NichtNullEintrags
NichtNullEintrags is a German term used in software engineering to describe an element of a collection, table, or data structure that is guaranteed to be non-null. The term is not tied to a single standard but is commonly used in German-language documentation to signal a contract: the value of the entry cannot be null at the point of use.
It is often used for map or list entries where a value is required for correct operation,
Implementation can be compile-time, via non-null types and annotations (@NonNull), or runtime, via explicit checks (requireNotNull,
Non-nullity is a contractual guarantee that may be violated by external input; it does not automatically imply