Buttons have a label and a callback.
To create a simple button, with no callback:
Button button = new Button("Enter");
You can also create a button with a callback:
Button button = new Button("Enter", new Runnable() {
@Override
public void run() {
// Actions go here
}
});
As you can see, the callback runs in its own thread.
Pressing the Enter key on the keyboard when the button is highlighted will trigger the callback.
