假设以下是String数组,我们已将其转换为List-
Arrays.asList("DE", "GH", "JK", "MN", "PQ", "RS", "TU", "VW", "XY", "BC")
现在过滤字符串流并映射为小写-
.stream() .filter(a-> a.startsWith("V")) .map(String::toLowerCase)
要立即排序,请使用,sorted()
然后使用显示forEach()
。
以下是过滤字符串流并映射为小写字母的示例-
import java.util.Arrays; public class Demo { public static void main(String[] args) throws Exception { Arrays.asList("DE", "GH", "JK", "MN", "PQ", "RS", "TU", "VW", "XY", "BC") .stream() .filter(a-> a.startsWith("V")) .map(String::toLowerCase) .sorted() .forEach(System.out::println); } }
输出结果
Vw