Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8265446

JFileChooser slow with network shortcut on desktop

    XMLWordPrintable

    Details

      Description

      A DESCRIPTION OF THE PROBLEM :
      When you have a shortcut file (*.lnk) on the desktop that points to a location on a network server to which you must authenticate, the JFileChooser is very slow to open and change folders. This occurs in the same case as JDK-8213583 when you have a security manager set. Without a security manager set, changing directories is fast except when changing to the desktop.

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      1. Create a shortcut file on your desktop to a network server to which you need to authenticate. You'll know you have this setup correctly if you double click the shortcut and see a "Windows Security" dialog asking you to "Enter your credentials to connect to: <SERVERNAME>"
      2. Run the test case file with Java 11 or later

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      The file chooser opens quickly and changing directories is fast.
      ACTUAL -
      The file chooser takes a while to open and changing directories is very slow.

      ---------- BEGIN SOURCE ----------
      import java.io.*;
      import javax.swing.JFileChooser;

      /////////////////////////////////////
      //
      // NOTE:
      // There must be a shortcut on the Windows desktop referencing a network location
      // that requires authentication before running this program.
      //
      public class SlowLinkBug {
          public static void main(String[] args) throws Exception {

              // Creates a temporary security policy
              final File tempPolicyFile = File.createTempFile("broken-links-bug-", ".policy");
              tempPolicyFile.deleteOnExit();
              try (final PrintStream policyStream = new PrintStream(new FileOutputStream(tempPolicyFile))) {
                  policyStream.println("grant { permission java.security.AllPermission; };");
              }
              System.setProperty("java.security.policy", tempPolicyFile.getAbsolutePath());

              // Trigger the problem
              System.setSecurityManager(new SecurityManager());
              JFileChooser chooser = new JFileChooser();

              chooser.showDialog(null, "Open"); // not really needed
          }
      }

      ---------- END SOURCE ----------

      CUSTOMER SUBMITTED WORKAROUND :
      Remove the link from the desktop or don't set a security manager.

      FREQUENCY : always


        Attachments

          Issue Links

            Activity

              People

              Assignee:
              psadhukhan Prasanta Sadhukhan
              Reporter:
              webbuggrp Webbug Group
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

                Dates

                Created:
                Updated: