Java stream generate and limit significance

Asked Dec 28 '17 at 19:55

Active Dec 28 '17 at 22:57

Viewed 63 times

For the following pieces of code:

Block 1:

Stream.generate(() -> "abcd")
.filter(n -> n.length() == 4)
.limit(2)
.sorted()
.forEach(System.out::println);

Block 2:

Stream.generate(() -> "abc")
.filter(n -> n.length() == 4)
.limit(2)
.sorted()
.forEach(System.out::println);

I am trying to understand streams.

How does stream work internally? Does it always filter after producing one element ? Does limit also get fired after each element is generated ?

edited Dec 28 '17 at 22:57

Stefan Zobel

asked Dec 28 '17 at 19:55

Adithya

2

Java streams are *lazy*. See https://docs.oracle.com/javase/8/docs/api/java/util/stream/package-summary.html#StreamOps – Oliver Charlesworth Dec 28 '17 at 20:00
you do realize that the second one will never finish right? – Eugene Dec 28 '17 at 20:44
@Eugene just the second snippet. – Ousmane D. Dec 28 '17 at 20:46
1

@Aominè ah! my bad – Eugene Dec 28 '17 at 20:47

0 Answers0