I am curious about how Java actually goes about creating a JFrame in swing; how does a window magically pop up? So, I went ahead and looked at the source code for the JFrame and ended up at the source code for the Window class.
In the Window class, there’s so much going on I can’t tell what hints at the initialization of a displayed window. I am a beginner, and even if it’s really high level stuff, I still want to be to see the actual code for making a window.
Maybe I’m looking at the wrong stuff. If someone could point me in the right direction or provide links, that would be great.
EDIT:
If anyone is confused by what I’m trying to ask, say you were to create a window just like a JFrame but from scratch, how would it be done? How is it done in swing?
Window (or more formally java.awt.Window) is a Java API to the platform native toolkit window. All modern OSes (that support display anyway) come with a toolkit.
JFrame and Swing were a secondary attempt at providing a user interface (UI) toolkit in Java that would look and work the same way over multiple OSes. The classes in java.awt like Frame and Dialog were the first attempt, but they had native peer classes (see java.awt.peer - compiled C/C++ code), and rendered and performed very differently across different OSes.
So what is going on under the hood is that JFrame is first creating the most basic window possible from the OS toolkit, and then dressing it up (adding menu bars, scroll bars, etc) to be a JFrame or a JDialog within the swing Java classes themselves.