What is "jtextarea"

Jtextarea is a multi-line text component that displays plain text. It is intended to be a lightweight component that provides source compatibility with the class java.awt.Textarea where it can reasonably be done.

This component can display multiple lines of editable text. Although a text area can display text in any font, all text will always be in the same font. Use a text area to allow the user to insert unformatted text of any length or to display unformatted help information.

References:

Using Text Components