jodd-core/src/main/java/jodd/util/PropertiesUtil.java
public static void loadFromFile(final Properties p, final File file) throws IOException {
		FileInputStream fis = null;
		try {
			fis = new FileInputStream(file);
			p.load(fis);
		} finally {
			StreamUtil.close(fis);
		}
	}
public static void loadFromFile(final Properties p, final File file) throws IOException {
		FileInputStream fis = null;
		try {
			fis = new FileInputStream(file);
			p.load(fis);
		} finally {
			StreamUtil.close(fis);
		}
	}
Loads properties from the file. Properties are appended to the existing
properties object.

@param p      properties to fill in
@param file   file to read properties from