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Pi4J Java API & Runtime Library
There is a newer version: 2.7.0
package com.pi4j.wiringpi;

/*
 * #%L
 * **********************************************************************
 * ORGANIZATION  :  Pi4J
 * PROJECT       :  Pi4J :: Java Library (Core)
 * FILENAME      :  GpioInterruptEvent.java  
 * 
 * This file is part of the Pi4J project. More information about 
 * this project can be found here:  http://www.pi4j.com/
 * **********************************************************************
 * %%
 * Copyright (C) 2012 - 2015 Pi4J
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * .
 * #L%
 */


import java.util.EventObject;

/**
 *  This class provides the event object for GPIO interrupt state changes. 
 * 
 * 
 * Before using the Pi4J library, you need to ensure that the Java VM in configured with access to
 * the following system libraries:
 * 

 * pi4j
 * wiringPi
 * 
 *  This library depends on the wiringPi native system library.
 (developed by
 * Gordon Henderson @ http://wiringpi.com/)
 * 
 * 
 * 
 * @see http://www.pi4j.com/
 * @author Robert Savage (http://www.savagehomeautomation.com)
 */
public class GpioInterruptEvent extends EventObject {

    private static final long serialVersionUID = 1L;
    private int pin;
    private boolean state;

    /**
     * Default event constructor
     * 
     * @param obj Ignore this parameter
     * @param pin GPIO pin number (not header pin number; not wiringPi pin number)
     * @param state New GPIO pin state.
     */
    public GpioInterruptEvent(Object obj, int pin, boolean state) {
        super(obj);
        this.pin = pin;
        this.state = state;
    }

    /**
     * Get the pin number that changed and raised this event.
     * 
     * @return GPIO pin number (not header pin number; not wiringPi pin number)
     */
    public int getPin() {
        return pin;
    }

    /**
     * Get the new pin state raised in this event.
     * 
     * @return GPIO pin state (HIGH=true, LOW=false)
     */
    public boolean getState() {
        return state;
    }

    /**
     * Get the new pin state value raised in this event.
     * 
     * @return GPIO pin state (HIGH=1, LOW=0)
     */
    public int getStateValue() {
        return (state) ? 1 : 0;
    }
}