import java.lang.Math;

public class HelloWorld
{
  public static void main(String[] args)
  {
    PrintMe o = new PrintMe();

    o.setEnum(PrintMe.SomeEnum.E1);
    System.out.println(o);

    o.setEnum(PrintMe.SomeEnum.E2);
    System.out.println(o);
  }
}


public class PrintMe
{
  // ta tvoj enum
  public enum SomeEnum { E1, E2 }

  private SomeEnum _enum;

  public void setEnum(SomeEnum e)
  {
    this._enum = e;
  }

  private String toStringZaPrviEnum()
  {
    return "E1";
  }
  private String toStringZaDrugiEnum()
  {
    return "E2";
  }

  public String toString()
  {
    String to_ret;
    switch(_enum)
    {
      case E1: to_ret = toStringZaPrviEnum(); break;
      case E2: to_ret = toStringZaDrugiEnum(); break;
      default: to_ret = "What went wrong here??";
    }

    return to_ret;
  }
}