File Chooser Shortcut Panel folders under on JDK 9

Summary

New API method was added to query shortcut panel entries for JFileChooser, since ShellFolder is internal class which is not publicly accessible.

Problem

ShellFolder is an internal class, and customers do not currently have a way of querying the default shortcut files on Windows, without exporting this class at compile time.

Solution

Solution is to add a new api in javax.swing.filechooser.FileSystemView.java, which can be directly used.

Specification

Signatures of the api being added and the one for which the documentation is being updated in that order:

    /**
     * Returns an array of files representing the values which will be 
     * shown in the file chooser shortcuts panel.
     *
     * @return an array of {@code File} objects. The array returned may be possibly empty
     * if there are no appropriate permissions.
     * @since 12
     */
    final public File[] getChooserShortcutPanelFiles() 


    /**

	
Returns an array of files representing the values which will be shown
	
in the file chooser selector

     *
	
@return an array of 
{@code File}
 objects. The array returned may be
	
possibly empty if there are no appropriate permissions.
	
@since 9

     */

    public File[]

 getChooserComboBoxFiles()