android - Can someone please explain this code snippet -

when try open web browser (from home in kindle fire hd) , plain fails launch. checked device logs , find below exception:

android.database.sqlite.sqliteexception: can't upgrade read-only database version 29 27

i googled exception , find following code snippet throwing exception. 1 please explain this. , need this

try {              misinitializing = true;              string path = mcontext.getdatabasepath(mname).getpath();              db = sqlitedatabase.opendatabase(path, mfactory, sqlitedatabase.open_readonly,                      merrorhandler);              if (db.getversion() != mnewversion) {                  throw new sqliteexception("can't upgrade read-only database version " +                          db.getversion() + " " + mnewversion + ": " + path);              } 

private final int mnewversion;

public sqliteopenhelper(context context, string name, cursorfactory factory, int version, databaseerrorhandler errorhandler) { if (version < 1) throw new illegalargumentexception("version must >= 1, " + version); if (errorhandler == null) { throw new illegalargumentexception("databaseerrorhandler param value can't null."); }

          mcontext = context;           mname = name;           mfactory = factory;           mnewversion = version;           merrorhandler = errorhandler;      }