Why do stateful operations don't play well with parallel streams? - #javacoding #javatips

Stateful stream operations like limit and skip don't work well with parallel streams because they require shared state across multiple threads. For ordered streams, limit must return the first N elements in order, not just any N elements. Even for unordered streams, an internal counter must be synchronized across threads, adding overhead that negates parallelism benefits. Additionally, parallel streams consume all CPU cores, potentially slowing other processes. The advice: always measure performance rather than assuming parallel streams will be faster.