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java ( 1794185 ) - com.iluwatar.br ( 1794237 ) stack: com.iluwatar.bridge.App.main(App.java:50) org.codehaus.mojo.exec.ExecJavaMojo.doMain(ExecJavaMojo.java:385) org.codehaus.mojo.exec.ExecJavaMojo.doExec(ExecJavaMojo.java:374) org.codehaus.mojo.exec.ExecJavaMojo.lambda$execute$0(ExecJavaMojo.java:296) java.base/java.lang.Thread.run(Thread.java:840)
/*
 * This project is licensed under the MIT license. Module model-view-viewmodel is using ZK framework licensed under LGPL (see lgpl-3.0.txt).
 *
 * The MIT License
 * Copyright © 2014-2022 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.bridge;

import lombok.extern.slf4j.Slf4j;

/**
 * Composition over inheritance. The Bridge pattern can also be thought of as two layers of
 * abstraction. With Bridge, you can decouple an abstraction from its implementation so that the two
 * can vary independently.
 *
 * <p>In Bridge pattern both abstraction ({@link Weapon}) and implementation ( {@link Enchantment})
 * have their own class hierarchies. The interface of the implementations can be changed without
 * affecting the clients.
 *
 * <p>In this example we have two class hierarchies. One of weapons and another one of
 * enchantments. We can easily combine any weapon with any enchantment using composition instead of
 * creating deep class hierarchy.
 */
@Slf4j
public class App {

  /**
   * Program entry point.
   *
   * @param args command line args
   */
  public static void main(String[] args) {
    LOGGER.info("The knight receives an enchanted sword.");
    var enchantedSword = new Sword(new SoulEatingEnchantment());
    enchantedSword.wield();
    enchantedSword.swing();
    enchantedSword.unwield();

    LOGGER.info("The valkyrie receives an enchanted hammer.");
    var hammer = new Hammer(new FlyingEnchantment());
    hammer.wield();
    hammer.swing();
    hammer.unwield();
  }
}
Variables All
No.FromNameValue
1class@50LOGGERLogger[com.iluwatar.bridge.App]
250args[Ljava.lang.String;@6851852f
END 0 00
Output All Filter Merge
Process FilterThread Filter
1794185 java 1794237 com.iluwatar.br
No.PNPIDTIDTNTLMessage
1java17941851794237com.iluwatar.brcom.iluwatar.bridge.AppIThe knight receives an enchanted sword.
2java17941851794237com.iluwatar.brcom.iluwatar.bridge.SwordIThe sword is wielded.
3java17941851794237com.iluwatar.brcom.iluwatar.bridge.SoulEatingEnchantmentIThe item spreads bloodlust.
4java17941851794237com.iluwatar.brcom.iluwatar.bridge.SwordIThe sword is swung.
5java17941851794237com.iluwatar.brcom.iluwatar.bridge.SoulEatingEnchantmentIThe item eats the soul of enemies.
6java17941851794237com.iluwatar.brcom.iluwatar.bridge.SwordIThe sword is unwielded.
7java17941851794237com.iluwatar.brcom.iluwatar.bridge.SoulEatingEnchantmentIBloodlust slowly disappears.
8java17941851794237com.iluwatar.brcom.iluwatar.bridge.AppIThe valkyrie receives an enchanted hammer.
9java17941851794237com.iluwatar.brcom.iluwatar.bridge.HammerIThe hammer is wielded.
10java17941851794237com.iluwatar.brcom.iluwatar.bridge.FlyingEnchantmentIThe item begins to glow faintly.
11java17941851794237com.iluwatar.brcom.iluwatar.bridge.HammerIThe hammer is swung.
12java17941851794237com.iluwatar.brcom.iluwatar.bridge.FlyingEnchantmentIThe item flies and strikes the enemies finally returning to owner's hand.
13java17941851794237com.iluwatar.brcom.iluwatar.bridge.HammerIThe hammer is unwielded.
14java17941851794237com.iluwatar.brcom.iluwatar.bridge.FlyingEnchantmentIThe item's glow fades.
END 0 0 0 0 0 00
Project:JavaDesignPatterns
Update:20240509
Commit:bf6456ba6
Source Code:bridge
BuildTool:Java17
Compiler:Java17
Runtime:Openjdk17
System:MySystemD
Kernel:Linux5.10.211
Cpu:Intel:Corei7-7700K
Machine:AwesomeMachine