jodd-core/src/main/java/jodd/util/ClassLoaderUtil.java
public static InputStream getResourceAsStream(final String resourceName, final ClassLoader callingClass) throws IOException {
		URL url = getResourceUrl(resourceName, callingClass);
		if (url != null) {
			return url.openStream();
		}
		return null;
	}
public static InputStream getResourceAsStream(final String resourceName, final ClassLoader callingClass) throws IOException {
		URL url = getResourceUrl(resourceName, callingClass);
		if (url != null) {
			return url.openStream();
		}
		return null;
	}
Opens a resource of the specified name for reading.
@see #getResourceUrl(String, ClassLoader)