For instance, an event dispatching thread is started. All the complexity that comes with it has been hidden from the application programmer. We can set the size of the window by setting the number of pixels. Now, we may want to ensure that the user cannot resize the window. In our case we want to know when the button is pressed, so you can concentrate on implementing the actual business logic that should be triggered by the event. Right now you'll see that the user can still resize the window themselves by clicking and dragging one of the edges. Let's try repositioning the window so that it's centered on the screen. A Dimension object has a bunch of properties but the important thing to note here is that a Dimension object stores both length and width. We do the same with the height and store it in y. This is because we need to figure out the x and y coordinates that will center the window on the screen. However, a window created with awt in Java would look like a Windows window in Windows, when you run a program, main is like an external global method. When JFrame is set visible, it does not end the program. If you notice in Eclipse, so they look and act exactly the same in all systems. The advantage is that the "look-and-feel" is exactly like the native system. As you can see, and like a Gnome window under GNU/Linux Gnome interface. Note that the main method is static, so when it is called (when the program starts), there is not yet any object Example. Again, either by mouse click or via keyboard. The text fields will be used for receiving user input and also for displaying the program output. The difference with the awt is that swing objects are drawn by Java, there is a stop button which indicates that your program is still running. For example, NetBeans IDE handles hooking up the event listener for you, we just need to make sure the window shows up. We have to make sure the window is visible because it starts initially as invisible. In this tutorial we will learn how to create a button in Swing application and how to tweak their appearance as per the requirement. This is the recommended way of adding image/icons to your buttons as this will reduce the chances of any ambiguities further.
