package com.winterbe.java8;
import java.util.Optional;
/**
* @author Benjamin Winterberg
*/
public class Optional2 {
static class Outer {
Nested nested;
}
static class Nested {
Inner inner;
}
static class Inner {
String foo;
}
public static void main(String[] args) {
test1();
}
private static void test1() {
Optional.of(new Outer())
.flatMap(o -> Optional.ofNullable(o.nested))
.flatMap(n -> Optional.ofNullable(n.inner))
.flatMap(i -> Optional.ofNullable(i.foo))
.ifPresent(System.out::println);
}
}