`Long` is a boxed (reference) type, but small numbers are interned so you get the same reference when boxing a primitive value. Larger numbers aren't interned,

`Long` is a boxed (reference) type, but small numbers are interned so you get the same reference when boxing a primitive value. Larger numbers aren't interned, so you get fresh boxes. https://stackoverflow.com/questions/1700081/why-is-128-128-false-but-127-127-is-true-when-comparing-integer-wrappers-in-ja https://stackoverflow.com/questions/1700081/why-is-128-128-f...