// Lang_29 [Thread class].nova


// The application class.
class ThreadClassApp
{
   // Application class's "main" function.
   public static void main( String[] args )
   {
      ThreadTester threadTester = new ThreadTester( );

      Thread threadIRun = new Thread( threadTester, "iRunMethodArg" );

      threadIRun.start( );

      Object returnObject = threadIRun.getReturnValue( );
      Stream.write( "return object = " );
      Stream.writeLine( returnObject.toString( ) );


      // Pause between the threads.
      Thread.sleep( 3000 );


      // Create a new thread to use the static method.
      Thread threadStaticProc = new Thread( threadProc, "staticMethodArg" );

      threadStaticProc.start( );

      returnObject = threadStaticProc.getReturnValue( );
      Stream.write( "return object = " );
      Stream.writeLine( returnObject.toString( ) );
   }


   private static Object threadProc( Object arg )
   {
      Stream.writeLine( "ThreadClass.threadProc( ) - called" );

      Stream.write( "arg = " );
      Stream.writeLine( arg.toString( ) );

      // Delay the thread.
      Thread.sleep( 3000 );

      return arg;
   }
}


class ThreadTester : IRun
{
   public Object run( Object arg )
   {
      Stream.writeLine( "ThreadTester.run( ) - called" );

      Stream.write( "arg = " );
      Stream.writeLine( arg.toString( ) );

      // Delay the thread.
      Thread.sleep( 3000 );

      return arg;
   }
}