public class MyString
{
   private String data;

   public MyString(String data)
   {
      this.data = data;
   }

   public String toString()
   {
      return data;
   }

   /** Tests if data is the same. */
   public boolean equals(MyString other)
   {
      System.err.println("debug: equals(MyString)");
      return this.data.equals(other.data);
   }

   /** Tests object identity. */
   public boolean equals(Object other)
   {
      System.err.println("debug: equals(Object)");
      return this == other;
   }
}