Is there any way block Control-Alt-Delete in java? [duplicate] - java

This question already has answers here:
Disable the Ctrl-Alt-Delete event through Java program
(4 answers)
Closed 7 years ago.
Is there any way to block the control key in java. I have looked and looked but I have not found any way to do it thanks in advance

There is no way to block CTRL+ALT+DELETE. In any way, shape or form. It is an absolute guarantee against hacking.

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onKeyReleased does not work when a character is typed [duplicate]

This question already has answers here:
How to disable Button when TextField is empty?
(3 answers)
Closed 3 years ago.
I want to disable the button when the text fields are empty.
I have created two fields with the onKeyReleased property
Sorry i sent it unintentionally.
Something like btn.disableProperty().bind(field.textProperty().isEmpty()) should work.
In the future please add a compilable skeleton and what you have tried so far to your question. That makes it way easier to help.
And welcome to stack overflow!

Can we introduce some java or any other language wrapper on top of python code in order to conceal/encrypt our python code from being re-engineered? [duplicate]

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How do I protect Python code from being read by users?
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how to encrypt python source code? [duplicate]
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How to obfuscate Python code effectively? [duplicate]
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I am currently, working on deep learning algorithm with an objective of devising optimum method for edge devices where trade-off between the accuracy & speed will be minimum. For this reason, I want to hide my code for saving my work being concluded in span of last 6 months from getting public in few minutes. Any other way or hint will be appreciated for doing same.

Getting the state of a window [duplicate]

This question already has answers here:
Getting active window information in Java
(3 answers)
Closed 4 years ago.
I'm trying to get the state of a window on Windows. I have to check if the window of word is active or inactive. I don't find any answer to this problem in Google.
Does anyone knows how to do this or if this is possible at all?
Window activeWindow = javax.swing.FocusManager.getCurrentManager().getActiveWindow();
The code above returns always NULL.
Thank you for your answers.
Regards
Roman
Try to use frame.hasFocus() or frame.isFocusOwner()
https://docs.oracle.com/javase/7/docs/api/javax/swing/JFrame.html

Change background of a specific line of JTextArea [duplicate]

This question already has answers here:
Highlight one specific row/line in JTextArea
(3 answers)
Closed 8 years ago.
Is there any way to change the background of a specific line of JTextArea?
I found a class that does what I want. Those interested: http://www.camick.com/java/source/LinePainter.java
Thanks.

Gwt check if object has focus [duplicate]

This question already has answers here:
Closed 10 years ago.
Possible Duplicate:
Why is there no isFocused() in GWT?
Hi guys is possible check if a specific object has focus ? My problem in my web app is determine which object has focus when i press tab button, for each focus i need to do a specific action. thx
This is already addressed here - Why is there no isFocused() in GWT?
Please use the stackvoverflow search!!!!

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