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How to get a jframe to take up the whole screen without covering the taskbar in widows 10

So I have my JFrame and I have it to the size of my screen, but the bottom1 portion gets stuck under my task bar. (See screenshot)
Does anyone know how i could do this? I want to adjust the full screen size of my jframe to take the task-bar into account.

Blocking frame switch with Java

I would like to block the frame switch request of the user in my java Application; Example:
I have the main frame with full size and the setup frame with a smaller size (400,400 for example). While the setup frame is opened I wouldnt like to let the user to acess the Main Frame, he can do this only if he closes the setup frame.
That might one duplicated question and I'm sorry for that, but I couldnt find the specific term to research what I want, I was try something like "Window focus on java" but I think I was researching in the wrong direction..
Thanks in advance for the help

The best solution is to use a modal dialog. If this is not an option, you will have to create a handler yourself that fires whenever a frame gets focus and checks if it is the right frame. If not, the handler must focus on the important frame.

set child jframe or whatever swing component as modal window

Making custom UI in swing

I need to make a custom ui which looks like the following image :-
I know how to change the button to that arrow shape and everything else.But I can't understand how to move those close ,restore and minimize buttons to the center and give them round shape (on Windows).
On Googling ,I found how to make custom shape windows but it doesn't meet my requirements.
Can anyone please tell me how to do this or any link.??

You will need to create your own title bar as another panel with buttons and then remove the window decoration on the frame.
JFrame frame = new JFrame(...);
frame.setUndecorated(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//This will close the frame and exit
To minimize and maximize, listen for button events and use:
frame.setState(Frame.ICONIFIED);//minimizes
frame.setState(Frame.NORMAL);//restores
See Frame.setState(int) for details.

Java Swing - user alerts

I am trying to build a user alert mechanism by bringing up the window to the front and then flashing the icon on the screen for the user. I have two questions with regards to this approach:
How can you find the current window you are at in Java and then de-minimize it and bring to front?
Is there a mechanism in Java that would enable me to simply show the icon for a second or two and then hide it, in the middle of the screen? If not, what would be the way to achieve that?
Thanks a lot for any replies.

How can you find the current window you are at in Java and then de-minimize it and bring to front
Window[] allWindows = Window.getWindows();
returns arrays of all Top-Level Containers from current JVM e.g. J/Frame, J/Dialog(JOptionPane), J/Window,
you can to test for (example) if (allWindows[i] instanceof JFrame) {
then WindowState returned WindowEvent
by bringing up the window to the front and then flashing the icon on the screen for the user
use undecodated JDialog (works toFront, toBack) with
create only once time
setDefaultCloseOperations(HIDE_ON_CLOSE)
use Swing Timer for hide JDialog
Is there a mechanism in Java that would enable me to simply show the icon for a second or two and then hide it, in the middle of the screen? If not, what would be the way to achieve that?
have look at Java Translucent Window, put there Icon to the JLabel (or to the JButton)
use Swing Timer for flashing by hiding Icon or swithing bewtween two or more Icons (three or four is good)

I think the simplest way to get the window ancestor is :
SwingUtilities.getWindowAncestor(yourComponent);

How to over ride Dialog boxes over JFrames?

I Have a java program that does sort of this:
It starts off with dialog boxes, then after user clicks OK/Cancel or X or whatever, it goes to JFrames or dialog boxes. The JFrames also have buttons like Next/Ok, etc. As the program goes on, one JFrame (lets call it "Status Bar") is always visible on the screen and never goes away (that's what I want). (I don't want to dispose it because they hold important information that the user needs to see while making choices on future dialog boxes and other JFrames).
Now my problem occurs..when the future dialog box appears, I can't click on that JFrame "Status Bar". For some reason, I have to do something on the dialog box first. Like I have to click Ok/Cancel on the dialog box, if I get another dialog box (depends where on the program), I have same issue. Until I am blessed with another JFrame, then I can click on the "Status bar" JFrame, click buttons on it and all the good things presented on that JFrame.
One solution is to convert all my remaining dialog boxes to JFrames, but that would take a lot of time since I have all sort of dialog boxes. And then linking everything together will be time consuming.
So is there a function or code that I can tell Java...to give the user the power to interact with JFrame "Status Bar" while a dialog box is presented on the screen.
I Hope I am making sense. Please ask if something is not clear. I appreciate the help.

If you're using Java 6, you can use the new modality settings.
Modality in dialogs
Depending on your GUI design, you may wish to make the dialogs Document modal as opposed to modeless(equivalent to setModal(false)). Note that this will only work if the dialogs are shown in a different root container than the Progress JFrame.
Another option is to set a modal exclusion on the JFrame you want to be always visible. This way your dialogs can still block other frames and you don't need to remember to setModal(false) everytime you add a new dialog:
progressFrame.setModalExclusionType(Dialog.ModalExclusionType.APPLICATION_EXCLUDE);

Call setModal(false) method on all dialogues so that you will be able to go to JFrame while JDialog is open.