Read the file inside the jar while running the jar package

In the development process, we often encounter reading the configuration file, for the configuration file read, depending on the circumstances, and so on, under normal circumstances, if the use of the relative/path from the jar package, relatively simple, not tired, and in many
case, we need to pack our class into a jar file and use it, and then we'll find that if we didn't take that into account, it might not work, so how do we solve it? Methods are as follows
：
There are the following paths:
Web-info--|-->classes--->jdbc.properties
|-->lib
At this point we need to read jdbc.properties, and when we do not use the jar package, we read it in the following ways:
File F = new file (This.getclass (). GetResource ("/"). GetPath ());
f = new File (F.getpath () + "/jdbc.properties");
Note: F.getpath () is the absolute path where class is located. such as: c:\javasrc\web-inf\classes
Then, the file object processing, you can read the configuration information, but add as the class is packaged into a jar file, then, when the program is executed here, will not be able to find the configuration file, then how to deal with it.

The processing method is as follows:

Properties Properties=new properties ();

InputStream is = current class name. Class.getclassloader (). getResourceAsStream ("jdbc.properties");

Properties.load (IS);

String Driver = Properties.getproperty ("Jdbc.driverclassname");