Repeat Stream allMatch() until true

Question

int testValue;
boolean success = false;

while(success == false) {
 testValue = generateRandomInt();   
 success = mySystem.getHosts().parallelStream().allMatch(predicate(testValue));
}

return testValue;

I am playing around with java8 streams. What do you suggest to make the code above more elegant/readable?

Answer 1

You can use an infinite IntStream instead of the while loop, and return the first int of the stream that matches your condition:

return IntStream.generate (() -> generateRandomInt())
                .filter (i -> mySystem.getHosts().parallelStream().allMatch(predicate(i)))
                .findFirst()
                .getAsInt();