Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.util.OptionalDouble;
import java.util.stream.DoubleStream;

public class Main {
    public static void main(String[] args) {
        DoubleStream b = DoubleStream.of(1.1, 2.2, 3.3, 4.4, 5.5);
        OptionalDouble d = b.findFirst();
        if (d.isPresent()) {
            System.out.println(d.getAsDouble());
        } else {
            System.out.println("no data");
        }
    }
}