Bug 121546 Cannot validate Javadoc URL starting with https
3.2 M4 On the Javadoc location properties page is possible to define a Javadoc URL. There is also a button to validate the specified location. If the URL starts with https a message pops up saying "Unable to validate location". Is this by design or is https not supported?
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/JavadocConfigurationBlock.java
for (int i= 0; i < length; i++) {
			char ch= str.charAt(i);
			if (ch == '%' && (i < length - 2) && str.charAt(i + 1) == '2' && str.charAt(i + 2) == '1') {
				buf.append('!');
				i+= 2;
			} else {
				buf.append(ch);
			}
		}
		return buf.toString();
	}
	
		
	private String internalChooseArchivePath() {		
		ZipFile zipFile= null;
		try {
			zipFile= new ZipFile(fArchiveField.getText());
			ZipFileStructureProvider provider= new ZipFileStructureProvider(zipFile);
			
			ILabelProvider lp= new ZipDialogLabelProvider(provider);
			ZipDialogContentProvider cp= new ZipDialogContentProvider(provider);
			ViewerSorter sorter= new ViewerSorter();
						
			ElementTreeSelectionDialog dialog= new ElementTreeSelectionDialog(fShell, lp, cp);
			dialog.setAllowMultiple(false);
			dialog.setValidator(new ZipDialogValidator());
			dialog.setTitle(PreferencesMessages.JavadocConfigurationBlock_browse_jarorzip_path_title); 
			dialog.setMessage(PreferencesMessages.JavadocConfigurationBlock_location_in_jarorzip_message); 
			dialog.setSorter(sorter);