applicationid.java

来自「主要是对串口驱动的的一些控制源码！！！ 在下载javacomm20-win32」· Java 代码 · 共 74 行

package de.fhm.jkf.gui;

/**
 * <br><br><center><table border="1" width="80%"><hr>
 * <strong><a href="http://jkf.sourceforge.net">The JKF Project</a></strong>
 * <p>
 * Copyright (C) 2002 by Theodor Willax
 * <p>
 * This library 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 2.1 of the License, or (at your option) any later version.
 * <p>
 * This library 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
 * Lesser General Public License for more details.
 * <p>
 * You should have received a copy of the <a href="http://www.gnu.org/copyleft/lesser.html">
 * GNU Lesser General Public License</a> along with this library; if not, write to
 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA  02111-1307  USA
 * <hr></table></center>
 * 
 * @author Marten Wulff
 * @version $Revision: 1.3 $
 */
public final class ApplicationId {
	
	private static int nextId = 0;
	
	private int id;

	public ApplicationId() {
		id = nextId++;
	}
	
	public String toString() {
		return Integer.toString(id);
	}
	
	/* (non-Javadoc)
	 * @see java.lang.Object#equals(Object)
	 */
	public boolean equals(Object other) {

		// alias check
		if (this == other) {
			return true;
		}

		// test for null, only in classes directly derived 
		// from Object
		if (other == null) {
			return false;
		}

		// at the moment there is only the class Error, that
		// represents an error. If other classes derived from
		// Error should be tested for equality, this statement
		// must be removed.
		if (other.getClass() != getClass()) {
			return false;
		}

		// Errors are equal if they occure for the same Validatable
		if (! (id == ((ApplicationId)other).id)) {
			return false;
		}

		return true;
	}
}