Can't load sql file from inside jar file?

Question

hi all
i have a sql file inside my jar file
and i want to get the path of the sql file to use it in runtime command to restore a sql dump file
i used the following but it doesn't work:
the path contains invalid characters such %20% instead of and?
URL url2=getClass().getResource("backup.sql");
String str1=url2.toString().substring(10);
String command="cmd.exe /c  c:\\wamp\\mysql\\bin\\mysql -u root --password=anasa library < "+str1;       
Runtime.getRuntime().exec(command);is this way is wrong?
or there's an alternative way?

Answer 1

How is the system to pull the data out of the jarfile?
That redirection symbol means to take the information from the file, or here document, or command output that comes after it, but you don't have any of those. It will read that String as if it is a file name, but a file under that name doesn't exist. And, after you've changed it like you have, it doesn't even reference anything inside of a jar file anymore (not that the command could have used that anyway).
If you insist on doing something like this, then you are going to need to read it with getInputStream and write it out somewhere (probably to a temp file) then use that tempfile and delete it when you're done.