How is the fork/join framework better than a thread pool?

How is the fork/join framework better than a thread pool?

java fork-join

java

Why does parallel stream with lambda in static initializer cause a deadlock?

java java-8 deadlock java-stream fork-join

java

Java's Fork/Join vs ExecutorService - when to use which?

java multithreading concurrency executorservice fork-join

java

What determines the number of threads a Java ForkJoinPool creates?

java parallel-processing threadpool fork-join

java