jodd-core/src/main/java/jodd/util/PropertiesUtil.java
public static void resolveAllVariables(final Properties prop) {
		for (Object o : prop.keySet()) {
			String key = (String) o;
			String value = resolveProperty(prop, key);
			prop.setProperty(key, value);
		}
	}
public static void resolveAllVariables(final Properties prop) {
		for (Object o : prop.keySet()) {
			String key = (String) o;
			String value = resolveProperty(prop, key);
			prop.setProperty(key, value);
		}
	}
Resolves all variables.