4719 Common patchset for jdk1.7 support preparation

@@ -489,11 +489,11 @@
                 DateTimeDialog.this.setMidnight();
             }
             else
                if (e.getSource() == help) {
                 if (hd != null)
-                  hd.show();
+                  hd.setVisible(true);
                 else {
                   hd = new
                     HelpDialog(DateTimeDialog.this.parent,
                         getString("Help for Date and Time Dialog"), false);
                   hd.setVisible(true);