Scroll text area to top after it has been filled

Question

I have a few text areas that are filled with loops of information. Is it possible to make it 'jump' or scroll back to the top automatically after the loop has completed, so that the user sees it from the start and not the end?

Possible duplicate: http://stackoverflow.com/questions/291115/java-swing-using-jscrollpane-and-having-it-scroll-back-to-top — Alexandre, Jan 31 '12 at 13:26
Are you referring to an AWT based `TextArea` or a Swing based `JTextArea`? Please be specific. — Andrew Thompson, Jan 31 '12 at 13:27
Why are you using AWT components in this millennium? The few people that did use them have largely forgotten how! — Andrew Thompson, Jan 31 '12 at 13:52
I'm only using the AWT TextArea as I don't like the way Swing displays without a border, all my other components are Swing! — Mark Tickner, Jan 31 '12 at 16:20

score 6 · Answer 1 · edited Jan 06 '13 at 16:16

6

You can use setCaretPosition() to set the cursor at position 0 of the TextArea. That usually works for me.

edited Jan 06 '13 at 16:16

tckmn

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answered Jan 06 '13 at 15:53

Magnus

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score 0 · Answer 2 · answered Mar 13 '22 at 15:19

Use setUpdatePolicy with NEVER_UPDATE, and make sure the setUpdatePolicy comes before setting any text to the JTextArea. In my example I initialize a JTextArea without any text and call setUpdatePolicy right after.

JTextArea jTextArea = new JTextArea();
((DefaultCaret)jTextArea.getCaret()).setUpdatePolicy(DefaultCaret.NEVER_UPDATE);

score -2 · Accepted Answer · answered Jan 31 '12 at 22:17

-2

I have solved this problem by creating a new TextArea which acts as a sort of buffer (and isn't displayed). The loop writes to this area and when completed gets the text from that and sets it to the required TextArea.

answered Jan 31 '12 at 22:17

Mark Tickner

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Scroll text area to top after it has been filled

3 Answers3