What package are the Labe$1,$ Button, and TextFie$1$d classes in$?$

What two classes do you use to display an image?

What is an image's aspect ratio? How do you make sure it is preserved when you resi an image?

Which layout container arranges controls in a horizontal row? Which layout contair arranges controls in a vertical row? Which layout container arranges controls in ro and columns?

How do you retrieve the text that the user has entered into a TextField control?

Describe three different techniques discussed in this chapter for writing event handl

Which layout container divides a container into regions known as top, bottom, center, and right?