Scrolling panes

A new class called JScrollPane manages almost all aspects of a scrollable view.

This is a convenient component that makes managing on many aspects of scrolling easy:

• There is no need to determine drawing rectangles,
• it is not necessary to intercept window movement events.
• Scrollbars can be either horizontal or vertical.
• The presence of the scroll bars can be controlled either programmatically or automatically (depending on the size of the window).

The most important point to make with an application utilizing a scrolling view is that:

• The developer is responsible only for populating the pane.
• After this, Swing manages all of the movement, repainting, and resize activities associated with the pane.

GUI Guideline

Favor vertical scrolling over horizontal scrolling in panes.

• Users tend not to enjoy scrolling, but when users are forced into a scrolling situation, they almost always scroll downward first rather than toward the right.
• Initially, place the object being scrolled at the top-left most position, and then, place more viewable information in a vertical path downward.