Skip to Content
Java Swing, 2nd Edition
book

Java Swing, 2nd Edition

by Marc Loy, Robert Eckstein, Dave Wood, James Elliott, Brian Cole
November 2002
Intermediate to advanced
1280 pages
38h 26m
English
O'Reilly Media, Inc.
Content preview from Java Swing, 2nd Edition

The JScrollBar Class

JScrollBar is the Swing implementation of a scrollbar. The JScrollBar class is shown in various L&Fs in Figure 6-3.

Scrollbars in several L&Fs

Figure 6-3. Scrollbars in several L&Fs

To program with a scrollbar, it is important to understand its anatomy. Scrollbars are composed of a rectangular tab, called a slider or thumb , located between two arrow buttons. The arrow buttons on either end increment or decrement the slider’s position by an adjustable number of units, generally one. In addition, clicking in the area between the thumb and the end buttons (often called the paging area) moves the slider one block, or 10 units by default. The user can modify the value of the scrollbar in one of three ways: by dragging the thumb in either direction, by pushing on either of the arrow buttons, or by clicking in the paging area.

Scrollbars can have one of two orientations: horizontal or vertical. Figure 6-4 provides an illustration of a horizontal scrollbar. JScrollBar uses the bounded-range model to represent the scrollbar’s data. The assignment of each bounded-range property is also shown in Figure 6-5. The minimum and maximum of the scrollbar fall on the interior edges of the arrow buttons. The scrollbar’s value is defined as the left (or top) edge of the slider. Finally, the extent of the scrollbar defines the width of the thumb in relation to the total range. (The older Adjustable interface ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.

Read now

Unlock full access

More than 5,000 organizations count on O’Reilly

AirBnbBlueOriginElectronic ArtsHomeDepotNasdaqRakutenTata Consultancy Services

QuotationMarkO’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.
Julian F.
Head of Cybersecurity
QuotationMarkI wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.
Addison B.
Field Engineer
QuotationMarkI’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.
Amir M.
Data Platform Tech Lead
QuotationMarkI'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Mark W.
Embedded Software Engineer

You might also like

Java Projects - Second Edition

Java Projects - Second Edition

Peter Verhas
Java Threads, 3rd Edition

Java Threads, 3rd Edition

Scott Oaks, Henry Wong

Publisher Resources

ISBN: 0596004087Errata Page