It was complicated because it could be converted directly by the instance method, it was prepared by the class method, and it needed more complicated things, so I will summarize it.
| from ＼ to | T[] |
List<T> |
Stream<T> |
|---|---|---|---|
T[] array |
Arrays.copyOf(array, array.length) |
Arrays.asList(array)(Fixed length / interlocking with array) |
Arrays.stream(array)Stream.of(array) |
List<T> list |
list.toArray(new T[0]) |
new ArrayList<>(list)Collections.unmodifiableList(list)(Cannot be changed) |
list.stream()list.parallelStream()(Parallel) |
Stream<T> stream |
stream.toArray(T[]::new) |
stream.collect(Collectors.toList()) |
* Cannot be copied, reassemble from the data source |
document:
Stream # collect () Argument generationOthers:
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