jodd-core/src/main/java/jodd/util/PropertiesUtil.java
public static void loadFromFile(final Properties p, final String fileName) throws IOException {
		loadFromFile(p, new File(fileName));
	}
public static void loadFromFile(final Properties p, final String fileName) throws IOException {
		loadFromFile(p, new File(fileName));
	}
Loads properties from the file. Properties are appended to the existing
properties object.

@param p        properties to fill in
@param fileName properties file name to load