package ch.claude_martin.foo; import java.util.*; import java.util.stream.Stream; public class SomeClass { public static void main(String[] args) { final int[] v1 = { 3, 5 }; final int[] v2 = { 3, 6 }; final OptionalInt max = Stream.of(v1, v2).flatMapToInt(Arrays::stream).max(); if (max.isPresent()) System.out.println(max.getAsInt()); else System.out.println("No data"); } }