[Solved] java JTextArea(); problem

Question

Hello PROgrammers!

I have an issue using JTextArea(); in java...

issue:
When ever I try to write stuff on JTextArea(in app)... java writes the text on my panel aswell... so Whenever I delete text from my JTextArea... the text still remans in my panel... it does not gets deleted...

mycode setup: //these are some codes I believe causing this problem(not sure)
- panel.setLayout(null);
- panel.setBackground(new Color(255,0,0,200)); //RGBA

Other info:
- I have made my panel background color to glass color(transparent color) using rgba
- if I remove the transparency color, all works fine...

Please, share the solutions to me if you find one :) Thanks much!

https://www.dropbox.com/s/55venjpllwxmspf/VID_20200509_141155477.mp4?dl=0

- Orange

Answer 1

Hello Mr. 🍊range

I can't reproduce your problem.

JPanel panel = new JPanel();
panel.setLayout(null);
panel.setBackground(new Color(255, 0, 0, 200));
//java.awt.Color

JTextArea area = new JTextArea();
area.setSize(100, 100);
//frame size = 200, 200

panel.add(area);

//add panel to frame

Which Color package do you use?
The Background is a kind of red (brown/red).

Answer 2

Denise Roßberg check out this 6sec clip... About the issue

https://www.dropbox.com/s/55venjpllwxmspf/VID_20200509_141155477.mp4?dl=0

the text that I'm writting applies to all my panel... so whenever I deleted text... it would not delete on my panels

somehow my JtextFiled and my panel are synced crazy

never had this issue before ;(

Answer 3

Mr. 🍊range

Very strange.

Can you please show me your complete code?

Btw: You are not using a PC? (I am wondering if your app or your smartphone causes this trouble).

Answer 4

I have no idea. And I am wondering which jdk you are using. Applets are deprecated and not supported since java 9 I guess.

Answer 5

Denise Roßberg
Oh... thanks for your help though 👍

Happy coding!

Answer 6

Denise Roßberg

I have finally fixed it LOL...

It's repainting issue

I added a new thread, and from there I repaint my panel every 3ms... By this way, when I backspace text, it's refresh the panel and runs smoothly again

Idk whether is this the best way... But whatever, it's works fine for now

That was nightmare XD

Thanks for your help again though

Answer 7

Denise Roßberg for sure...

and I'm using pc (VScode)

***desktop application***

https://code.sololearn.com/cfcr8HMfSk72/?ref=app