How get file path from property file and pass into the method as arguments

How get file path from property file and pass into the method as arguments

In Property file :
**FolderPath**=C:\\pre-configured/Import.csv
In Main class im passing this path as argument for a method load
Properties pro = new Properties();
new CSV().load(con,"**pro.FolderPath**", "VALIDATION");
but it is giving error as "pro.getProperty(FolderPath) (The system cannot
find the file specified.)" . Please help in passing this path into the
method as argument ?