import java.lang.reflect.Constructor;
import java.lang.*;
/**
 * A simple example of how to build new members of classes
 * "on the fly", given only the name of the class.  Written as
 * an example for the FLIP programming team and updated for
 * the CS152 Options group.
 *
 * @author Samuel A. Rebelsky
 * @authro Wanlin Liu
 * @version 1.2 of November 1999
 */
public class Classist {
    /**
   * Given the name of a class, build an object in that class
   * using the zeroary constructor for that class.  Throws an
   * exception when one of the affiliated methods fails.
   */
  public static Object buildOne(String className, String parameter) 
    throws Exception
  {
    Class desiredClass;
    // Build the class for the given class name.
    desiredClass = Class.forName(className);
    Class[] paramType = {Class.forName("java.lang.String")};
   
    Constructor cons = desiredClass.getConstructor(paramType);
    Object[] param = {parameter};
    return cons.newInstance(param);
  } // buildOne(String)
 
    /**
     * Testing.  Build one of each of the objects specified on the
     * command line and call their toString method.
     */
    public static void main(String[] args) 
        throws Exception
    {
        Name liu = new Name("Liu", "Diana", "Wanlin"); 
        Object obj = buildOne("Name", liu.toString());
        System.out.println("liu is: " + obj.toString());
        System.out.println("A string is: " + buildOne("java.lang.String", "I am a string")); 
    } // main(String[]) 
} // class Classist