Java's position on the issue to load configuration file

1、ReadSurce.class.getClassLoader().getResourceAsStream("data.properties");

Profile data.properties, under src directory, by the class loader, loading files. When a file is labeled jar package, the method is preferably used.

2、ReadSurce.class.getResourceAsStream("data2.properties");

Configuration file in the package directory ReadSurce this class, that is resurce this package below.

3. Compare

ReadSurce.class.getClassLoader().getResourceAsStream("data.properties"); ReadSurce.class.getResourceAsStream("data2.properties");