package com.iluwatar.resource.acquisition.is.initialization;

/**
 * 
 * Resource Acquisition Is Initialization pattern was developed for exception safe resource
 * management by C++ creator Bjarne Stroustrup.
 * <p>
 * In RAII resource is tied to object lifetime: resource allocation is done during object creation
 * while resource deallocation is done during object destruction.
 * <p>
 * In Java RAII is achieved with try-with-resources statement and interfaces {@link Closeable} and
 * {@link AutoCloseable}. The try-with-resources statement ensures that each resource is closed at
 * the end of the statement. Any object that implements {@link java.lang.AutoCloseable}, which
 * includes all objects which implement {@link java.io.Closeable}, can be used as a resource.
 *
 * In this example, {@link SlidingDoor} implements {@link AutoCloseable} and {@link TreasureChest}
 * implements {@link Closeable}. Running the example, we can observe that both resources are
 * automatically closed.
 * <p>
 * http://docs.oracle.com/javase/7/docs/technotes/guides/language/try-with-resources.html
 *
 */
public class App {

  /**
   * Program entry point
   */
  public static void main(String[] args) throws Exception {

    try (SlidingDoor slidingDoor = new SlidingDoor()) {
      System.out.println("Walking in.");
    }

    try (TreasureChest treasureChest = new TreasureChest()) {
      System.out.println("Looting contents.");
    }
  }
}
