org.cp.elements.beans.event.ChangeEvent Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of cp-elements Show documentation

Java Simplified. Extensions and Useful Constructs for the Java Platform. Codeprimate Elements (a.k.a. cp-elements) is a Java library and micro-framework used to simplify the development of software applications written in Java. Elements packages several APIs into one library in order to address various application concerns and aspects of software design and development collectively and conveniently. Elements is a highly simple, yet robust and proven library built on solid OO principles, software design patterns and best practices to effectively solve common and reoccurring problems in software development.

There is a newer version: 2.0.0-M1

Show newest version

/*
 * Copyright 2016 Author or Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.cp.elements.beans.event;

import java.util.Calendar;
import java.util.EventObject;

import org.cp.elements.lang.DateTimeUtils;

/**
 * The ChangeEvent class is an event signifying a state change in the source object referenced by this EventObject class.
 *
 * @author John J. Blum
 * @see java.util.EventObject
 * @since 1.0.0
 */
public class ChangeEvent extends EventObject {

  private final Calendar changeDateTime;

  /**
   * Creates an instance of the ChangeEvent class initialized with the specified object as the source for change events.
   *
   * @param source an Object reference as the source of the change events.
   */
  public ChangeEvent(final Object source) {
    super(source);
    changeDateTime = Calendar.getInstance();
  }

  /**
   * Gets the date and time that the change event on the source object occurred.
   *
   * @return a Calendar indicating the date and time of the change event.
   * @see java.util.Calendar
   */
  public Calendar getChangeDateTime() {
    return DateTimeUtils.clone(changeDateTime);
  }

}