This is my code:
JTextArea textArea = new JTextArea(15, 20);
JScrollPane s = new JScrollPane(textArea,JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
And I'm adding the text area:
add(textArea);
Add the JScrollPane
and not the JTextArea
to your container:
add(s);