test chars.

Signed-off-by: Flycoding <Flycoding@yeah.net>
test NIO(list,walk,find,lines and so on).

Signed-off-by: Flycoding <Flycoding@yeah.net>
test java.util.stream.Stream.toArray(IntFunction<Integer[]>).

Signed-off-by: Flycoding <Flycoding@yeah.net>
test anyMatch,summaryStatistics,distinct,limit,skip,sorted and so on.

Signed-off-by: Flycoding <Flycoding@yeah.net>