Re: What is java.vm.version 14.1-b02?

markspace wrote:


Before I send this off to Sun with a bug report, could some else check
to see if they can reproduce the problem? I'm getting thin blue lines
in the left hand margin, next to the grey border, when the JTextArea is
scrolled. On my system, this requires the JRE to see (which is the
version mentioned above). If I use the JDK version of the java command,
the blue lines don't appear.

package scrolltest;

import java.awt.Color;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;
import javax.swing.border.MatteBorder;

/** This short program creates artifacts on the screen when used with
  * Java version 14.1-b0 (that's JRE runtime 1.6.0_15-b03). It does not
  * create artifact when used with my JDK runtime, version 1.6.0-b105
  * (which is runtime 1.6.0-b105). Windows Vista Ultimate, SP 2.
  *
  * The artifacts are one pixel blue lines in the left-hand margin, next
  * to the grey border. To make them appear, move the scroll bar thumb
  * up and down quickly. Once or twice is all it should take.
  *
  * @author markspace @ live dot com
  */
public class ScrollTest {

     private static final String LOREM_IPSUM =
     "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed "+
     "do eiusmod tempor incididunt ut labore et dolore magna aliqua. "+
     "Ut enim ad minim veniam, quis nostrud exercitation ullamco "+
      "laboris nisi ut aliquip ex ea commodo consequat.\n\n\n";

     private static final int REPEAT_TEXT = 75;

     /** Run this to see Java runtime bugs */
     public static void main(String[] args) {
         System.getProperties().list(System.out);

         SwingUtilities.invokeLater( new Runnable() {
             public void run() {
                 createAndShowGui();
             }
         } );
     }

     private static void createAndShowGui() {
         JFrame frame = new JFrame("Scroll Test");
         JTextArea text = new JTextArea( 30, 50 );
         for( int i = 0; i < REPEAT_TEXT; i++ ){
             text.append( LOREM_IPSUM );
         }
         text.setLineWrap( true );
         text.setWrapStyleWord( true );
         text.setEditable( false );
         text.setCaretPosition( 0 );
         text.getPreferredScrollableViewportSize();
         JScrollPane scrollPane = new JScrollPane( text );
         scrollPane.setHorizontalScrollBarPolicy(
                 JScrollPane.HORIZONTAL_SCROLLBAR_NEVER );
         scrollPane.setViewportBorder( new MatteBorder( 10, 10, 10, 10,
                 new Color( 224, 224, 224) ) );
         JPanel panel = new JPanel();
         panel.add( scrollPane );
         frame.add( panel );

         frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
         frame.pack();
         frame.setLocationRelativeTo( null );
         frame.setVisible( true );
     }

}