It's so beautiful

magic.java

public static StackTraceElement getCallingClass() {
	Class c = new Object(){}.getClass().getEnclosingClass();
	String q = Arrays.stream(new Object(){}.getClass().getEnclosingClass().getName().split("\\."))
        	.limit(2)
        	.collect(Collectors.joining("."));
	return Arrays.stream(Thread.currentThread().getStackTrace())
			.filter((s) -> s.toString().startsWith(q) && !s.toString().startsWith(c.getName()))
        	.collect(Collectors.toList())
			.get(0);
}