Java Swing - Using JScrollPane and Having it scroll back to top

Question

I\'m using JScrollPane to allow scrolling in a JFrame that has a text component that\'s serving as a text editor. What I want to do, after setting the text in this editor,

Answer 1

You can try this:

 scrollPane.getViewport().setViewPosition(new Point(0,0));

According to the JavaDocs setViewPosition() behaves like this:

Sets the view coordinates that appear in the upper left hand corner of the viewport, does nothing if there's no view.

Answer 2

Just in case you are not using a text component take a look at the thread posted here.... Setting Scroll Bar on a JScrollPane

Their solution is to spin off a thread via invokeLater

final JScrollPane scroll = new JScrollPane(text);
javax.swing.SwingUtilities.invokeLater(new Runnable() {
   public void run() { 
       scroll.getVerticalScrollBar().setValue(0);
   }
});

Answer 3

This will make the work:

DefaultCaret caret = (DefaultCaret) textArea.getCaret();
caret.setUpdatePolicy(DefaultCaret.NEVER_UPDATE);

Answer 4

Calling setCaretPosition(0) on your text component will cause it to scroll to the top.

Answer 5

You can use the method setCaretPosition(0) just after setText(String t) of your text component.

Answer 6

Here's how:

textArea.setSelectionStart(0);
textArea.setSelectionEnd(0);