobalt]

move those 2 System.out ... inside rumnable

[viscid steeple]

so now i need to put all the code after it in that runnable?

[wind cobalt]

yes

and check

if works

[viscid steeple]

it doesn't work fdsojfdsiodsfkp

it doesn't matter, I'll just figure this out some other time

[wind cobalt]

no messages?

or what

[viscid steeple]

It's okay, i'll just work on other things and come back to this later

Thank you for your help, even tho we didnt get to a solution in the end :c

I appreciate it, though 🙏

[wind cobalt]

alright

you know what

I found out

last try

move your 2 System out println

[wind cobalt]

to this listener

alright?

[viscid steeple]

okok

[wind cobalt]

and remove editQuestionGUI.

just field

so System.out.println(new_question);

[viscid steeple]

yes but i dont want to access it in that class, i want to access those variables where they are rn xd

[wind cobalt]

but it works?

[viscid steeple]

yes

because it's in the same class

[wind cobalt]

do you still have runnable?

@viscid steeple

inside this class

etc?

[viscid steeple]

yea

[wind cobalt]

replace it to Consumer<EditingQuestion>

and () -> {} to eq -> {}

done?

[viscid steeple]

yea

[wind cobalt]

alright

now go to listener method

and do

runnable.accept(this);

done?

[wind cobalt]

do🇺

EditingQuestion.this

[viscid steeple]

alr

[wind cobalt]

works?

[viscid steeple]

yeaa :D

[wind cobalt]

wait

have you run the code?

[viscid steeple]

yea

[wind cobalt]

and works?

[viscid steeple]

i guess i'll need to keep all the code after in this runnable -.-

but yea it works

[wind cobalt]

how the fuck it works

you hasn changed it

yet

[viscid steeple]

😂

[wind cobalt]

yes you have to

but

try replacing editQuestionGUI with eq

if work, keep it, if not, undo it

[viscid steeple]

where

[wind cobalt]

inside runnabel

runnable*

[viscid steeple]

this?

[wind cobalt]

yes

and send screenshot

[viscid steeple]

it works too

[viscid steeple]

of what

[wind cobalt]

of code

to make sure

[wind cobalt]

keep it then, more safe

cause that was plan

[viscid steeple]

putting code in that runnable wont be different to having it outside a runnable tho, right? it's not slower or anything?

[wind cobalt]

no diff

[viscid steeple]

alr alr

[wind cobalt]

maybe 5 milliseconds

but what is it?

[wind cobalt]

its all ok

[viscid steeple]

not noticeable

[wind cobalt]

perfect

[viscid steeple]

so it's alr

[wind cobalt]

yea

close ticket and have a nice day

and good luck

[viscid steeple]

Thanks for helping man

took a while but we did it haha

[wind cobalt]

np

[viscid steeple]

Thank you again, have a good day :)

[wind cobalt]

same

@viscid steeple close ticket