更实用高效的代码编写-持续记录更新

java8的Collectors.joining(CharSequence delimiter, CharSequence prefix, CharSequence suffix)

// 定义人名数组
String[] names = {"jordan", "kobe", "curry", "durant", "james"};
Stream<String> stream = Stream.of(names);
// 拼接成 [x, y, z] 形式
String result1 = stream.collect(Collectors.joining(", ", "[", "]"));
// 拼接成 x | y | z 形式
String result2 = stream.collect(Collectors.joining(" | ", "", ""));
// 拼接成 (x -> y -> z) 形式
String result3 = stream.collect(Collectors.joining(" -> ", "(", ")"));