String index out of range!

[akanshSirohi]

java.lang.StringIndexOutOfBoundsException: String index out of range: -1
My code looks like this

String url=urls.get(options_list.getSelectionModel().getSelectedIndex());
String filename = file.getAbsolutePath();
DownloadManager downloadManager = DownloadManager.getInstance();
DownloadMission mission = new DownloadMission(url,"",filename);
downloadManager.addMission(mission);
downloadManager.start();

[deVDem]

You may have a problem on the first line of the attached code. Maybe the index is taken wrong

[themhassany]

java.lang.StringIndexOutOfBoundsException: String index out of range: -1
My code looks like this

String url=urls.get(options_list.getSelectionModel().getSelectedIndex());
String filename = file.getAbsolutePath();
DownloadManager downloadManager = DownloadManager.getInstance();
DownloadMission mission = new DownloadMission(url,"",filename);
downloadManager.addMission(mission);
downloadManager.start();

please include the complete exception. since it is not clear if the raised exception is even related to the library.