JTextArea is an (optionally editable) multi-line area that displays plain text. The JTextArea class implements the Scrollable interface, which enables it to be placed inside a charvax.swing.JScrollPane. In fact, in the CHARVA framework it should ALWAYS be used inside a JScrollPane, otherwise it will be unusable (its size depends on the text it contains).
Note that, unlike the javax.swing.JTextArea, pressing the TAB key while the keyboard focus is in the JTextArea will not cause a tab to be inserted; instead, it will move the keyboard input focus to the next focus-traversable component (if there is one). This is because (in javax.swing) the user can user can use the mouse to move the keyboard input focus away from the JTextArea, whereas CHARVA has no mouse support.