Java 8 Streams Java
Following example shows how to find first and last element of a Java 8 stream:
package com.logicbig.example; import java.util.Arrays; import java.util.Collection; public class FirstLastElement { public static void main(String[] args) { Collection<String> fruits = Arrays.asList("apple", "banana", "pie", "pineapple", "apricots"); String firstElement = fruits.stream() .findFirst() .orElse(null); String lastElement = fruits.stream().skip(fruits.size() - 1) .reduce((first, second) -> second) .orElse(null); System.out.println("First: " + firstElement); System.out.println("Last: " + lastElement); } }
First: appleLast: apricots