Java 8 Streams - Timeout?

Question

I want to loop over a huge array and do a complicated set of instructions that takes a long time. However, if more than 30 seconds have passed, I want it to give up.

ex.

Answer 1

Since Stream forEach doesn't have break, I think you can create Custom Exception for this to break the loop:

myDataStructure.stream()
    .forEach(e ->
    {
      if (System.currentTimeMillis() <= start + 30000) {
          throw new MyTimeOutException()
      }
    });

and you can catch this Exception for catch this.