Streams 流

Java 8 has a nice stream and lambda syntax. You could write code like this:

Java 8有了一个非常漂亮的stream和lambda语法。你可以这样编码了：

final List<String> filtered = list.stream()
    .filter(s -> s.startsWith("s"))
    .map(s -> s.toUpperCase())
    .collect(Collectors.toList());

Instead of this:

而不是：

final List<String> filtered = new ArrayList<>();
for (String str : list) {
    if (str.startsWith("s") {
        filtered.add(str.toUpperCase());
    }
}

This allows you to write more fluent code, which is more readable.

这可以让你写出更加流畅的代码，而且更加可读。