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jsync.io is a non-blocking, event-driven networking framework for Java

There is a newer version: 1.10.13

/*
 * Copyright (c) 2011-2013 The original author or authors
 * ------------------------------------------------------
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Apache License v2.0 which accompanies this distribution.
 *
 *     The Eclipse Public License is available at
 *     http://www.eclipse.org/legal/epl-v10.html
 *
 *     The Apache License v2.0 is available at
 *     http://www.opensource.org/licenses/apache2.0.php
 *
 * You may elect to redistribute this code under either of these licenses.
 */

package io.jsync;

/**
 * Represents a result that may not have occurred yet.
 *
 * @author Tim Fox
 */
public interface AsyncResult {

    /**
     * The result of the operation. This will be null if the operation failed.
     */
    T result();

    /**
     * An exception describing failure. This will be null if the operation succeeded.
     */
    Throwable cause();

    /**
     * Did it succeed?
     */
    boolean succeeded();

    /**
     * Did it fail?
     */
    boolean failed();

}