Get a map of the United States Draw it on a JPanel Add a click handler to the JPanel In the click handler, retrieve information where the user clicked from the event Have a set of polygons of all the state boundaries Iterate through all the poloygons to check if the user clicked inside one … Read more
In CreateNewJTextField: this.getContentPane().setLayout(new FlowLayout()); This create a Pane and sets a default layout. Pane is like a piece of paper on which you draw. JTextField field3 = new JTextField(10); add(field3); This creates a text field and adds it to that pane. In createAndShowGUI, you are adding this pane to a JFrame(the frame with minimize, close … Read more
One way is to make your Ball class an actual Swing component. Then you can use the ComponentMover class. Edit: how do you make a class into a swing component Basically, you move your draw(…) code into the paintComponent() method of JComponent. Here is a simple example that does all the custom painting for you … Read more
You can solve tic-tac-toe just by enumerating all the game states. There are a few corners you can cut, but not many. Here is a nice graphical representation of how to do this. http://xkcd.com/832/
I have learned that extending JFrame and JPanel is bad But if you need to draw in the GUI, you often need to extend JPanel, and that’s exactly what you should do here. For example the code where you draw with a Graphics object should be inside of the JPanel’s protected void paintComponent(Graphics g) method. … Read more