review

Advantage of using binary io instead of text io? === Numbers are all stored as the same size, regular text needs to encode and decode. No overhead Converting

Can objects be read to and from files? === Yes. Objects - write and read to file - binary

ComboBox vs Listview? === You can only select one object in a combobox, but you can select one or more in a listview.

Checkbox Vs RadioButtons? === You can select one or more options with checkbox, but only one with radiobuttons.

Textfield vs TextArea? === Textfield is one line, textarea is many lines.

Slider in place of TextField?  === No need to validate input.

***Layout managers, but not in depth, be able to use. Know how to use event handlers.