Java Streams Intermediate Operations map() and mapToInt()

This video provides an in-depth explanation of two intermediate operations in Java Streams: map() and mapToInt(). Both are applicable to sequential and parallel streams and are stateless "run-to-completion" operations. map() applies a mapper function to each element in an input stream, producing an output stream. mapToInt() works similarly but returns an IntStream to optimize performance by reducing boxing overhead. Practical examples from the SimpleSearchStream case study are given to show how map() transforms a stream of search words into search results and mapToInt() converts a stream of results into primitive indices. The map*() family of intermediate operations are crucial for data manipulation in Java Streams programming.