Section 12.20 JTextArea
• A JTextArea
(p. 539)—a subclass of JTextComponent
—may contain multiple lines of text.
• Class Box
(p. 540) is a subclass of Container
that uses a BoxLayout
layout manager (p. 541) to arrange the GUI components either horizontally or vertically.
• Box static
method createHorizontalBox
(p. 541) creates a Box
that arranges components from left to right in the order that they’re attached.
• Method getSelectedText
(p. 541) returns the selected text from a JTextArea
.
• You can set the horizontal and vertical scrollbar policies (p. 542) of a JScrollPane
when it’s constructed. JScrollPane
methods setHorizontalScrollBarPolicy
(p. 542) and setVertical ScrollBarPolicy
(p. 542) can be used to change the scrollbar policies at any ...
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