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Change information in a dialog box from another dialog box in WindowsBuilder?

In windowsbuilder, I would like to change information from a seperate window, more specifically a table, from my main window. Is it possible to use my information from one seperate window to change it in another box?
Basically, take information from here:
And put it into this table:
Is it possible? If so, how? Thank you in advance.

Yes, it is possible - but not in Windows Builder.
Create an object which will hold the information from the first window and pass the information from the window to the object. Next, pass the object to the second window (how you do this will depend on how you've configured your window objects). Finally, populate the table with the information from the object.
As far as I know, there is no direct way to do this in Windows Builder, although the above method will work fine provided you can pass objects from the first window to the second.

Calling a Java method using javascript from within a JPanel

I have a Java application which displays results on a JPanel. The results are displayed using HTML by using a JLabel.
Now I want to let the user interact with the local application by allowing local methods to be called when the user clicks on a link in that HTML document.
Is this possible?

To answer you question, then, it is possible, however you cannot use a JLabel, you need to insert a JavaFX component, and then you can set your class as a window variable on the DOM, and thus your methods can be called from JavaScript.
Have a look at this answer on this question. It looks like they are doing exactly what you want.

How can I combine multiple ACM graphics objects in Java into one object?

I have finished writing a Hangman game, but I want to move the hangman out of the canvas when the game is over. I create that hangman with any partition of his body. When I move the object it can move only one object at a time. How can I bunch them together?

You have to create an object of the class GCompound. This class of object allows you to create new object that can be manipulated like GOval and so. In the Stanford course, there is an example called GFace.

Probably you can refactor your code to make the whole hangman one object through the whole implementation and whenever needed make different parts visible. When the time comes to remove him, just dispose of the whole thing either by resetting them to non-visible or try making a new object I guess... If you cna post the code of your implementation I may be able to give you some more help...

adding another class to my java applet program

I am making a knight's tour implementation in java, and currently I have everything jumbled into one giant mess of code.
I have a class called MainFrame which includes the code to solve the knights tour as well as methods for the menu, etc.
I want to create a new class called KT (for knights tour) which will contain the code for the algorithm, but I'm having lots of issues doing that.
I don't want to post code here because i dont want someone from my class copying or something, so I will just briefly explain.
In class KT, I have declared the variables, arrays, etc. I have methods such as printSolution, move, redo (the backtracking), etc.
However I am unsure how to tie in the code for the buttons (which is declared in MainFrame). For example, I have a loop in the print method that prints the correct solution on the 8x8 board. Right now I'm being asked to create a new method for the button even though I have the button in class MainFrame.
I have a KT k = new KT(); and then I'm launching MainFrame. Is that where I am doing it wrong or is it something really simple that I'm being too dumb to figure out?
tl;dr program works well when i have everything in one class, but i want to make two classes and make everything "look" nice

First of all, give your KnightTour class an actual name. Like, you know, KnightTour. If you were coding this for cash money, the next guy who had to read your code would want to punch the guy who called a class something like KT.
Think about creating this class so that you can use it from a GUI controller like your button and menu laden applet. But so that it can ALSO be used from, say, a character based application where you type commands at a prompt and have your new class evaluate those commands.
The reason I suggest this is because it will force you to create your KnightTour class so that it is PURELY the "business logic" for your app. By that I mean that your KnightTour class should not know anything about buttons, menus, GUIs, text interfaces, or anything like that. You need to think about your KnightTour class in terms of what it must accomplish.
I don't really know what KnightTour does. So I'll just throw out some ideas of what kind of functionality it might need to support. I'm assuming everything takes place on a chess board?
Get the state (occupied, unoccupied) for a given board location (x,y)
Put a chess piece (piece enumerator) on a given location (x,y)
Validate placement of a piece (piece enumerator, location x,y)
Suggest a move, returning a Suggestion object with a piece enumerator and location
Reset the board to start all over.
Now, when you push a button that says "place a piece on 5,5" then you'll handle that event in your GUI controller, and then call the "set piece" method (#2 above) to do that work. If you have a character based application, when you type "put knight at 5,5" then you'll parse that text, and then invoke #2 above. The key point is that both of those user interfaces access the same KnightTour methods to do the same work.

In the actionPerformed method of your MainFrame class just call the appropriate methods to get the solution from KT (which, by the way, I would rename to KnightsTour...readability counts).
Ideally you want all your logic (the model) broken up into sensible methods in KnightsTour, and all your display and button-handling code (the view and controller) in MainFrame. If that's difficult, it's a good sign that you need to rethink how you divided things into methods (and what you're doing with global state...which is frowned upon).
I'm sorry I can't be more specific--I'm kind of hand-tied since you didn't post code.

singleton JFrame for different objects

I have a "MainWindow" with a table that shows all books in an overview. If I select an entry (or more than one) and click "Show selected", new JFrame(s) are opened with the corresponding objects ("DetailView"). Since the "MainWindow" is still active, I'm able to open the same item twice (two "DetailView" for the same object).
I'd like to make this a singleton window depending on the object: if the same object is selected for the second time, I'd like to get the focus to the already opened JFrame.
I'm quite new to java, so this may be the wrong approach, and maybe already included in the Swing-Framework, though Google didn't give me any hints.

You need some sort of "JFrame Registry", a simple Map<Object, JFrame> that allows looking up the correct JFrame for a given object.
Whenever you create a JFrame for an object, you register this frame(value) with the object(key). Whenever you have an object, you call map.get(object) and will receive the correct JFrame instance.