Java 8中迭代带有索引的流(Stream)
示例
import java.util.stream.IntStream;
import java.util.*;
import java.util.concurrent.atomic.AtomicInteger;
public class Demo{
public static void main(String[] args){
String[] my_array = { "T", "h", "i", "s", "s","a", "m", "p", "l", "e" };
AtomicInteger my_index = new AtomicInteger();
System.out.println("字符串数组中的元素是:");
Arrays.stream(my_array).map(str -> my_index.getAndIncrement() + " -> " + str).forEach(System.out::println);
}
}输出结果
字符串数组中的元素是: 0 -> T 1 -> h 2 -> i 3 -> s 4 -> s 5 -> a 6 -> m 7 -> p 8 -> l 9 -> e