60 lines
2.3 KiB
Java
60 lines
2.3 KiB
Java
/**
|
|
* The MIT License
|
|
* Copyright (c) 2014-2016 Ilkka Seppälä
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
package com.iluwatar.composite;
|
|
|
|
import org.slf4j.Logger;
|
|
import org.slf4j.LoggerFactory;
|
|
|
|
/**
|
|
* The Composite pattern is a partitioning design pattern. The Composite pattern describes that a
|
|
* group of objects is to be treated in the same way as a single instance of an object. The intent
|
|
* of a composite is to "compose" objects into tree structures to represent part-whole hierarchies.
|
|
* Implementing the Composite pattern lets clients treat individual objects and compositions
|
|
* uniformly.
|
|
* <p>
|
|
* In this example we have sentences composed of words composed of letters. All of the objects can
|
|
* be treated through the same interface ({@link LetterComposite}).
|
|
*
|
|
*/
|
|
public class App {
|
|
|
|
private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
|
|
|
|
/**
|
|
* Program entry point
|
|
*
|
|
* @param args command line args
|
|
*/
|
|
public static void main(String[] args) {
|
|
LOGGER.info("Message from the orcs: ");
|
|
|
|
LetterComposite orcMessage = new Messenger().messageFromOrcs();
|
|
orcMessage.print();
|
|
|
|
LOGGER.info("\nMessage from the elves: ");
|
|
|
|
LetterComposite elfMessage = new Messenger().messageFromElves();
|
|
elfMessage.print();
|
|
}
|
|
}
|