Get a human readable list of all modifiers on a given Method or Field

debug_modifiers.java

/*
  This isn't supposed to be pretty or ever be used in production code (don't even think about it), but has proven useful for quick debugging when working with reflections.
*/

// Example Method with some more interesting modifiers
Method meth = Arrays.stream(data.getClass().getDeclaredMethods()).filter(m -> "getChronology".equals(m.getName())).toArray()[0];

// Should return "isSynthetic, isPublic, isVolatile"
String modifiers = Arrays.stream(Modifier.class.getDeclaredMethods())
        .map(m -> {
            boolean isAccessible = m.isAccessible();
            try {
                m.setAccessible(true);
                if (m.getName().startsWith("is") && (Boolean) m.invoke(null, meth.getModifiers())) {
                    return m.getName();
                } else {
                    return null;
                }
            } catch (InvocationTargetException|IllegalAccessException e) {}
            m.setAccessible(isAccessible);
            return null;
        })
        .filter(Objects::nonNull)
        .collect(Collectors.joining(", "));