Please consider this Java code fragment:

Box buttonBox = Box.createHorizontalBox();
buttonBox.add(new JCheckBox("Select all"));
buttonBox.add(Box.createHorizontalGlue());
buttonBox.add(new JLabel("Filter: "));
buttonBox.add(new JTextField());

Box paneBox = Box.createVerticalBox();
paneBox.add(buttonBox);
paneBox.add(new JScrollPane(jList));

For some reason I don't get, the JTextField takes up most of the screen. The JList isn't even visible anymore. I would like to know why and how to fix it.

1. When I comment the line with the JTextField, it looks fine (except no JTextField, of course). Why does the JCheckBox and the JLabel not get ridiculously big? What is the purpose of a one-line JTextField being able to take up almost the whole screen?

2. Most people suggest to set the size of the JTextField field to my needs. However, I read that I should not call these methods, but let the LayoutManager take care of it. Now what is the most elegant solution to prevent the JTextField from becoming so big?