Java All-in-One For Dummies, 6th Edition

Chapter 5

Getting Input from the User

IN THIS CHAPTER

Working with text fields and areas

Validating numeric data

Creating check boxes

Setting radio buttons

In the first four chapters of this minibook, I discuss how to create JavaFX programs using only two basic JavaFX input controls: labels and buttons. If all you ever want to write are programs that display text when the user clicks a button, you can put the book down now. But if you want to write programs that actually do something worthwhile, you need to use other JavaFX input controls.

In this chapter, you find out how to use some of the most common JavaFX controls. First, you read about the label and controls that get information from the user. You find out more details about the text field control, which gets a line of text, and the text area control, which gets multiple lines. Then I move on to two input controls that get either/or information from the user: radio buttons and check boxes.

Along the way, you discover an important aspect of any JavaFX program that collects input data from the user: data validation. Data validation ...