如何用java替换lambda

Question

是否可以将construct替换为lambda:

DMXFrame[] frames = new DMXFrame[universes.size()];
for (int i = 0; i < frames.length; i++) {
   frames[i] = universes.get(i).getDMXFrame();
}
return frames;

Answer 1

假设universes的类型为Collection<Universes>:

return universes.stream()
    .map(Universes::getDMXFrame)
    .toArray(DMXFrame[]::new)