/*
 * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */

@FunctionalInterface
interface MyInterface {
    public String sayHello();
}

class MyClass implements MyInterface {
    public String sayHello() {
        return "Hello";
    }
}

public class SimpleApp {
    public static boolean useLambda;

    public static void main(String args[]) {
        useLambda = (args.length == 1 && args[0].equals("lambda")) ? true : false;
        if (!useLambda) {
            MyClass mc = new MyClass();
            System.out.println(mc.sayHello());
        } else {
            MyInterface msg = () -> {
                return "Hello";
            };
            System.out.println(msg.sayHello());
        }
    }
}