content: package com.caucho.hessian.test;
  
  import com.caucho.hessian.io.*;
  import com.caucho.hessian.server.HessianServlet;
  import java.io.*;
  import java.util.*;
  
  /**
   * The test service is a Hessian 2.0 protocol test for developers of
   * Hessian 2.0 clients.  For a new client the recommended order is:
   *
   * <ul>
   * <li>methodNull
   * <li>methodHello
   * </ul>
   */
  public class TestHessianServlet
    extends HessianServlet
    implements Test
  {
    private ThreadLocal<CharArrayWriter> _threadWriter
      = new ThreadLocal<CharArrayWriter>();
    
    /**
     * Does nothing.
     */
    public void nullCall()
    {
    }
    
    /**
     * Hello, World.
     */
    public String hello()
    {
      return "Hello, World";
    }
    
    /**
     * Subtraction
     */
    public int subtract(int a, int b)
    {
      return a - b;
    }
    
    /**
     * Echos the object to the server.
     * <pre>
     */
    public Object echo(Object value)
    {
      return value;
    }
    
    /**
     * Throws an application fault.
     */
    public void fault()
      throws IOException
    {
      throw new NullPointerException("sample exception");
    }
  }
  