请参考源码：
private static <T extends AccessibleObject & Member> void validateMember(T object) {
int modifiers = object.getModifiers();
if ((modifiers & (PRIVATE | STATIC)) != 0) {
throw new IllegalStateException(object.getDeclaringClass().getName()
+ "."
+ object.getName()
+ " must not be private or static");
}
if ((modifiers & PUBLIC) == 0) {
object.setAccessible(true);
}
}
