ShutdownHook.java

/*
 * Copyright (c) 2010 SimpleServer authors (see CONTRIBUTORS)
 *
 * 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 simpleserver.minecraft;

public class ShutdownHook implements Wrapper {
  private final MinecraftWrapper minecraft;
  private final Hook hook;

  public ShutdownHook(MinecraftWrapper minecraft) {
    this.minecraft = minecraft;

    hook = new Hook();
    Runtime.getRuntime().addShutdownHook(hook);
  }

  public void stop() {
    Runtime.getRuntime().removeShutdownHook(hook);
  }

  public void join() {
  }

  private final class Hook extends Thread {
    @Override
    public void run() {
      System.out.println("Shutdown Hook Activated");
      minecraft.execute("stop", null);
    }
  }
}