--******************************************************************************
--*                                                                            *
--*  File:        LuaJava_02.lua                        Revision:  1.0         *
--*                                                                            *
--*  Purpose:     how are LuaObjects converted into strings within Java?       *
--*                                                                            *
--*  Creation:    06.11.2004                   Last Modification:  07.11.2004  *
--*                                                                            *
--*  Platform:    IBM-compatible PC running Windows 98SE                       *
--*                                                                            *
--*  Environment: Lua 5.0, LuaJava 1.0b3, Java 1.4.2                           *
--*                                                                            *
--*  Author:      Andreas Rozek           Phone:  ++49 (7031) 222305           *
--*               Bunsenstraße 80/1       Fax:    -                            *
--*             D-71032 Böblingen         EMail:  Info@Andreas-Rozek.De        *
--*               Germany                                                      *
--*                                                                            *
--*  URL:         http://www.Andreas-Rozek.de/                                 *
--*                                                                            *
--*  Copyright:   the software is published under the "GNU Lesser General Pub- *
--*               lic  License" (see "http://www.fsf.org/copyleft/lesser.html" *
--*               for additional information)                                  *
--*                                                                            *
--*  Comments:    (none)                                                       *
--*                                                                            *
--******************************************************************************

  println();
  println("LuaJava_02 - how are LuaObjects converted into strings within Java?");
  println();

  local SystemClass = luajava.bindClass("java.lang.System");

  local function Function () end;
  local Thread = coroutine.create(Function);

  println("Output of 'println(arg,' <-> ',tostring(arg))' depending on 'arg':");
  println("  nil      -> ", nil,         " <-> ", tostring(nil));
  println("  true     -> ", true,        " <-> ", tostring(true));
  println("  false    -> ", false,       " <-> ", tostring(false));
  println("  1        -> ", 1,           " <-> ", tostring(1));
  println("  1.23     -> ", 1.23,        " <-> ", tostring(1.23));
  println("  1.23e45  -> ", 1.23e45,     " <-> ", tostring(1.23e45));
  println("  'Test'   -> ", 'Test',      " <-> ", tostring('Test'));
  println("  {1,2,3}  -> ", {1,2,3},     " <-> ", tostring({1,2,3}));
  println("  Function -> ", Function,    " <-> ", tostring(Function));
--println("  Thread   -> ", Thread  ,    " <-> ", tostring(Thread));  -- throws java.lang.NullPointerException
  println("  <class>  -> ", SystemClass, " <-> ", tostring(SystemClass));

  println();
  println("Output of 'io.stdout:write(tostring(arg))' depending on 'arg':");
  io.stdout:write("  nil      -> ", tostring(nil),         "\n");
  io.stdout:write("  true     -> ", tostring(true),        "\n");
  io.stdout:write("  false    -> ", tostring(false),       "\n");
  io.stdout:write("  1        -> ", tostring(1),           "\n");
  io.stdout:write("  1.23     -> ", tostring(1.23),        "\n");
  io.stdout:write("  1.23e45  -> ", tostring(1.23e45),     "\n");
  io.stdout:write("  'Test'   -> ", tostring('Test'),      "\n");
  io.stdout:write("  {1,2,3}  -> ", tostring({1,2,3}),     "\n");
  io.stdout:write("  Function -> ", tostring(Function),    "\n");
  io.stdout:write("  Thread   -> ", tostring(Thread),      "\n");
  io.stdout:write("  <class>  -> ", tostring(SystemClass), "\n");