pso源程序

				/**
				 * Description: provide a parent class that implement the interface Clonable
				 * and Serializable.
				 *
				 * @ Author        Create/Modi     Note
				 * Xiaofeng Xie    May 22, 2000
				 */
				
				package Global.basic;
				
				import java.io.*;
				
				public abstract class BasicObject extends Object implements Cloneable, Serializable {
				
				  public BasicObject getSelf() {
				    return this;
				  }
				}